MEAN WELL KAA-4R4V-S is a KNX LED actuator and dimmer combining four 16 A relay channels at 230 VAC with four passive DC 0(1)–10 V control channels. It supports configurable switching and dimming, manual control, scenes and KNX Data Secure. This 16 A configuration is available by request, with a documented resistive-load limit of 3680 W per relay; confirm the other load limits for the ordered configuration. Product Datasheet Download MEAN WELL KAA-4R4V-S Datasheet (PDF) The KAA-4R4V-S section is on PDF pages 20, 21, 22, 23, 24, 25, 26, 27, 28, 29. Refer to the complete mechanical drawings and notes when planning installation. Model and Configuration Complete order code KAA-4R4V-S Series KAA-4R4V-S Relay channels 4 Rated current per relay 16 A Rated switching voltage 230 VAC Maximum resistive load per relay 3680 W Version 16 A per channel, available by request The relay rating applies to the switched load, not to an AC power output generated by this actuator. The actuator is powered from the KNX bus and switches an external load supply. Select the load, upstream protection and wiring for the actual application. Four independent latching relay channels and four passive DC 0(1)–10 V dimming channels support switching, dimming and mixed configurations. The dimming outputs are control interfaces for compatible LED drivers, not LED power outputs. Relay switching and dimming can be configured independently. Typical applications include building automation, lighting and blind or shutter control. KNX Data Secure, manual operation and a three-year catalogue warranty are specified. Specify the 16 A by-request configuration when ordering. Its documented resistive-load limit is 3680 W per relay at 230 VAC. Confirm the permitted simultaneous channel loading, inrush, capacitive and motor loads, ambient conditions, certifications and version-specific installation data for the supplied configuration before selecting the connected loads. Passive Dimming and Control-Output Loading Dimming channels 4 Control interface Passive DC 0(1)–10 V Dimming curve Linear or logarithmic, configured through ETS The connected LED driver must provide a control interface compatible with the passive actuator. Use matching DIM+ and DIM− polarity. A suitable 1–10 V driver can have its mains input switched by the relay while its brightness is controlled by the dimming channel. With a suitable 0–10 V driver, the relay and dimming functions can also operate independently. Confirm the control-channel current budget, cable length and number of drivers for the supplied 16 A configuration. The relay current rating does not determine the permitted dimming-control current, and it does not establish a universal LED-driver count. Manual Operation and KNX Functions Left/right buttons select the channel. A short press on the up/down button switches the selected channel on/off; a long press increases/decreases brightness. Dimming stops at the configured upper or lower level or when the button is released. The manual controls and channel LEDs are separate from the programming button and programming LED. The relay and dimming functions can be configured independently. LEDs are on for an active relay or non-zero dimming level and off for an inactive relay or zero dimming level. Fast flashing identifies an active selected channel in manual control; slow flashing identifies a selected inactive channel. Use the manufacturer’s application database for the exact 10 A or 16 A device. ETS Communication Objects and Automation The central objects provide manual enable, ON/OFF switching, absolute dimming and operation status. Channel objects provide switching and switch-state feedback, an additional relay switch and its state, relative dimming, absolute dimming, brightness feedback, scenes, four automatic switch functions, two blocking functions and staircase-light control. Switching, enables and alarms use 1-bit objects; relative dimming uses 4 bits; absolute dimming and brightness state use a 1-byte percentage; scenes use 1-byte scene-number/control objects. The timed staircase-light object uses 2 bytes for 0–65535 seconds, with separate prewarning and permanent-ON functions. The catalogue object table starts channel 1 at object 5, channel 2 at 23, channel 3 at 41 and channel 4 at 59. Its displayed priority is Low; flags and priorities can be adjusted in ETS. C means communication, R read, W write, T transmit and U update. Use the installed application version for the final object list and assignments. Secure Commissioning Obtain the matching application database from the manufacturer or the ETS online catalogue and check its firmware compatibility. Connect the KNX bus with the indicated KNX+ and KNX− polarity. Assign the physical address with the programming button, load the channel parameters and test each configured function. The attached device certificate is required for initial KNX Data Secure configuration. Keep it securely with the project records after commissioning; the manufacturer recommends removing it from the device once configuration is complete. Data Secure must be configured in the ETS project and is not a substitute for correct bus installation. The instruction manual specifies ETS 5.5.0 or later for KNX Data Secure. Secure commissioning uses a project password and the device-specific FDSK to establish the tool and runtime keys. Omitting the project password leaves secure mode inactive; back up the project and keys for future service. Mechanical Installation and Connections Catalogue enclosure dimensions 72 × 90 × 57 mm (W × H × D) Dimensional tolerance ±1 mm Mounting Four modular units on a 35 mm DIN rail; TS35/7.5 or TS35/15 The upper terminal row provides relay pairs A–D; the lower row provides the four separate dimming pairs, each marked − and +, plus the separate KNX bus connector. Match the numbered control channel to the intended driver and observe both dimming and KNX polarity. Do not apply mains voltage to dimming or KNX terminals. For motor operation, configure the paired relay channels for shutters/blinds and follow the motor installation manual. The protective-earth conductor shown for the motor belongs to the load circuit; it is not a KNX or dimming return. The wiring guidance specifies 0.5–4.0 mm² solid or 0.5–2.5 mm² stranded conductors for relay and dimming terminals. Use solid KNX bus conductors and observe the connector’s marked size. Confirm tightening torque and preparation against the installation instructions supplied with the exact device version before wiring. Compatible Equipment and Ordering A suitable KNX bus supply, commissioning interface and compatible LED drivers are selected for the system. The official instruction manual names MEAN WELL KSI-01U as an example KNX USB interface for connecting ETS to the bus. It is separate commissioning equipment, not a power source or an included dimming accessory. Confirm the 16 A by-request configuration and its detailed connected-load limits with the order. Select LED drivers with a compatible passive DC 0(1)–10 V control interface; the number of drivers must be checked for both relay switching and dimming control.

