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.
