ABB UD/S2.315.2.1 LED Dimmer 2x315 W/VA, 2-Channel KNX Universal Dimming Actuator, DIN Rail 2CKA006197A0053

The ABB UD/S2.315.2.1 stands out as a two-channel KNX dimming actuator capable of handling up to 315 W/VA per channel, making it suitable for a wide range of lighting loads including dimmable LEDs, incandescent lamps, and halogen lamps with electronic or conventional transformers. Its universal dimming principle automatically detects leading or trailing edge, simplifying installation and ensuring compatibility.

Highlights

• Two independent dimming channels, each rated for 315 W/VA
• Universal dimming principle with automatic load detection
• Supports dimmable LEDs, incandescent, and halogen lamps (HV/LV with electronic or conventional transformers)
• KNX bus powered (21-30 V DC) for reliable communication
• Compact DIN rail mounting, 4 modules wide (72 mm)

In daily use

This actuator integrates seamlessly into KNX building automation systems, providing smooth dimming from 0 to 100% with a minimum LED load of just 2 W. Built-in overload, short-circuit, and over-temperature protection ensure long-term reliability. Screw terminals allow secure connection of load circuits operating at 230 V AC, 50/60 Hz.

Full specifications

• Control Protocol: KNX
• Device Type: LED Dimmer Actuator
• Number of Channels: 2
• Output Power per Channel: 315 W/VA
• Total Output Power: 630 W/VA
• Load Type: Dimmable LEDs, Incandescent lamps, Halogen lamps (HV/LV with electronic or conventional transformers)
• Dimming Principle: Universal (leading edge / trailing edge automatic detection)
• Supply Voltage (Load): 230 V AC
• Frequency: 50/60 Hz
• KNX Bus Voltage: 21-30 V DC
• Installation Type: DIN Rail (MDRC)
• Module Width: 4 DIN modules (72 mm)
• Protection Class: IP20
• Operating Temperature: -5 °C to +45 °C
• Connection Type: Screw terminals
• Overload Protection: Yes
• Short-Circuit Protection: Yes
• Over-Temperature Protection: Yes
• Minimum Load (LED): 2 W
• Dimming Range: 0-100%

Final note

The ABB UD/S2.315.2.1 is a robust choice for professional KNX installations requiring reliable dimming of modern LED lighting.