Chain Actuator WMU 952

Product Description


Chain actuator 230V AC

  • Hassle-free installation.
  • Ideal for commercial applications with out-of-reach roof light windows.
  • Entrapment protection function: The actuators are programmed to reverse if they encounter obstacles when closing.
  • Weather seal protection function: Integrated reverse function after closing to release pressure and ensure a prolonged life span of the window gaskets and airtightness.
  • Connection to existing electric installations as the window actuator runs on 230 VAC installations.



  • 230V AC chain actuator for surface mounting.
  • ​For comfort ventilation.
  • For top hung, bottom hung, pivot and turning windows.
  • Built-in electronic load switch-off/end-stop for motor protection.
  • Made to easily connect to an open/close/stop key-pad.
  • Soft close function.
Technical specifications
Chain opening Depending on variant – see product sheet
Opening speed Depending on variant – see product sheet
Chain stroke See product sheet
Opening / closing speed 8mm/s
Pressure force 500N – see pressure/traction force diagram
on the product sheet
Tractive force 300N
Primary voltage 230VAC, ±10%, 50/60Hz, 50VA
Current consumption 0.45 A
Size 42 x 57 x 605 mm (H x D x L)/( L= 605 + 18 = 623 mm incl. screws)
Colour Anodized aluminium



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