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MEAN WELL KAA-4R4V-10S is a KNX LED actuator and dimmer combining four 10 A relay channels at 230 VAC with four passive DC 0(1)–10 V control channels. It supports configurable switching and dimming, manual control, scenes and KNX Data Secure. Relay switching capacity and dimming-control capacity are separate limits; select the connected driver type and quantity accordingly. Product Datasheet Download MEAN WELL KAA-4R4V-S Datasheet (PDF) The KAA-4R4V-S section is on PDF pages 20, 21, 22, 23, 24, 25, 26, 27, 28, 29. Refer to the complete mechanical drawings and notes when planning installation. Model and Configuration Complete order code KAA-4R4V-10S Series KAA-4R4V-S Relay channels 4 Rated current per relay 10 A Rated switching voltage 230 VAC Maximum resistive load per relay 2300 W Version 10 A per channel, standard configuration The relay rating applies to the switched load, not to an AC power output generated by this actuator. The actuator is powered from the KNX bus and switches an external load supply. Select the load, upstream protection and wiring for the actual application. Four independent latching relay channels and four passive DC 0(1)–10 V dimming channels support switching, dimming and mixed configurations. The dimming outputs are control interfaces for compatible LED drivers, not LED power outputs. Relay switching and dimming can be configured independently. Typical applications include building automation, lighting and blind or shutter control. KNX Data Secure, manual operation and a three-year catalogue warranty are specified. Bus Supply and Relay Electrical Limits KNX bus voltage 21–31 VDC KNX bus current <14 mA KNX bus consumption <250 mW Maximum total relay current 40 A Maximum capacitive load 220 µF per channel Maximum inrush current 400 A for 200 µs; 80 A for 20 ms AC1 load at cos θ = 0.8 10 A AC5a load at cos θ = 0.45 8 A AC5b incandescent-lamp load 10 A The 10 A rating is per relay and the 40 A total limit also applies across the device. Per-channel maxima are not unrestricted simultaneous ratings. The high short-duration inrush figures are relay switching capabilities, not continuous load-current allowances. The electronics require no additional auxiliary power supply beyond the KNX bus. Unless stated otherwise, catalogue specifications are measured at 230 VAC, rated load and 25°C ambient. Relay Service Life Mechanical endurance More than 1,000,000 operations EN 60669-1 §19.1 electrical endurance 40,000 operations EN 60669-1 §19.2 AX capacitive-load endurance 10,000 operations Electrical life depends on the specified load category and test conditions. The catalogue identifies the EN 60669 test results with its notified-body test-report note; these are not unconditional service-life guarantees for arbitrary loads. Passive Dimming and Control-Output Loading Dimming channels 4 Control interface Passive DC 0(1)–10 V Dimming curve Linear or logarithmic, configured through ETS Maximum current per dimming channel 50 mA, passive Maximum control-cable length 100 m using 1.5 mm² cable at full load The connected LED driver must provide a control interface compatible with the passive actuator. Use matching DIM+ and DIM− polarity. A suitable 1–10 V driver can have its mains input switched by the relay while its brightness is controlled by the dimming channel. With a suitable 0–10 V driver, the relay and dimming functions can also operate independently. The control-output example allows up to 500 drivers on one dimming channel only when each driver sources 0.1 mA. This equals the 50 mA control-channel limit; actual capacity also depends on cable length and the application. This is not permission to switch 500 driver mains inputs with one relay. Observe the separate relay-driver counts below. Maximum Connected Load per Relay Resistive load or heater 2300 W Incandescent lamps 2300 W 230 V halogen lamps 2300 W Halogen lamps with electronic transformer 1300 W Uncompensated fluorescent lamps 2000 W Parallel-compensated fluorescent lamps 1200 W Maximum electronic-transformer count 15 Shutter motor 600 W Apply the actual load-category rating, relay inrush limit and device total-current limit together. For shutters and blinds, follow the motor manufacturer’s wiring and interlock requirements. MEAN WELL LED-Driver Switching Counts at 230 V Maximum 3 drivers per relay HLG-600H Maximum 4 drivers per relay HVG-320, HVGC-320 Maximum 5 drivers per relay LPC-150, HLG-240H, HVG-240, HVGC-240 Maximum 6 drivers per relay HLG-320H, HLG-320H-C Maximum 7 drivers per relay LPC-100, LPF-90, LPF-90D, LPV-100, HLN-80H, HLP-40H, HLP-80H, HBG-240, HLG-80H, HLG-240H-C Maximum 8 drivers per relay LPC-60, LPV-60, LPV-150, NPF-90, NPF-120, NPF-90D, NPF-120D, PWM-90, PWM-120, CLG-150, ELG-100, ELG-150, ELG-150-C, HBG-100, HBG-160, HLG-100H, HLG-120H, HLG-150H, HLG-185H, HLG-60H-C, HLG-80H-C, HVG-100, HVG-150, HVGC-100, HVGC-150 Maximum 9 drivers per relay LPC-35, LPF-60, LPF-60D, LPV-35, HLN-60H, HLP-60H, HLG-60H, HLG-185H-C, HSG-70 Maximum 10 drivers per relay NPF-40, NPF-60, NPF-40D, NPF-60D, PWM-40, PWM-60, HLN-40H, ELG-75, ELG-75-C, HLG-120H-C Maximum 11 drivers per relay APC-12, APC-25, APC-35, APV-12, APV-25, APV-35, LPC-20, LPV-20 Maximum 13 drivers per relay PLC-100, PLN-100, CLG-100, ELG-100-C Maximum 15 drivers per relay APC-16E, APV-16E Maximum 16 drivers per relay LPF-25, LPF-40, LPF-25D, LPF-40D, LPH-18, LPHC-18, HLG-40H Maximum 18 drivers per relay APC-16, APC-12E, APV-16, APV-12E, LPF-16, LPF-16D, HBG-60 Maximum 20 drivers per relay HVG-65, HVGC-65 Maximum 22 drivers per relay APC-8, APC-8E, APV-8, APV-8E, CEN-60, CEN-75, CEN-100 Maximum 23 drivers per relay PLC-30, PLC-45, PLC-60, PLN-20, PLN-30, PLN-45, PLN-60, PLP-60, CLG-60 Maximum 25 drivers per relay LCM-25, LCM-40, LCM-60, LCM-25DA, LCM-40DA, LCM-60DA Maximum 26 drivers per relay PCD-60B Maximum 27 drivers per relay PLP-45 Maximum 32 drivers per relay PLD-25, PLD-40B, PLD-60B, PLP-30 Maximum 40 drivers per relay PLD-16B Maximum 45 drivers per relay PCD-40B Maximum 53 drivers per relay PCD-25B, PLM-12, PLM-25, PLM-40 Maximum 80 drivers per relay PCD-16B Each group below gives the catalogue maximum quantity of any one listed driver reference on one relay channel at 230 V. It is not a combined allowance for every driver in that group. Mixed loads require their combined steady-state and inrush loading to remain within the actuator limits. These references establish switched-input loading. They do not imply that every listed driver has a dimming input. For dimming, choose the actual driver version with a compatible DC 0(1)–10 V interface; for a non-dimmable driver, use relay ON/OFF control only. Confirm the full driver order code and installation conditions when selecting equipment. Manual Operation and KNX Functions Left/right buttons select the channel. A short press on the up/down button switches the selected channel on/off; a long press increases/decreases brightness. Dimming stops at the configured upper or lower level or when the button is released. The manual controls and channel LEDs are separate from the programming button and programming LED. The relay and dimming functions can be configured independently. LEDs are on for an active relay or non-zero dimming level and off for an inactive relay or zero dimming level. Fast flashing identifies an active selected channel in manual control; slow flashing identifies a selected inactive channel. Use the manufacturer’s application database for the exact 10 A or 16 A device. ETS Communication Objects and Automation The central objects provide manual enable, ON/OFF switching, absolute dimming and operation status. Channel objects provide switching and switch-state feedback, an additional relay switch and its state, relative dimming, absolute dimming, brightness feedback, scenes, four automatic switch functions, two blocking functions and staircase-light control. Switching, enables and alarms use 1-bit objects; relative dimming uses 4 bits; absolute dimming and brightness state use a 1-byte percentage; scenes use 1-byte scene-number/control objects. The timed staircase-light object uses 2 bytes for 0–65535 seconds, with separate prewarning and permanent-ON functions. The catalogue object table starts channel 1 at object 5, channel 