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KNX modules

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Universal switch actuator

KNX-SA24 module is a universal switch actuator, which makes it possible to control electrical devices (lighting, ventilation). The telegrams received from various KNX devices (e.g. sensors) are converted, via the module, into concrete actions, such as switching on/off light or fan.

The KNX-SA24 module has 8 relay outputs. Each of them corresponds to one logical channel.


  • communication with KNX bus via integrated bus connector
  • feedback on the state of module and individual channels
  • reaction of each channel can be defined in case of KNX bus voltage loss and recovery
  • reaction of each channel can be defined in case of mains voltage recovery
  • time functions (flashing, on/off delay, staircase light function with advance warning option and operating time change)
  • logic functions (AND, NAND, OR, NOR, XOR, XNOR)
  • threshold value function
  • safety functions
  • state forcing functions
  • scenes for each of the channels can be called up by using 1- and 8-bit commands
  • manual control of each channel state by using buttons situated on enclosure
  • status LEDs for each channel
  • capability of switching between resistive, inductive and capacitive loads
  • module configuration using ETS software
  • suitable for mounting on DIN rail (35 mm)

The actual appearance of the products may differ from the presented images. Product descriptions are provided in the web service for information purposes only.


quick installer guide
updated: 2020-01-28
353 KB
general information manual
updated: 2019-12-16
958 KB


German, English, Italian, Dutch, Polish, Russian, Slovak
compiled: 2020-04-03


Other certificates
updated: 2019-10-29
757 KB
EU declaration of conformity
updated: 2023-01-11
857 KB

Technical Data

Electrical endurance (number of switching cycles), AC1 (600 cycles/h)
> 10⁵ 16 A / 250 V AC
Electrical endurance (number of switching cycles), DC1 (600 cycles/h)
> 10⁵ 16 A / 24 V AC
Electrical endurance (number of switching cycles), AC3 (I = 3,5 A)
> 2,5 x 10⁵
Electrical endurance (number of switching cycles), AC1 (when loaded with 1000 W incandescent lamps)
> 0,9 x 10⁵
Fluorescent lamps (without compensation)
3680 W
Fluorescent lamps (parallel compensation)
2500 W, 200 µF
Fluorescent lamps (series compensation)
3680 W, 200 µF
Compact fluorescent lamps (without compensation)
3680 W
Compact fluorescent lamps (parallel compensation)
2500 W, 200 µF
HV 230V halogen lamps
3680 W
LV halogen lamps (electronic transformer)
2500 W
LV halogen lamps (conventional transformer)
2000 VA
High-pressure mercury lamps (without compensation)
3680 W
High-pressure mercury lamps (parallel compensation)
3680 W, 200 µF
Incandescent lamps
3680 W
Number of units on DIN rail
Number of relay outputs (2 independent paths, 4 relays per path)
Maximum switching frequency at no load
3 600 cykli/h
Maximum switching frequency at rated load, AC1
600 cykli/h
Maximum number of group addresses
Maximum number of associations
Maximum number of communication objects
Maximum switching power, AC1
4 000 VA
Maximum time of response to telegram
< 20 ms
Maximum tightening torque
0.5 N·m
Maximum power consumption
5 W
Maximum surge current
168 A 20 ms; 800 A 200 µs
Maximum cross-section of wire
2.5 mm²
240 g
Wetting current
10 mA
KNX bus voltage
20…30 V DC
Supply voltage
Contact rating
16 A
Capacitive load
16 A, max. 200 µF
Resistive load
3680 W
Current draw from KNX bus
< 10 mA
IP code
Enclosure dimensions
70 x 92 x 60 mm
Temperature range for storage / transport
Operating temperature range
Rated load current (power), AC1
16 A / 250 V AC
Rated load current (power), AC15
3 A / 120 V 1,5 A / 240 V (B300)
Rated load current (power), AC3
750 W (silnik jednofazowy)
Rated load current (power), DC1
16 A / 24 V DC
Rated load current (power), DC13
0,22 A / 120 V 0,1 A / 250 V (R300)

Information materials


2leaflet - end user

3leaflet - installer

4technical data

5product data sheet

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