Spindle actuator 900N
strong actuator suitable for roof openings
to be used together with ±24V control units
soft close function
automatically switches off when it reache its end positions due to the built-in electronic load switch-off. electronic actuator with micro controller
the actuator has an integrated reverse function to ensure a prolonged life span of the window gaskets easy mounting
maintenance free through permanent lubrication outer parts corrosion-free
heat resistant silicone connection cable.

This single actuator is equipped with an electric overload switch.
The product is to be connected to a ±24V power supply.

Brackets and fastenings to be ordered seperately.

Additional information



Window Master
WindowMaster brand products

Product Applications

This product is suitable for:

  • Top-hung windows
  • Bottom-hung windows
  • Pivoting frame windows
  • Roof windows
  • Cupolas
Product applications top & bottom hung , pivot windows & cupolas

Technical Details

WMS 309
Nominal voltage:
24V DC max. 10% ripple
Traction force:
900 N
Thrust force:
900 N  
300 mm / 500 mm /750 mm /1000 mm
Locking Force:
Current Consumption:
Max. 1A
Opening speed:
5.8mm/s (full load)
Length of power cable:
5m grey connection cable in silicon 3-core 0.75mm2 ø7.0mm
Operating temperature:
-5°C – +74°C max. 90% relative humidity (not condensing) 
Protection Class:
IP54 according to EN 50529
 WMS 309 0300    
 1.7 kg
 WMS 309 0500    
 2.1 kg
 WMS 309 0750    
 2.5 kg
 WMS 309 1000    
 3.1 kg

Download PDF's

Window Master WMS 309-n instructions
Window Master WMS 309-n installation

WMS 309 Data Sheet

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