2 at 23, channel 3 at 41 and channel 4 at 59. Its displayed priority is Low; flags and priorities can be adjusted in ETS. C means communication, R read, W write, T transmit and U update. Use the installed application version for the final object list and assignments. Secure Commissioning Obtain the matching application database from the manufacturer or the ETS online catalogue and check its firmware compatibility. Connect the KNX bus with the indicated KNX+ and KNX− polarity. Assign the physical address with the programming button, load the channel parameters and test each configured function. The attached device certificate is required for initial KNX Data Secure configuration. Keep it securely with the project records after commissioning; the manufacturer recommends removing it from the device once configuration is complete. Data Secure must be configured in the ETS project and is not a substitute for correct bus installation. The instruction manual specifies ETS 5.5.0 or later for KNX Data Secure. Secure commissioning uses a project password and the device-specific FDSK to establish the tool and runtime keys. Omitting the project password leaves secure mode inactive; back up the project and keys for future service. Environment, Insulation and Compliance Working ambient temperature −30 to +45°C, environmental class 3K5 Storage temperature −35 to +70°C Relative humidity 10–95% RH, non-condensing Protection class Class II according to EN 61140 Overvoltage category / pollution degree Category III / degree 2 according to EN 60664-1 Enclosure protection IP20 according to EN 60529 Withstand voltage 3.5 kVAC between switching output and SELV MTBF reference 686.9K hours minimum, Telcordia SR-332; 302.3K hours minimum, MIL-HDBK-217F at 25°C Safety standards are BS EN/EN 50491-3, BS EN/EN 60669-1, BS EN/EN 60669-2-1 and BS EN/EN 60669-2-5, with the catalogue’s notified-body test-report qualification; EAC TP TC 004 approval is listed. EMC emission and immunity compliance is stated to BS EN/EN 50491-5-1/-5-2/-5-3, BS EN/EN 50090-2-2, BS EN/EN 60669-2-1/-2-5 and BS EN/EN 63044-5-1/-5-2/-5-3, with the stated test-report qualification; EAC TP TC 020 is listed. Match the supplied device’s declarations to the intended installation. Install in an appropriate distribution enclosure and provide external circuit protection for the connected loads. The relay ratings do not establish electronic short-circuit or overload protection, and no automatic fault-recovery mechanism is specified here. Mechanical Installation and Connections Catalogue enclosure dimensions 72 × 90 × 57 mm (W × H × D) Dimensional tolerance ±1 mm Mounting Four modular units on a 35 mm DIN rail; TS35/7.5 or TS35/15 The upper terminal row provides relay pairs A–D; the lower row provides the four separate dimming pairs, each marked − and +, plus the separate KNX bus connector. Match the numbered control channel to the intended driver and observe both dimming and KNX polarity. Do not apply mains voltage to dimming or KNX terminals. For motor operation, configure the paired relay channels for shutters/blinds and follow the motor installation manual. The protective-earth conductor shown for the motor belongs to the load circuit; it is not a KNX or dimming return. The wiring guidance specifies 0.5–4.0 mm² solid or 0.5–2.5 mm² stranded conductors for relay and dimming terminals. Use solid KNX bus conductors and observe the connector’s marked size. Confirm tightening torque and preparation against the installation instructions supplied with the exact device version before wiring. Compatible Equipment and Ordering A suitable KNX bus supply, commissioning interface and compatible LED drivers are selected for the system. The official instruction manual names MEAN WELL KSI-01U as an example KNX USB interface for connecting ETS to the bus. It is separate commissioning equipment, not a power source or an included dimming accessory. The listed MEAN WELL LED-driver references are load-selection examples with model-specific limits, not supplied accessories. Check the driver’s full order code and load characteristics before connection. Catalogue Weight Reference Catalogue unit weight 247 g This is the catalogue packing reference per unit, not a measured net or shipping weight. Allow separately for installation items and the finished shipment.

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MEAN WELL KAA-8R-10S is a KNX universal switch actuator with eight independent latching relay channels, rated 10 A per relay at 230 VAC. It supports lighting and heating loads or four paired shutter/blind outputs, manual operation and KNX Data Secure. The device total-current limit and load-specific switching limits must also be observed. Product Datasheet Download MEAN WELL KAA-8R-S Datasheet (PDF) The KAA-8R-S section is on PDF pages 12, 13, 14, 15, 16, 17, 18, 19. Refer to the complete mechanical drawings and notes when planning installation. Model and Configuration Complete order code KAA-8R-10S Series KAA-8R-S Relay channels 8 Rated current per relay 10 A Rated switching voltage 230 VAC Maximum resistive load per relay 2300 W Version 10 A per channel, standard configuration Safety-model identification KAA-8R-10S The relay rating applies to the switched load, not to an AC power output generated by this actuator. The actuator is powered from the KNX bus and switches an external load supply. Select the load, upstream protection and wiring for the actual application. Eight independent potential-free bistable latching relay channels can be configured for lighting or heating, or paired for up to four shutter/blind outputs. Shutter outputs use the relay channels; they are not additional independent power channels. Typical applications include building automation, lighting and blind or shutter control. KNX Data Secure, manual operation and a three-year catalogue warranty are specified. Bus Supply and Relay Electrical Limits KNX bus voltage 21–31 VDC KNX bus current <10 mA KNX bus consumption <180 mW Switching supply frequency 50 Hz Maximum total relay current 56 A Maximum capacitive load 220 µF per channel Maximum inrush current 400 A for 200 µs; 80 A for 20 ms AC1 load at cos θ = 0.8 10 A AC5a load at cos θ = 0.45 8 A AC5b incandescent-lamp load 10 A AC3 load at cos θ = 0.45 5 A The 10 A rating is per relay and the 56 A total limit also applies across the device. Per-channel maxima are not unrestricted simultaneous ratings. The high short-duration inrush figures are relay switching capabilities, not continuous load-current allowances. The electronics require no additional auxiliary power supply beyond the KNX bus. Unless stated otherwise, catalogue specifications are measured at 230 VAC, rated load and 25°C ambient. Relay Service Life Mechanical endurance More than 1,000,000 operations EN 60669-1 §19.1 electrical endurance 40,000 operations EN 60669-1 §19.2 AX capacitive-load endurance 10,000 operations Electrical life depends on the specified load category and test conditions. The catalogue identifies the EN 60669 test results with its notified-body test-report note; these are not unconditional service-life guarantees for arbitrary loads. Maximum Connected Load per Relay Resistive load or heater 2300 W Incandescent lamps 2300 W 230 V halogen lamps 2300 W Halogen lamps with electronic transformer 1300 W Uncompensated fluorescent lamps 2000 W Parallel-compensated fluorescent lamps 1200 W Maximum electronic-transformer count 15 Shutter motor 600 W Apply the actual load-category rating, relay inrush limit and device total-current limit together. For shutters and blinds, follow the motor manufacturer’s wiring and interlock requirements. MEAN WELL LED-Driver Switching Counts at 230 V Maximum 3 drivers per relay HLG-600H Maximum 4 drivers per relay HVG-320, HVGC-320 Maximum 5 drivers per relay LPC-150, HLG-240H, HVG-240, HVGC-240 Maximum 6 drivers per relay HLG-320H, HLG-320H-C Maximum 7 drivers per relay LPC-100, LPF-90, LPF-90D, LPV-100, HLN-80H, HLP-40H, HLP-80H, HBG-240, HLG-80H, HLG-240H-C Maximum 8 drivers per relay LPC-60, LPV-60, LPV-150, NPF-90, NPF-120, NPF-90D, NPF-120D, PWM-90, PWM-120, CLG-150, ELG-100, ELG-150, ELG-150-C, HBG-100, HBG-160, HLG-100H, HLG-120H, HLG-150H, HLG-185H, HLG-60H-C, HLG-80H-C, HVG-100, HVG-150, HVGC-100, HVGC-150 