In short: Table of all window actuators: thrust 250–2500 N, stroke, voltage and prices from €65 net. Stock items from Hamburg, shipped within 24 h.
This overview lists all Vent Systems window actuators side by side with their key data: type, force, stroke, voltage and entry price. It helps with the initial selection. The exact sizing depends on sash weight, opening width and installation situation.
All actuators at a glance
| Actuator | Type | Force | Stroke | Voltage | Special feature | Price from (net) |
|---|---|---|---|---|---|---|
| VS-KA | Chain actuator | 250–1.500 N | 100–1.000 mm | 24 V / 230 V | All-round actuator for windows and roof windows | 65 € |
| VS-KA-i | Chain actuator | 250–1.500 N | 300–1.400 mm | 24 V | Modbus, synchronised operation | 145 € |
| VS-KA 2500 | Double chain actuator | 2,500 N | 300–1.000 mm | 24 V | IP66, for heavy sashes | 290 € |
| VS-DKA 800 | Double chain actuator | 800 N | 100–1.400 mm | 24 V / 230 V | two chains for wide sashes | 196 € |
| VS-CKA 300 | Concealed chain actuator | 300 N | 100–1.000 mm | 24 V | concealed in the window profile | 155 € |
| VS-SB 400/90 | Chain actuator with side-bending chain | 400 N | – | 24 V | opening angle up to 90° | 170 € |
| VS-SB 400-i | Chain actuator with side-bending chain | 400 N | 400–1.000 mm | 24 V | Modbus, synchronised operation | 171 € |
| VS LA | Linear actuator (spindle) | 600–5.000 N | 100–800 mm | 24 V | for rooflight domes and roof windows | 110 € |
| VS-LA-i | Linear actuator (spindle) | 800–5.000 N | 300–1.000 mm | – | Modbus, synchronised operation | 165 € |
| VS-SA 2500 | spindle drive | 2,500 N | 100–1.000 mm | – | self-locking, for heavy flaps | 170 € |
| VS-ZA 800 | Rack-and-pinion actuator | 800 N | 100–1.000 mm | 24 V / 230 V | large sashes and rooflight domes | 105 € |
| VS-ZA-i | Rack-and-pinion actuator | 600–800 N | 100–1.000 mm | – | Modbus, synchronised operation | 165 € |
| VS-VA 600 | Locking drive | 600 N | 20 / 50 mm | – | combined with a chain or spindle actuator | 125 € |
| VS-TA 400 | Door opener | – | – | 24 V DC | Single-leaf doors up to 90° | 290 € |
| VS-MKA | Mechanical chain operator | – | 50–400 mm | mechanical, no power | handwheel or crank | 50 € |
| VS-MKA2 | Mechanical chain operator | – | – | mechanical, no power | built-in crank | 85 € |
Prices from, net plus VAT and shipping, as of October 2026. For the VS-MKA the price is a guide price; we will quote the exact price on request. “–” means the value depends on the version or is given on the product page.
Which actuator fits?
- Chain actuators suit most tilt, side-hung and top-hung windows and need little space.
- Linear, spindle and rack-and-pinion actuators deliver high forces for rooflight domes, roof windows and large flaps.
- Actuators in the i-series have a Modbus interface and run in sync when several actuators work on one sash.
- Mechanical actuators of the VS-MKA series work entirely without power.
For smoke ventilation, the actuator, window and an approved smoke control panel must be matched and verified for the specific project. We do not supply smoke control panels, but we are happy to advise you on sizing the actuator.
Helpful for sizing: Calculate the thrust · Calculate chain length
All rack and pinion actuators with prices and delivery times can be found in the category Rack and pinion actuators.
Technically reviewed by Dietmar Heiken, Sales, Vent Systems HDI GmbH, Hamburg – around 20 years of industry experience. Questions? Phone +49 40 50694631 or info@ventsystems.de
Last updated: 29.10.2026
Questions? 040 50694631 · info@ventsystems.de
Decision table: which actuator for which window?
| Situation | Recommendation | Typical values | Model |
|---|---|---|---|
| Tilt or top-hung window, normal size | Chain actuator | 250–1,500 N, stroke 100–1,000 mm | VS-KA |
| Wide sash | Double chain actuator | 800 N, stroke up to 1,400 mm | VS-DKA 800 |
| Actuator should be invisible | Concealed chain actuator | 300 N, stroke 100–1,000 mm | VS-CKA 300 |
| Heavy rooflight dome or roof window | Linear actuator (spindle) | 600–5,000 N, stroke 100–800 mm | VS LA |
| Large, heavy sash with long stroke | Rack-and-pinion actuator | 800 N, stroke up to 1,000 mm | VS-ZA 800 |
| Several actuators in sync or building management system | i-series with Modbus | depending on model | VS-KA-i, VS-LA-i, VS-ZA-i |
| No power supply | Mechanical chain operator | Stroke 50–400 mm | VS-MKA |
Check force and stroke precisely: Window actuator calculator · All actuators compared
