WindowMaster WML 820 Chain Actuator
Available in stock
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
| Specification | Details |
|---|---|
| Material | Zinc housing protected against corrosion and stainless steel chain |
| Colour | Grey (RAL 7004) |
| Delivery Includes | Motor brackets, chain brackets, screws and installation instructions (WMa 450667 and 451036) |
| Compatibility | VELUX roof window GGL and GGU from size 206/F06 to 810/U10 and VL from size 035 |
| System Compatibility | WSC smoke ventilation control units |
| Control Requirement | WindowMaster window actuators must be connected to genuine WindowMaster control units only; otherwise no guarantee is accepted for the motors |
| Maintenance | Lubricate window hinges once per year. Smoke ventilation systems must be maintained and tested regularly according to local fire regulations. Annual service by authorized specialists recommended |
| Installation Notes | Installation in high humidity environments must comply with relevant regulations. Consult a qualified electrician if necessary |
| Service | WindowMaster service contract recommended to ensure long life and reliable operation |
| Smoke Ventilation Test | Tested according to DIN 18232, Part 3 (30 min / 300°C) |
| CE Marking | CE marked in accordance with relevant EU directives. Tested with genuine WindowMaster control units and meets EMC directive requirements |
| Dimensions | 520 mm × 30 mm × 87 mm (W × H × D) |
| Weight | 1.4 kg |
| Connection Cable | 1.5 m, 2-core 0.5 mm² silicon cable |
| Max Window Opening | 570 mm |
| Opening Speed | 10.5 mm/s |
| Opening Positions | Various positions up to max. 540 mm |
| Locking Force | 3000 N |
| Operating Conditions | -25 °C to +75 °C / up to 110 °C. Max. 90% relative humidity (non-condensing) |
| Nominal Voltage | 24 V DC (max. 25% ripple) |
| Current Consumption | Max. 1.0 A |
| Blocking Protection | Electronic disconnection; motor disconnects if blocked and can be reconnected at least 2 times per minute without overload |
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.