Maximum 9 drivers per relay LPC-35, LPF-60, LPF-60D, LPV-35, HLN-60H, HLP-60H, HLG-60H, HLG-185H-C, HSG-70 Maximum 10 drivers per relay NPF-40, NPF-60, NPF-40D, NPF-60D, PWM-40, PWM-60, HLN-40H, ELG-75, ELG-75-C, HLG-120H-C Maximum 11 drivers per relay APC-12, APC-25, APC-35, APV-12, APV-25, APV-35, LPC-20, LPV-20 Maximum 13 drivers per relay PLC-100, PLN-100, CLG-100, ELG-100-C Maximum 15 drivers per relay APC-16E, APV-16E Maximum 16 drivers per relay LPF-25, LPF-40, LPF-25D, LPF-40D, LPH-18, LPHC-18, HLG-40H Maximum 18 drivers per relay APC-16, APC-12E, APV-16, APV-12E, LPF-16, LPF-16D, HBG-60 Maximum 20 drivers per relay HVG-65, HVGC-65 Maximum 22 drivers per relay APC-8, APC-8E, APV-8, APV-8E, CEN-60, CEN-75, CEN-100 Maximum 23 drivers per relay PLC-30, PLC-45, PLC-60, PLN-20, PLN-30, PLN-45, PLN-60, PLP-60, CLG-60 Maximum 25 drivers per relay LCM-25, LCM-40, LCM-60, LCM-25DA, LCM-40DA, LCM-60DA Maximum 26 drivers per relay PCD-60B Maximum 27 drivers per relay PLP-45 Maximum 32 drivers per relay PLD-25, PLD-40B, PLD-60B, PLP-30 Maximum 40 drivers per relay PLD-16B Maximum 45 drivers per relay PCD-40B Maximum 53 drivers per relay PCD-25B, PLM-12, PLM-25, PLM-40 Maximum 80 drivers per relay PCD-16B Each group below gives the catalogue maximum quantity of any one listed driver reference on one relay channel at 230 V. It is not a combined allowance for every driver in that group. Mixed loads require their combined steady-state and inrush loading to remain within the actuator limits. These references establish switched-input loading. They do not imply that every listed driver has a dimming input. For dimming, choose the actual driver version with a compatible DC 0(1)–10 V interface; for a non-dimmable driver, use relay ON/OFF control only. Confirm the full driver order code and installation conditions when selecting equipment. Manual Operation and KNX Functions The front-panel buttons select channels and manually switch their outputs, while channel LEDs show status. A separate programming button and programming LED are used when assigning the KNX individual address. Scenes and time functions are configurable in the ETS application. Use the manufacturer’s matching ETS database and firmware for the selected actuator. The catalogue specifies ETS 5.0 configuration; secure commissioning additionally requires a KNX Secure-capable ETS version and the product’s device certificate. Secure Commissioning Obtain the matching application database from the manufacturer or the ETS online catalogue and check its firmware compatibility. Connect the KNX bus with the indicated KNX+ and KNX− polarity. Assign the physical address with the programming button, load the channel parameters and test each configured function. The attached device certificate is required for initial KNX Data Secure configuration. Keep it securely with the project records after commissioning; the manufacturer recommends removing it from the device once configuration is complete. Data Secure must be configured in the ETS project and is not a substitute for correct bus installation. Use the appropriate KNX Secure-capable ETS application and certificate for this exact device. Follow the installation and commissioning manual when enabling secure communication. Environment, Insulation and Compliance Working ambient temperature −30 to +45°C, environmental class 3K5 Storage temperature −35 to +70°C Relative humidity 10–95% RH, non-condensing Protection class Class II according to EN 61140 Overvoltage category / pollution degree Category III / degree 2 according to EN 60664-1 Enclosure protection IP20 according to EN 60529 Withstand voltage 3.5 kVAC between switching output and SELV MTBF reference 597.8K hours minimum, Telcordia SR-332; 447.9K hours minimum, MIL-HDBK-217F at 25°C Safety standards are BS EN/EN 50491-3, BS EN/EN 60669-1, BS EN/EN 60669-2-1 and BS EN/EN 60669-2-5, with the catalogue’s notified-body test-report qualification; EAC TP TC 004 approval is listed. EMC emission and immunity compliance is stated to BS EN/EN 50491-5-1/-5-2/-5-3, BS EN/EN 50090-2-2, BS EN/EN 60669-2-1/-2-5 and BS EN/EN 63044-5-1/-5-2/-5-3, with the stated test-report qualification; EAC TP TC 020 is listed. Match the supplied device’s declarations to the intended installation. Install in an appropriate distribution enclosure and provide external circuit protection for the connected loads. The relay ratings do not establish electronic short-circuit or overload protection, and no automatic fault-recovery mechanism is specified here. Mechanical Installation and Connections Catalogue enclosure dimensions 72 × 90 × 57 mm (W × H × D) Dimensional tolerance ±1 mm Mounting Four modular units on a 35 mm DIN rail; TS35/7.5 or TS35/15 The upper and lower terminal rows provide the eight independent relay contact pairs A–H. The KNX connector is separate and marked − and +. In the lighting and heater examples, the relay switches the external line conductor and the load neutral runs directly to neutral. Do not apply mains voltage to the KNX terminals. For motor operation, configure the paired relay channels for shutters/blinds and follow the motor installation manual. The protective-earth conductor shown for the motor belongs to the load circuit; it is not a KNX or dimming return. Use 0.5–4.0 mm² solid or 0.5–2.5 mm² finely stranded wire at the screw terminals. The KNX bus terminal accepts 0.8 mm diameter solid conductors. The catalogue recommends a slotted screwdriver 2.5 × 0.4 to 3.5 × 0.6 mm and 0.8 Nm tightening torque. Follow the supplied installation instructions and terminal markings. Compatible Equipment and Ordering The actuator is supplied from a suitable KNX bus system. Select its bus power supply and commissioning interface separately; a dimmable driver is not required for relay ON/OFF switching. DIN rail, distribution enclosure, load wiring, protective devices and connected loads must be selected for the installation. The listed MEAN WELL LED-driver references are load-selection examples with model-specific limits, not supplied accessories. Check the driver’s full order code and load characteristics before connection. Catalogue Weight Reference Catalogue unit weight 312 g This is the catalogue packing reference per unit, not a measured net or shipping weight. Allow separately for installation items and the finished shipment.

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MEAN WELL KAA-8R-16S is a KNX universal switch actuator with eight independent latching relay channels, rated 16 A per relay at 230 VAC. It supports lighting and heating loads or four paired shutter/blind outputs, manual operation and KNX Data Secure. The device total-current limit and load-specific switching limits must also be observed. Product Datasheet Download MEAN WELL KAA-8R-S Datasheet (PDF) The KAA-8R-S section is on PDF pages 12, 13, 14, 15, 16, 17, 18, 19. Refer to the complete mechanical drawings and notes when planning installation. Model and Configuration Complete order code KAA-8R-16S Series KAA-8R-S Relay channels 8 Rated current per relay 16 A Rated switching voltage 230 VAC Maximum resistive load per relay 3680 W Version 16 A per channel, standard configuration Safety-model identification KAA-8R-S The relay rating applies to the switched load, not to an AC power output generated by this actuator. The actuator is powered from the KNX bus and switches an external load supply. Select the load, upstream protection and wiring for the actual application. Eight independent potential-free bistable latching relay channels can be configured for lighting or heating, or paired for up to four shutter/blind outputs. Shutter outputs use the relay channels; they are not additional independent power channels. Typical applications include building automation, lighting and blind or shutter control. KNX Data Secure, manual operation and a three-year catalogue warranty are specified. Bus Supply and Relay Electrical Limits KNX bus voltage 21–31 VDC KNX bus current <10 mA KNX bus consumption <180 mW Switching supply frequency 50 Hz Maximum total relay current 80 A Maximum capacitive load 220 µF per channel Maximum inrush current 800 A for 200 µs; 165 A for 20 ms AC1 load at cos θ = 0.8 16 A AC5a load at cos θ = 0.45 8 A AC5b incandescent-lamp load 16 A AC3 load at cos θ = 0.45 