MEAN WELL KAA Series KNX Switch & Dimming Actuators
Product Features
The KAA series provides intelligent control for building automation. Mounted on a standard DIN rail, these actuators communicate seamlessly over the KNX bus to manage lighting, blinds, heating, and other electrical loads.
- KNX Certified: Fully compatible with the global KNX standard and programmable via ETS software.
- Manual Control: Features push-button switches on the front panel allowing manual override of each channel for testing and maintenance without bus voltage.
- High Inrush Capacity: Specialized "-10" models are equipped to handle 16A loads with high capacitive inrush currents, making them perfect for large LED driver networks.
- Integrated Logic & Timing: Built-in programmable logic, time delays, scene recall, and staircase lighting functions.
- Compact Design: Slim 4SU (72mm) width DIN rail housing saves valuable space in distribution boards.
Technical Specifications
| Parameter | Specification Detail |
|---|---|
| Operating Voltage | Powered entirely by the KNX Bus (21 ~ 30VDC) |
| Current Consumption | < 15mA (Operating) / < 5mA (Standby) |
| Relay Ratings | 10A per channel (Standard) or 16A per channel ("-10" models) |
| Analog Output (KAA-4R4V) | 4 Channels of 0-10V or 1-10V DC dimming control |
| Operating Temp. | -30°C to +45°C |
| Mounting | DIN Rail TS-35/7.5 or 15 |
Series Range Overview
| Model | Type | Channels | Current Rating | Key Capability |
|---|---|---|---|---|
| KAA-8R | Switch Actuator | 8 Relays | 10A / Ch | General purpose switching for resistive and inductive loads. |
| KAA-8R-10 | Switch Actuator | 8 Relays | 16A / Ch | Optimized for high inrush currents (LED drivers, capacitive loads up to 140µF). |
| KAA-4R4V | Switch & Dim Actuator | 4 Relays + 4 Analog | 10A / Ch | Switches power and provides 0-10V/1-10V signals for LED dimming. |
| KAA-4R4V-10 | Switch & Dim Actuator | 4 Relays + 4 Analog | 16A / Ch | High inrush switching paired with 0-10V/1-10V dimming. |
Programming & Applications
The KAA series is designed to be highly flexible, making it a staple for system integrators working on commercial buildings, smart homes, and industrial facilities.
| Application | Implementation Details |
|---|---|
| Lighting Control | Use the KAA-4R4V to simultaneously switch AC power to LED drivers and control their brightness via the 0-10V output. Features programmable dimming curves (linear or logarithmic). |
| Heavy Load Switching | Use the KAA-8R-10 to manage circuits with a high concentration of electronic ballasts, motors, or HVAC equipment without damaging the internal relay contacts. |
| Heating & Blinds | Actuators can be configured in ETS to operate as independent switches or paired channels to control blind/shutter motors or heating valves. |
Integration Note: All configuration parameters, including logic gates, scene storage, and timer functions, are stored internally on the device after being programmed via the standard KNX ETS software. No external power supply is needed to power the logic board, as it draws directly from the KNX bus.
