Topp ACK4 RWA Chain Actuator
Electric actuator Topp model ACK4 with a double link articulated stainless steel chain, enclosed in a special diecast aluminium casing, painted with epoxy powders, with different mounting accessories for top and bottom hung windows. Operation at 24V DC. Max. traction and thrust force 300N. End of stroke adjustable at 100, 150, 200, 205, 300, 350, 400 mm by an external knob located on both sides of the actuator. Electronic device with acoustic warning to signal erroneous installation (buzzer).

Upon request, a preset S version for the synchronous operation of more actuators on the same window is available.
High protection IP 55 rated. CE marked device, complying with the EN12101-2 standard designed for smoke ventilation applications.

This product is suitable for:

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

Max applicable load in thrust: 300 N

Max applicable load in traction: 300 N

Strokes (selectable at any time):

100 – 150 – 200 – 250 – 300 – 350 – 400 mm

Idle translation speed: 27 mms

Protection Class: IP 55

Voltage supply: 24v DC

Colours Available:

Available in black


Available in white


Available in silver


Additional information

Stroke (mm)

Selectable, 100, 150, 200, 250, 300, 350, 400

Max Force (N)


Supply Voltage


Max Current (amps)


Max Speed (mm/s)


Window Types

Bottom Hung, Centre Pivot, Rooflight, Side Hung, Skylight, Top Hung

IP Rating




Black, Silver (RAL 9006), White (RAL 9010)



Product Applications

This product is suitable for:

  • Top-hung windows
Product applications top hung windows

Technical Details

Model:  ACK4 24V
Power voltage:  24V c.c.
Max applicable load in thrust:  300N
Max applicable load in traction:  300N
Strokes:  100 – 150 – 200 – 250 – 300 – 350 – 400 mm
Absorbed current:  1,35 A
Idle translation speed:  17 mms
Duration of the idle stroke:  23 s
Double electrical insulation  Yes
Service type:  S2 di 3 min
Operating temperature:  – 5°C + 50°C
Protection Class:  IP 55
Window mounting adjustment:  10 mm
Parallel connection option:  yes
Synchronous operation of more actuators on the same window: with S version
Chain position control: Yes
Stroke end:  encoder
Audio alarm for reporting an incorrect assembly: Yes
Dimensions:  288,5x83x47,8 mm
Weight of the installed unit: 1,9 kg weight is subject to variations, depending on the chosen accessories

Download PDF's

TOPP Chain actuator ACK4 RWA instructions

TOPP Chain actuator ACK4 RWA pdf details

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