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Smoke and Natural Ventilation Specialists     |     Established 1998

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Window Actuators

Automatic Window Actuators

Ideal for office buildings and commercial structures where aesthetic considerations are paramount.

Fully automated and operates on receipt of a signal from fire detection or sprinkler systems.

Can also be used as a highly effective natural ventilation system in conjunction with low level inlets.

Ideal for incorporation into atrium and shopping mall smoke and natural ventilation systems.

Available in 24V DC power supply with battery back-up or 230V AC mains power supply as required.

Automatic Window Opening Systems
UCS Rack Catalogue.pdf

Natural smoke ventilation uses the inherent buoyancy of hot smoke to rise above escape routes thus leaving the occupants with a greater chance of making a safe escape. By introducing automatic window at high level that open upon detection of smoke, the smoke is allowed to escape to the atmosphere.

Automatic opening inlet windows at low level maintain the smoke reservoir at a safe level above head height to increase occupant’s visibility during escape.

It may be advantageous to use the windows (which are already installed in the fabric of the building) to provide additional fresh air to supplement an existing heating and cooling strategy. Control of the windows can deliver a low cost solution.

It is very advantageous to design window automation in at concept stage either as a fully blown natural ventilation system or as a hybrid mixed mode solution. Either way using automated windows brings huge cost savings for the running costs and therefore a lower carbon footprint.

Design Features

Product Finish

Suggested Applications

Model Dynamics  and Dimensions


Rack 230V AC

Rack 24V DC

Voltage Supply

230 Vac ± 10%

24V dc ± 10%

Electric Connection Operation

3 wires + earth

2 wires

Force in Push Action

650 N

750 N


~ 8 mm/s

~ 8 mm/s

Current Absorption (with mass load)

0.1 A

1 A

Parallel Connection



Limit Stop



Safety Stop



Signal Limit Stop Position


Time Rating



Protection Class

IP 55

IP 55

Stroke (mm)

180, 350, 550, 750 and 1000

180, 350, 550, 750 and 1000



MULTIPLE SYSTEMS - To guarantee more push points on the same vent the rack actuator can be used either in the Dual Rack version with rack groups or in the Double rack version with auxiliary rack actuators; these systems, since guarantee stability,  are particularly adapt to open domes and very large top hinged windows. Dual Rack: Force 650 N (230 Vac) - 750 N (24 Vdc)  For each system assembly are necessary 1 Rack actuator, 1 Rack group, 1 connecting rod and 2 end brackets   (part No. 40234E see following accessories) Double Rack: Force 1300 N (230 Vac) - 1500 N (24 Vdc)  For each system are necessary 1 Rack actuator, 1 Auxiliary Rack actuator in parallel connection, 1 connecting rod,  and 2 end brackets (part No. 40234E see following accessories). Other multiple systems: It is also available a rack group double pivot for 3 or more push - points systems.

Technical Detail for Specifications

UCS Manual Openers Catalogue.pdf

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