LED dimmer 4 x 210 W/VA, Busch installation bus KNX, REG universal dimming actuators, LED dimmer 4 x 210 W/VA 1-4-way multi-channel universal dimming actuator optimized for dimming retrofit LED lamps (LEDi). Also suitable for dimming incandescent lamps, low-voltage halogen lamps with conventional or electronic transformers, 230 V halogen lamps and dimmable halogen energy-saving lamps. Automatic load detection (can be deactivated). Separate N connection per channel. Parallel connection of the outputs is possible to increase the output power. Outputs can be connected in parallel as required. Minimum load: 2W. Manual operation on the device is also possible without bus voltage or when unprogrammed. The device can also be programmed without a 230V supply voltage. Extensive test and diagnostic functions via the i-bus tool. Fast parameterization in the ETS using copyable channel templates. With integrated bus coupler. Nominal power at 230 V~ mains voltage: 230 V~ incandescent and halogen lamps: 4 x 210 W/VA to 1 x 600 W/VA. Dimmable 230 V~ LEDi: 4 x 210 W/VA to 1 x 600 W/VA in trailing edge phase control, 4 x 80 W/VA to 1 x 200 W/VA in leading edge phase control. Inductive L-transformers with LED/low-voltage halogen lamp: 4 x 210 W/VA to 1 x 600 W/VA. Electronic C-transformers with LED/low-voltage halogen lamp: 4 x 210 W/VA to 1 x 600 W/VA. Electronic LC-transformers with LED/low-voltage halogen lamp: 4 x 80 W/VA to 1 x 200 W/VA. Control elements: One LED control button per channel (including color status display) for switching ON and OFF as well as for dimming up and down. Connections: KNX line: bus connection terminal Nominal voltage: 230 V~, +10% / -10% Nominal frequency: 50 Hz/60 Hz Outputs: 4 Nominal power: 2 - 210 W/VA Protection class (device): IP20 Temperature range (device): -5 °C to 45 °C Dimensions (H x W x D): 90 mm x 108 mm x 64 mm Installation depth: 68 mm Division unit: 6