WindowMaster WMU 842-1 Chain Actuator
Available in stock
WindowMaster WMU 842-1 Chain Actuator is engineered for professional window automation systems. With 24V power and 400N force output, it delivers reliable, smooth operation for large and heavy windows. Built for demanding installations where dependable performance and elegant design are essential.
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| Specification | Details |
|---|---|
| Voltage | 24V DC (+/- 10%) |
| Push Force | 400 N |
| Pull Force | 500 N |
| Locking Force | 3000 N |
| Opening Stroke | 750 mm or 1000 mm (programmable) |
| Opening Speed | 12.5 mm/s |
| Current Consumption | 2.0 A |
| Operating Conditions | -15°C to +74°C, max. 90% relative humidity (non-condensing) |
| Switch-on Duration | ED 20% (max. 4 min per 20 min) |
| Colour | Silver anodised or custom RAL colour |
| IP Rating | IP 54 |
| Life Span | 10,000 opening and closing movements |
| Delivery Includes | 1 × Actuator (fixing brackets sold separately) |
| Flex Length | 5 m |
| Cable Dimensions | 2-Core (plus 1 communication wire) |
| Min. Window Width |
> 1007 mm (750 mm stroke) > 1247 mm (1000 mm stroke) |
| Max. Window Width | < 1300 mm (use multiple actuators if wider) |
| Synchronisation | Yes (programmable) |
Discover more in our FAQ
Our commitment to technical excellence and exceptional customer service has made us a trusted name in the industry. For professional guidance on your ventilation project, contact us today.
What is an actuator on a window?
What is an actuator on a window?
A window actuator is a device installed on a window that allows it to open and close automatically, eliminating the need for manual operation. They are ideal for hard-to-reach windows and rooflights, multiple windows that need to operate simultaneously, or buildings aiming to take advantage of automated windows and enhanced natural ventilation.
What are the key types of window actuators?
What are the key types of window actuators?
- Electric Chain Actuator: Pushes/pulls the window using a chain; good for medium-sized windows; smooth and quiet.
- Linear/Spindle Actuator: Uses a screw-like spindle to extend/retract; precise and robust; supports heavier windows.
- Folding Arm Actuator: Uses a hinged arm to swing the window open; allows wide openings; good for heavy or outward-opening windows.
What to consider when choosing a window actuator?
What to consider when choosing a window actuator?
When selecting a window actuator, keep the following in mind:
- Window Type & Size - Make sure the actuator is suitable for the window's design, dimensions, and weight.
- Force Requirements - Choose an actuator capable of providing enough force for smooth and reliable operation.
- Voltage & Power Supply - Decide between 24V or 230V options depending on your building's electrical setup.
- Mounting & Aesthetics - Consider available space and how visible the actuator will be.
Who can install a window actuator?
Who can install a window actuator?
Window actuators, used for high-level windows or roof vents, can be installed by qualified professionals such as window automation specialists, automated ventilation technicians, glaziers, or electricians.