8 A The 16 A rating is per relay and the 80 A total limit also applies across the device. Per-channel maxima are not unrestricted simultaneous ratings. The high short-duration inrush figures are relay switching capabilities, not continuous load-current allowances. The electronics require no additional auxiliary power supply beyond the KNX bus. Unless stated otherwise, catalogue specifications are measured at 230 VAC, rated load and 25°C ambient. Relay Service Life Mechanical endurance More than 1,000,000 operations EN 60669-1 §19.1 electrical endurance 10,000 operations EN 60669-1 §19.2 AX capacitive-load endurance 10,000 operations Electrical life depends on the specified load category and test conditions. The catalogue identifies the EN 60669 test results with its notified-body test-report note; these are not unconditional service-life guarantees for arbitrary loads. Maximum Connected Load per Relay Resistive load or heater 3680 W Incandescent lamps 2300 W 230 V halogen lamps 2300 W Halogen lamps with electronic transformer 1300 W Uncompensated fluorescent lamps 2000 W Parallel-compensated fluorescent lamps 1200 W Maximum electronic-transformer count 15 Shutter motor 600 W Apply the actual load-category rating, relay inrush limit and device total-current limit together. For shutters and blinds, follow the motor manufacturer’s wiring and interlock requirements. MEAN WELL LED-Driver Switching Counts at 230 V Maximum 4 drivers per relay HLG-600H, HVG-320, HVGC-320 Maximum 5 drivers per relay HVG-240, HVGC-240 Maximum 7 drivers per relay LPC-100, LPF-90, LPF-90D, LPV-100, HLN-80H, HLP-40H, HLP-80H, HBG-240, HLG-80H, HLG-240H, HLG-320H, HLG-240H-C, HLG-320H-C Maximum 8 drivers per relay LPC-60, LPV-60, LPV-150, NPF-90, NPF-120, NPF-90D, NPF-120D, PWM-90, PWM-120, CLG-150, ELG-100, ELG-150, ELG-150-C, HBG-100, HBG-160, HLG-100H, HLG-120H, HLG-150H, HLG-185H, HLG-60H-C, HLG-80H-C, HVG-100, HVG-150, HVGC-100, HVGC-150 Maximum 9 drivers per relay LPC-35, LPF-60, LPF-60D, LPV-35, HLN-60H, HLP-60H, HLG-60H, HLG-185H-C, HSG-70 Maximum 10 drivers per relay NPF-40, NPF-60, NPF-40D, NPF-60D, PWM-40, PWM-60, HLN-40H, ELG-75, ELG-75-C, HLG-120H-C Maximum 11 drivers per relay APC-12, APC-25, APC-35, APV-12, APV-25, APV-35, LPC-20, LPV-20 Maximum 13 drivers per relay LPC-150, PLC-100, PLN-100, CLG-100, ELG-100-C Maximum 15 drivers per relay APC-16E, APV-16E Maximum 16 drivers per relay LPF-25, LPF-40, LPF-25D, LPF-40D, LPH-18, LPHC-18, HLG-40H Maximum 18 drivers per relay APC-16, APC-12E, APV-16, APV-12E, LPF-16, LPF-16D, HBG-60 Maximum 20 drivers per relay HVG-65, HVGC-65 Maximum 22 drivers per relay APC-8, APC-8E, APV-8, APV-8E, CEN-60, CEN-75, CEN-100 Maximum 23 drivers per relay PLC-30, PLC-45, PLC-60, PLN-20, PLN-30, PLN-45, PLN-60, PLP-60, CLG-60 Maximum 25 drivers per relay LCM-25, LCM-40, LCM-60, LCM-25DA, LCM-40DA, LCM-60DA Maximum 26 drivers per relay PCD-60B Maximum 27 drivers per relay PLP-45 Maximum 32 drivers per relay PLD-25, PLD-40B, PLD-60B, PLP-30 Maximum 40 drivers per relay PLD-16B Maximum 45 drivers per relay PCD-40B Maximum 53 drivers per relay PCD-25B, PLM-12, PLM-25, PLM-40 Maximum 80 drivers per relay PCD-16B Each group below gives the catalogue maximum quantity of any one listed driver reference on one relay channel at 230 V. It is not a combined allowance for every driver in that group. Mixed loads require their combined steady-state and inrush loading to remain within the actuator limits. These references establish switched-input loading. They do not imply that every listed driver has a dimming input. For dimming, choose the actual driver version with a compatible DC 0(1)–10 V interface; for a non-dimmable driver, use relay ON/OFF control only. Confirm the full driver order code and installation conditions when selecting equipment. Manual Operation and KNX Functions The front-panel buttons select channels and manually switch their outputs, while channel LEDs show status. A separate programming button and programming LED are used when assigning the KNX individual address. Scenes and time functions are configurable in the ETS application. Use the manufacturer’s matching ETS database and firmware for the selected actuator. The catalogue specifies ETS 5.0 configuration; secure commissioning additionally requires a KNX Secure-capable ETS version and the product’s device certificate. Secure Commissioning Obtain the matching application database from the manufacturer or the ETS online catalogue and check its firmware compatibility. Connect the KNX bus with the indicated KNX+ and KNX− polarity. Assign the physical address with the programming button, load the channel parameters and test each configured function. The attached device certificate is required for initial KNX Data Secure configuration. Keep it securely with the project records after commissioning; the manufacturer recommends removing it from the device once configuration is complete. Data Secure must be configured in the ETS project and is not a substitute for correct bus installation. Use the appropriate KNX Secure-capable ETS application and certificate for this exact device. Follow the installation and commissioning manual when enabling secure communication. Environment, Insulation and Compliance Working ambient temperature −30 to +45°C, environmental class 3K5 Storage temperature −35 to +70°C Relative humidity 10–95% RH, non-condensing Protection class Class II according to EN 61140 Overvoltage category / pollution degree Category III / degree 2 according to EN 60664-1 Enclosure protection IP20 according to EN 60529 Withstand voltage 3.5 kVAC between switching output and SELV MTBF reference 597.8K hours minimum, Telcordia SR-332; 447.9K hours minimum, MIL-HDBK-217F at 25°C Safety standards are BS EN/EN 50491-3, BS EN/EN 60669-1, BS EN/EN 60669-2-1 and BS EN/EN 60669-2-5, with the catalogue’s notified-body test-report qualification; EAC TP TC 004 approval is listed. EMC emission and immunity compliance is stated to BS EN/EN 50491-5-1/-5-2/-5-3, BS EN/EN 50090-2-2, BS EN/EN 60669-2-1/-2-5 and BS EN/EN 63044-5-1/-5-2/-5-3, with the stated test-report qualification; EAC TP TC 020 is listed. Match the supplied device’s declarations to the intended installation. Install in an appropriate distribution enclosure and provide external circuit protection for the connected loads. The relay ratings do not establish electronic short-circuit or overload protection, and no automatic fault-recovery mechanism is specified here. Mechanical Installation and Connections Catalogue enclosure dimensions 72 × 90 × 57 mm (W × H × D) Dimensional tolerance ±1 mm Mounting Four modular units on a 35 mm DIN rail; TS35/7.5 or TS35/15 The upper and lower terminal rows provide the eight independent relay contact pairs A–H. The KNX connector is separate and marked − and +. In the lighting and heater examples, the relay switches the external line conductor and the load neutral runs directly to neutral. Do not apply mains voltage to the KNX terminals. For motor operation, configure the paired relay channels for shutters/blinds and follow the motor installation manual. The protective-earth conductor shown for the motor belongs to the load circuit; it is not a KNX or dimming return. Use 0.5–4.0 mm² solid or 0.5–2.5 mm² finely stranded wire at the screw terminals. The KNX bus terminal accepts 0.8 mm diameter solid conductors. The catalogue recommends a slotted screwdriver 2.5 × 0.4 to 3.5 × 0.6 mm and 0.8 Nm tightening torque. Follow the supplied installation instructions and terminal markings. Compatible Equipment and Ordering The actuator is supplied from a suitable KNX bus system. Select its bus power supply and commissioning interface separately; a dimmable driver is not required for relay ON/OFF switching. DIN rail, distribution enclosure, load wiring, protective devices and connected loads must be selected for the installation. The listed MEAN WELL LED-driver references are load-selection examples with model-specific limits, not supplied accessories. Check the driver’s full order code and load characteristics before connection. Catalogue Weight Reference Catalogue unit weight 312 g This is the catalogue packing reference per unit, not a measured net or shipping weight. Allow separately for installation items and the finished shipment.

