KNX R1-B4 compact 16 A

Actuator with 1 Potential-Free Switching Output

The potential-free output of the Actuator KNX R1-B4 compact switches one consumer load up to 16 Ampere.

Time functions such as an on/off delay or a staircase lighting function can be configured in the device application. Linking with AND or OR is also possible.

4 digital inputs are available for the connection of binary contacts. For example, a pushbutton can be connected here.


  • KNX R1-B4 compact connection diagramm KNX R1-B4 compact connection diagramm
  • KNX R1-B4 compact connection diagramm KNX R1-B4 compact connection diagramm
  • Free of potential relay output for a consumer load with up to 16 A. Designed as double terminal, so that two loads can easily be connected as a group.
  • Timer functions: on and/or off delay, staircase lighting timer switch with adjustable prewarning (light blinks prior to switch-off)
  • Scene control for switching state with 8 scenes
  • 4 binary inputs

Configuration is made using the KNX software ETS 5.

Housing Plastic
Colour White
Assembly Flush-mounted (in connector socket)
Protection category IP 20
Dimensions Ø approx. 52 mm, depth approx. 24 mm
Weight approx. 40 g
Ambient temperature Operation -20…+45°C, storage -30…+85°C
Ambient humidity 5...80% RH, non-condensing
Operating voltage KNX bus voltage
Current at the bus relay not energised: 15 mA
relay energised: 25 mA
Output 1 × output, free of potential
power supply U : 2× OUT A1
Output load capacity:
  • 16 A with alternating voltage, maximum 250 V AC
  • UL approval UseGroup B up to 15 A at 250 V AC
  • UL approval UseGroup D up to 10 A at 250 V AC
  • 5 A with direct current 30 V DC
  • Inputs 4× digital, potential-free, maximum cable length 10 m
    Data output KNX +/- bus connector terminal
    BCU type Integrated microcontroller
    PEI type 0
    Group addresses max. 254
    Assignments max. 254
    Communication objects 45
    made in germany