ABB LR/S 2.16.1 KNX Universal Dimming Actuator, 2-Channel, DIN Rail

The ABB LR/S 2.16.1 is a KNX universal dimming actuator designed for switching and dimming lighting loads in KNX building automation systems. With two independent channels, it supports leading edge and trailing edge dimming, making it compatible with a wide range of lamp types including incandescent, halogen, dimmable LEDs, and dimmable CFLs. The device mounts on a standard DIN rail and occupies 4 TE (module widths). It features manual operation, scene control, staircase lighting function, and status feedback. Protection against short-circuit, overload, and over-temperature ensures reliable operation.

Advantages

Universal dimming principle (leading/trailing edge) ensures compatibility with diverse lamp technologies. Compact 4 TE design saves space in distribution boards. Integrated manual operation allows testing and commissioning without bus connection. Scene control and staircase lighting enhance user comfort and energy efficiency.

Suitable for

• KNX building automation systems
• Residential and commercial lighting control
• Dimmable LED, halogen, and incandescent lighting
• DIN rail mounting in distribution cabinets

Key specifications

• Product Type: KNX Universal Dimming Actuator
• Number of Channels: 2
• Output Type: Switching and Dimming
• Dimming Principle: Universal (Leading Edge / Trailing Edge)
• Max Load per Channel (Resistive): 300 W
• Max Load per Channel (LED): 100 W
• Control Protocol: KNX Bus
• Mounting Type: DIN Rail
• Module Width: 4 TE
• Bus Voltage: 21-30 V DC
• Connection Type: KNX Bus Terminal, Screw Terminals (Load)
• Protection Features: Short-circuit, Overload, Over-temperature
• Functions: Scene Control, Staircase Lighting, Manual Operation, Status Feedback
• Operating Temperature: -5 to +45 °C
• Storage Temperature: -25 to +70 °C
• Protection Class: IP20
• Housing Material: Plastic
• Certification: CE, KNX

Recommendations

For optimal performance, use with KNX bus power supply and ensure proper load matching. Suitable for professional installation by qualified electricians.