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The MEAN WELL KNX-40E-1280D is a 30 V KNX DIN rail bus power supply with ETS diagnostics, with an integrated choke and a separate unchoked auxiliary output. Both outputs share a 1280 mA / 38.4 W rating. It accepts 180–264 VAC, uses free-air convection cooling and supports up to 256 bus devices within the current and wiring limits. Product Datasheet Download MEAN WELL KNX-40E Datasheet (PDF) The KNX-40E section is on PDF pages 5, 6, 7, 8, 9, 10, 11. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model KNX-40E-1280D Series KNX-40E Version D: diagnostic version with ETS communication objects Bus output voltage with choke 30 V Auxiliary output voltage without choke 30 V Rated combined output current 1280 mA Rated output power 38.4 W Maximum ripple and noise before the choke 100 mVp-p Short-circuit current 2.8 A The integrated choke supplies the KNX bus, while the separate 30 V auxiliary output is unchoked. Both connections share one 1280 mA / 38.4 W output budget: I1 + I2 must not exceed 1280 mA. The auxiliary output is not an additional 1280 mA supply. Connect the bus only to the choked KNX output. Use the auxiliary output when a connected KNX device requires a separate auxiliary supply, and include that consumption in the combined current budget. The blank suffix identifies the basic version; suffix D identifies the diagnostic version. Select the complete suffix required for the installation. Input, Timing and Electrical Performance AC input voltage range 180–264 VAC DC input voltage range 176–280 VDC Input frequency 47–63 Hz Typical efficiency before the choke 86% Typical AC input current 0.5 A at 230 VAC Typical cold-start inrush current 60 A at 230 VAC Leakage current Less than 1 mA at 240 VAC Set-up / rise time at full load 1000 / 50 ms at 230 VAC Typical AC-failure backup time at full load 200 ms at 230 VAC Unless otherwise specified, measurements use 230 VAC input, rated load and 25°C ambient. Ripple and noise are measured before the choke at 20 MHz bandwidth with a 12-inch twisted pair terminated in parallel 0.1 µF and 47 µF capacitors. The inrush pulse width is typically 1200 µs, measured at 50% of the peak inrush current. The unit includes one integrated choke and a switching-frequency reference of 100 kHz. Protection and Bus Reset Short-circuit / overload response Constant-current limiting; automatic recovery after the fault is removed Overload threshold 205–235% of rated output power Overvoltage threshold 33–35 V Overvoltage recovery Hiccup mode; automatic recovery after the fault is removed Bus reset operation Press the reset button once; the automatic bus reset lasts 20 seconds The red reset indicator illuminates during a bus restart. Reset interrupts the bus supply for the restart procedure; plan the reset around the connected building-control functions. Status Indicators A — bus-voltage indicator Steady green: 28–31 V; steady red: below 28 V; steady orange: above 31 V B — output-current indicator Steady green: below 1280 mA; steady orange: 1280–1600 mA; steady red: above 1600 mA F — Reset indicator Steady red during a bus restart C — input-voltage indicator Steady green: AC input; flashing green: DC input; steady red: input failure D — internal-temperature indicator Steady green: 0–75°C internally; steady red: outside this internal-temperature range E — bus-traffic indicator Flashing green: bus load below 80%; steady red: bus load at or above 80% G — programming indicator Steady red in programming mode The temperature LED refers to internal device temperature, not the permitted ambient operating temperature. Apply the ambient derating curve separately. Download the application database for this exact model so that its diagnostic indicators operate correctly; the programming control is marked for a press longer than 1 second. ETS Diagnostics and Communication Objects Objects 1–2 Heartbeat and power-supply-on indication Objects 3–6 Request all measurements; clear calculation data; request all calculations; request a bus reset Objects 7–10 Total working time; time since the last startup; bus-restart count; device-start count Objects 11–16 Measured output voltage and voltage alarm; measured output current and current alarm; internal temperature and temperature alarm Objects 17–20 Maximum current and temperature during the tracking period; measured bus load and bus-load alarm Objects 21–24 Overload count and duration; short-circuit count; time with the load detached Objects 25–36 Alarm 1, 2, 3 and 4, each with its own alarm state, event count and duration The D version provides 36 communication objects. Heartbeat and power-on use 1-bit trigger objects; request, clear and reset functions use 1-bit switch objects. Alarm states use 1-bit DPT 1.005 objects. Event counters use 2-byte DPT 7.001 values, and working-time and duration values use 4-byte DPT 13.100 values in seconds. Voltage measurement supports a 2-byte millivolt representation or a 4-byte DPT 14.027 voltage value. Current measurement and maximum-current tracking support 2-byte DPT 7.012 or DPT 9.021 values in mA, or a 4-byte DPT 14.019 value in A. Temperature and maximum-temperature tracking use 2-byte DPT 9.001 values in degrees Celsius. Bus load uses a 1-byte DPT 5.004 percentage encoding; the diagnostic traffic threshold is 80%. The data encoding range does not increase the permitted network loading. The default object priority is Low. The object table supplies communication, read, write, transmit and update flags (C, R, W, T and U); flags can be adjusted in ETS. Measurement, status and calculation objects use CRT by default, request/clear objects 3–5 use CW, and bus-reset object 6 uses CWU. Obtain the model-specific ETS application database from the manufacturer’s product catalogue or the ETS Online Catalog. Configure the group addresses, object formats and alarm functions for the actual installation. Wiring and KNX Line Limits Maximum bus devices on one line 256 with TP1-256 support Maximum supply-to-device distance 350 m Maximum distance between two bus devices 700 m Maximum combined cable length on one line 1000 m AC terminal order in the application drawing PE, N, L from left to right Bus-output polarity Red: positive; dark gray: negative The device-count limit does not replace current budgeting. Check the total demand of every bus and auxiliary load against 1280 mA, and apply all three cable-distance limits together. The auxiliary terminal drawing identifies −V on the left and +V on the right. Keep it separate from the choked KNX bus terminal and connect protective earth to PE; this is a Class I supply. Plan the KNX line around the 1280 mA shared output rating and TP1-256 device support. Follow the wiring requirements for this specific power-supply model. DIN Rail Mounting and Connections Catalogue dimensions, W × H × D 72 × 90 × 57 mm Installation width 4 SU DIN rail compatibility 35 mm DIN rail to EN 60715; TS35/7.5 or TS35/15 Solid-wire connection range 0.5–4 mm² Finely stranded-wire connection range 0.5–2.5 mm² Terminal tightening torque 0.8 N·m Slotted screwdriver size 2.5 × 0.4 mm to 3.5 × 0.6 mm Use vertical DIN rail mounting for the stated thermal curve. The mechanical drawing gives a general dimensional tolerance of ±1 mm. Select suitable rail and wiring hardware for the installation and keep the terminals accessible. The specification dimensions are 72 × 90 × 57 mm. The mechanical side drawing separately marks 54.5 mm and a 58.5 mm projection reference; use the complete drawing and the supplied unit when planning rail and wiring clearance. The documented interfaces are the mains/PE connection, choked KNX bus connection and auxiliary output. Select any additional terminals, cables and installation hardware for these interfaces and the actual installation. Cooling and Environmental Limits Cooling Free-air convection Working ambient temperature −30 to +70°C, subject to derating Vertical-installation load curve 100% from −30 to +45°C; reduce to 60% at +70°C Input-voltage load curve 100% at 180–264 VAC, 60 Hz Working humidity 20–95% RH, non-condensing Storage temperature and humidity −40 to +85°C; 10–95% RH, non-condensing Apply input-voltage and temperature limits together; the upper ambient-temperature rating does not mean full output at +70°C. Above 2000 m, the catalogue’s thermal note reduces the allowable ambient by 3.5°C per 1000 m for fanless operation. This note does not extend the separate overvoltage-category rating beyond 2000 m. Vibration qualification is 10–500 Hz at 2 G, with a 10-minute cycle for 60 minutes on each X, Y and Z axis. The enclosure is designed for IP20 protection; it is not a weatherproof enclosure. Safety and EMC Electrical protection class Class I with SELV output Overvoltage category Category III, up to 2000 m Input–output / input–FG withstand voltage 4.2 kVAC / 2 kVAC Isolation resistance Input–output and input–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Approved safety standards are BS EN / EN 61558-1 and 61558-2-16, and BS EN / EN 50491-3. The overvoltage-category statement references EN 61558 and EN 50178. EMC emissions are specified to BS EN / EN 50491-5-2 and 50491-5-3, and BS EN / EN 61000-3-2 and 61000-3-3. EMC immunity is specified to BS EN / EN 50491-5-2 and 50491-5-3, and BS EN / EN 61000-4-2, -3, -4, -5, -6, -8 and -11 for heavy-industry applications. This power supply is a component for installation in final equipment. Confirm the completed installation against the applicable EMC and safety requirements. Mass, Reliability and Application Mass, catalogue PACKING reference per unit 328 g Catalogue packing 0.328 kg; 48 units / 16.4 kg / 1.02 CUFT Minimum MTBF, Telcordia SR-332 1414.2K hours Minimum MTBF, MIL-HDBK-217F at 25°C 217.1K hours Warranty 3 years MTBF values are reliability references under the stated methods and conditions, not a guaranteed service lifetime. Typical applications include building and home automation, lighting and HVAC control, security and alarm systems, blind and shutter control, monitoring and energy management. Use the model-specific ETS information and installation instructions for the intended KNX project.

