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.
