Call: 0845 519 0560 or 01702 826 267

Open for business:             We are working to government guidelines to make deliveries safer due to the COVID-19 outbreak.             Stay safe everyone.


Window Master WMS 409-n

By: Joseph

Brand: Window Master | Manufacturer Part numbers: WMS 409-n

This product is suitable for:

  • Top-hung windows
  • Bottom-hung windows
  • Skylights, roof windows
  • Pivot frames
  • Cupolas
Specifications at a glance:

Traction force:  900 N
Thrust force:  900 N
Strokes:  300 mm / 500 mm / 750 mm / 1000 mm
Protection Class:  IP 54
Voltage supply: 24v DC

Colours Available:

Available in Silver Anodised

Bracket Options:
Get in touch for help picking the right brackets for your window.

Call 01702 826267 to order or for advice
Next Day Delivery on 100s of Products
Free for Trade & Public

Don’t worry call us on our product support line and our experts will give you free advice and guidance
to find the correct product for your application: 01702 826267


Spindle actuator 900N MotorLink®

Spindle actuator 900N with MotorLink®
For smoke and comfort ventilation

24V Nominal voltage
The product is to be connected to a ±24V power supply

Smoke ventilation according to EN 12101-2
The product is suitable for smoke ventilation according to EN 12101-2 and uses natural driving forces for the efficient exhaust of smoke and heat

The product communicates with power supplies with MotorLink® – an intelligent patented digital communication from WindowMaster

Natural ventilation
The product is suitable for comfort ventilation to ensure that the building’s users enjoy a comfortable indoor climate

Strong actuator suitable for roof openings for smoke and comfort ventilation
To be used together with ±24V control units or control units with MotorLink®
Synchronization of up to 4 window actuators – no need for an external synchronization module
Genuine position feedback and 3 speeds when using control unit with MotorLink®

The electronics in this actuator can be programmed to suit specific requirements – i.e. pressure- and traction force, stroke, speed/sound level – with the WAT 100 programming box, this is also possible following installation

The actuator has an integrated reverse function to ensure a prolonged life span of the window gaskets
Brackets and fastenings to be ordered seperately.

Buy Now

Free Live Product Support - help finding window opener products

Order Now by Phone

The range of manual and electric window openers is vast and choosing the right solution depends on your needs. Our website carries just a sample of the most popular products we sell, but by no means covers everything we stock or can supply. It is always best to call us and we will help you confirm if it is the correct product for your exact needs.

To Order Dial: 01702 826 267


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 409-n

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:

Opening speed:
12.5mm/s (full load)

Length of power cable:
5m grey connection cable in silicone 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 409-1 0300  
 1.8 kg

WMS 409-1 0500  
 2.3 kg

WMS 409-1 0750
 2.7 kg

WMS 409-1 1000
 3.1 kg

Download PDF's

Window Master WMS 409-n instructions
Window Master WMS 409-n installation