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The MEAN WELL KNX-40E-1280 is a 30 V KNX DIN rail bus power supply, with an integrated choke and a separate unchoked auxiliary output. Both outputs share a 1280 mA / 38.4 W rating. It accepts 180–264 VAC, uses free-air convection cooling and supports up to 256 bus devices within the current and wiring limits. Product Datasheet Download MEAN WELL KNX-40E Datasheet (PDF) The KNX-40E section is on PDF pages 5, 6, 7, 8, 9, 10, 11. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model KNX-40E-1280 Series KNX-40E Version Basic version without D diagnostic functions Bus output voltage with choke 30 V Auxiliary output voltage without choke 30 V Rated combined output current 1280 mA Rated output power 38.4 W Maximum ripple and noise before the choke 100 mVp-p Short-circuit current 2.8 A The integrated choke supplies the KNX bus, while the separate 30 V auxiliary output is unchoked. Both connections share one 1280 mA / 38.4 W output budget: I1 + I2 must not exceed 1280 mA. The auxiliary output is not an additional 1280 mA supply. Connect the bus only to the choked KNX output. Use the auxiliary output when a connected KNX device requires a separate auxiliary supply, and include that consumption in the combined current budget. The blank suffix identifies the basic version; suffix D identifies the diagnostic version. Select the complete suffix required for the installation. Input, Timing and Electrical Performance AC input voltage range 180–264 VAC DC input voltage range 176–280 VDC Input frequency 47–63 Hz Typical efficiency before the choke 86% Typical AC input current 0.5 A at 230 VAC Typical cold-start inrush current 60 A at 230 VAC Leakage current Less than 1 mA at 240 VAC Set-up / rise time at full load 1000 / 50 ms at 230 VAC Typical AC-failure backup time at full load 200 ms at 230 VAC Unless otherwise specified, measurements use 230 VAC input, rated load and 25°C ambient. Ripple and noise are measured before the choke at 20 MHz bandwidth with a 12-inch twisted pair terminated in parallel 0.1 µF and 47 µF capacitors. The inrush pulse width is typically 1200 µs, measured at 50% of the peak inrush current. The unit includes one integrated choke and a switching-frequency reference of 100 kHz. Protection and Bus Reset Short-circuit / overload response Constant-current limiting; automatic recovery after the fault is removed Overload threshold 205–235% of rated output power Overvoltage threshold 33–35 V Overvoltage recovery Hiccup mode; automatic recovery after the fault is removed Bus reset operation Press and hold the reset button for at least 20 seconds The red reset indicator illuminates during a bus restart. Reset interrupts the bus supply for the restart procedure; plan the reset around the connected building-control functions. Status Indicators A — bus-voltage indicator Steady green: 28–31 V; steady red: below 28 V; steady orange: above 31 V B — output-current indicator Steady green: below 1280 mA; steady orange: 1280–1600 mA; steady red: above 1600 mA F — Reset indicator Steady red during a bus restart The basic version provides the A, B and F indicators. The additional input, internal-temperature, traffic and programming indicators belong to the D diagnostic version. Wiring and KNX Line Limits Maximum bus devices on one line 256 with TP1-256 support Maximum supply-to-device distance 350 m Maximum distance between two bus devices 700 m Maximum combined cable length on one line 1000 m AC terminal order in the application drawing PE, N, L from left to right Bus-output polarity Red: positive; dark gray: negative The device-count limit does not replace current budgeting. Check the total demand of every bus and auxiliary load against 1280 mA, and apply all three cable-distance limits together. The auxiliary terminal drawing identifies −V on the left and +V on the right. Keep it separate from the choked KNX bus terminal and connect protective earth to PE; this is a Class I supply. Plan the KNX line around the 1280 mA shared output rating and TP1-256 device support. Follow the wiring requirements for this specific power-supply model. DIN Rail Mounting and Connections Catalogue dimensions, W × H × D 72 × 90 × 57 mm Installation width 4 SU DIN rail compatibility 35 mm DIN rail to EN 60715; TS35/7.5 or TS35/15 Solid-wire connection range 0.5–4 mm² Finely stranded-wire connection range 0.5–2.5 mm² Terminal tightening torque 0.8 N·m Slotted screwdriver size 2.5 × 0.4 mm to 3.5 × 0.6 mm Use vertical DIN rail mounting for the stated thermal curve. The mechanical drawing gives a general dimensional tolerance of ±1 mm. Select suitable rail and wiring hardware for the installation and keep the terminals accessible. The specification dimensions are 72 × 90 × 57 mm. The mechanical side drawing separately marks 54.5 mm and a 58.5 mm projection reference; use the complete drawing and the supplied unit when planning rail and wiring clearance. The documented interfaces are the mains/PE connection, choked KNX bus connection and auxiliary output. Select any additional terminals, cables and installation hardware for these interfaces and the actual installation. Cooling and Environmental Limits Cooling Free-air convection Working ambient temperature −30 to +70°C, subject to derating Vertical-installation load curve 100% from −30 to +45°C; reduce to 60% at +70°C Input-voltage load curve 100% at 180–264 VAC, 60 Hz Working humidity 20–95% RH, non-condensing Storage temperature and humidity −40 to +85°C; 10–95% RH, non-condensing Apply input-voltage and temperature limits together; the upper ambient-temperature rating does not mean full output at +70°C. Above 2000 m, the catalogue’s thermal note reduces the allowable ambient by 3.5°C per 1000 m for fanless operation. This note does not extend the separate overvoltage-category rating beyond 2000 m. Vibration qualification is 10–500 Hz at 2 G, with a 10-minute cycle for 60 minutes on each X, Y and Z axis. The enclosure is designed for IP20 protection; it is not a weatherproof enclosure. Safety and EMC Electrical protection class Class I with SELV output Overvoltage category Category III, up to 2000 m Input–output / input–FG withstand voltage 4.2 kVAC / 2 kVAC Isolation resistance Input–output and input–FG: 100 MΩ at 500 VDC, 25°C and 70% RH Approved safety standards are BS EN / EN 61558-1 and 61558-2-16, and BS EN / EN 50491-3. The overvoltage-category statement references EN 61558 and EN 50178. EMC emissions are specified to BS EN / EN 50491-5-2 and 50491-5-3, and BS EN / EN 61000-3-2 and 61000-3-3. EMC immunity is specified to BS EN / EN 50491-5-2 and 50491-5-3, and BS EN / EN 61000-4-2, -3, -4, -5, -6, -8 and -11 for heavy-industry applications. This power supply is a component for installation in final equipment. Confirm the completed installation against the applicable EMC and safety requirements. Mass, Reliability and Application Mass, catalogue PACKING reference per unit 328 g Catalogue packing 0.328 kg; 48 units / 16.4 kg / 1.02 CUFT Minimum MTBF, Telcordia SR-332 1414.2K hours Minimum MTBF, MIL-HDBK-217F at 25°C 217.1K hours Warranty 3 years MTBF values are reliability references under the stated methods and conditions, not a guaranteed service lifetime. Typical applications include building and home automation, lighting and HVAC control, security and alarm systems, blind and shutter control, monitoring and energy management. Use the model-specific ETS information and installation instructions for the intended KNX project.

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The MEAN WELL KNX-20E-640 is a 30 V KNX DIN rail bus power supply, with an integrated choke and a separate unchoked auxiliary output. Both outputs share a 640 mA / 19.2 W rating. It accepts 180–264 VAC, uses free-air convection cooling and supports up to 64 bus devices within the current and wiring limits. Product Datasheet Download MEAN WELL KNX-20E Datasheet (PDF) The KNX-20E section is on PDF pages 1, 2, 3, 4. Refer to the complete mechanical drawings and notes when planning installation. Model and Output Ratings Full model KNX-20E-640 Series KNX-20E Version Standard 230 VAC input version Bus output voltage with choke 30 V Auxiliary output voltage without choke 30 V Rated combined output current 640 mA Rated output power 19.2 W Maximum ripple and noise before the choke 100 mVp-p Short-circuit current 1.4 A The integrated choke supplies the KNX bus, while the separate 30 V auxiliary output is unchoked. Both connections share one 640 mA / 19.2 W output budget: I1 + I2 must not exceed 640 mA. The auxiliary output is not an additional 640 mA supply. Connect the bus only to the choked KNX output. Use the auxiliary output when a connected KNX device requires a separate auxiliary supply, and include that consumption in the combined current budget. The E code identifies the 230 VAC standard input version. A 115 VAC U input version is available by request as a separate configuration; confirm its exact model and ratings before ordering. Input, Timing and Electrical Performance AC input voltage range 180–264 VAC DC input voltage range 230–370 VDC Input frequency 47–63 Hz Typical efficiency before the choke 86% Typical AC input current 0.22 A at 230 VAC Typical cold-start inrush current 40 A at 230 VAC Leakage current Less than 1 mA at 240 VAC Set-up / rise time at full load 1000 / 50 ms at 230 VAC Typical AC-failure backup time at full load 200 ms at 230 VAC Unless otherwise specified, measurements use 230 VAC input, rated load and 25°C ambient. Ripple and noise are measured before the choke at 20 MHz bandwidth with a 12-inch twisted pair terminated in parallel 0.1 µF and 47 µF capacitors. No-load power consumption is less than 0.5 W. The unit includes one integrated choke and a switching-frequency reference of 65 kHz. Protection and Bus Reset Short-circuit / overload response Constant-current limiting; automatic recovery after the fault is removed Overload threshold 205–235% of rated output power Overvoltage threshold 33–35 V Overvoltage recovery Output shutdown; reapply input power to recover Bus reset operation Press and hold the reset button for at least 20 seconds The red reset indicator illuminates during a bus restart. Reset interrupts the bus supply for the restart procedure; plan the reset around the connected building-control functions. Status Indicators and Front-Panel Controls Green ON indicator Normal operation Red Reset indicator Bus reset Red I > Imax indicator Output overload or short circuit The mechanical drawing identifies the KNX bus terminal as callout 1, the auxiliary terminal as callout 2 and the reset button as callout 3. Callouts 4, 5 and 6 identify the green ON, red Reset and red I > Imax indicators. These are drawing callouts, not a connector pin-number assignment. Wiring and KNX Line Limits Maximum bus devices on one line 64 Maximum supply-to-device distance 350 m Maximum distance between two bus devices 700 m Maximum combined cable length on one line 1000 m AC terminal order in the application drawing L, N, PE from left to right Bus-output polarity Red: positive; black: negative The device-count limit does not replace current budgeting. Check the total demand of every bus and auxiliary load against 640 mA, and apply all three cable-distance limits together. Connect the auxiliary output using the marked +V and −V terminals. Connect protective earth to PE; this is a Class I supply. Two KNX-20E-640 supplies may operate in parallel on the same KNX line without a minimum cable-length requirement between the supplies, as specified in the application note. DIN Rail Mounting and Connections Catalogue dimensions, W × H × D 52.5 × 90 × 54.5 mm Installation width 3 SU DIN rail compatibility 35 mm DIN rail to EN 60715; TS35/7.5 or TS35/15 Solid-wire connection range 0.5–4 mm² Finely stranded-wire connection range 0.5–2.5 mm² Terminal tightening torque 0.8 N·m Slotted screwdriver size 2.5 × 0.4 mm to 3.5 × 0.6 mm Use vertical DIN rail mounting for the stated thermal curve. The mechanical drawing gives a general dimensional tolerance of ±1 mm. Select suitable rail and wiring hardware for the installation and keep the terminals accessible. The mechanical drawing separately marks 54.5 mm for the body depth and a 58.5 mm projection reference. Allow for the rail, terminals and connected wiring when planning installation clearance. The documented interfaces are the mains/PE connection, choked KNX bus connection and auxiliary output. Select any additional terminals, cables and installation hardware for these interfaces and the actual installation. Cooling and Environmental Limits Cooling Free-air convection Working ambient temperature −30 to +70°C, subject to derating Vertical-installation load curve 100% from −30 to +50°C; reduce to 60% at +70°C Input-voltage load curve 100% at 180–264 VAC, 60 Hz Working humidity 20–95% RH, non-condensing Storage temperature and humidity −40 to +85°C; 10–95% RH, non-condensing Apply input-voltage and temperature limits together; the upper ambient-temperature rating does not mean full output at +70°C. Above 2000 m, the catalogue’s thermal note reduces the allowable ambient by 3.5°C per 1000 m for fanless operation. This note does not extend the separate overvoltage-category rating beyond 2000 m. Vibration qualification is 10–500 Hz at 2 G, with a 10-minute cycle for 60 minutes on each X, Y and Z axis. The enclosure is designed for IP20 protection; it is not a weatherproof enclosure. Safety and EMC Electrical protection class Class I with SELV output Overvoltage category Category III, up to 2000 m Input–output / input–FG withstand voltage 4 kVAC / 2 kVAC Isolation resistance Input–output and input–FG: 100 MΩ at 500 VDC, 25°C and 70% RH The output–FG withstand voltage is 0.6 kVAC. Approved safety standards are BS EN / EN 61558-1 and 61558-2-16, and BS EN / EN 50491-3. EAC TP TC 004 approval is also listed. The overvoltage-category statement references EN 61558 and EN 50178. EN 60664-1 and EN 62477-1 are also listed for this model. EMC emissions are specified to BS EN / EN 50491-5-2 and 50491-5-3, and BS EN / EN 61000-3-2 and 61000-3-3. EAC TP TC 020 is also listed. EMC immunity is specified to BS EN / EN 50491-5-2 and 50491-5-3, and BS EN / EN 61000-4-2, -3, -4, -5, -6, -8 and -11 for heavy-industry applications. BS EN / EN 55035 and EAC TP TC 020 are also listed. This power supply is a component for installation in final equipment. Confirm the completed installation against the applicable EMC and safety requirements. Mass, Reliability and Application Mass, catalogue PACKING reference per unit 215 g Catalogue packing 0.215 kg; 60 units / 13.9 kg / 0.97 CUFT Minimum MTBF, Telcordia SR-332 1899.9K hours Minimum MTBF, MIL-HDBK-217F at 25°C 416.5K hours Warranty 3 years The catalogue specifies a 100% full-load burn-in test. MTBF values are reliability references under the stated methods and conditions, not a guaranteed service lifetime. Typical applications include building and home automation, lighting and HVAC control, security and alarm systems, blind and shutter control, monitoring and energy management. Use the model-specific ETS information and installation instructions for the intended KNX project.

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