{"id":14317,"date":"2025-12-12T09:47:43","date_gmt":"2025-12-12T08:47:43","guid":{"rendered":"https:\/\/ventsystems.de\/produkt\/vs-la\/"},"modified":"2026-10-30T10:40:09","modified_gmt":"2026-10-30T09:40:09","slug":"vs-la","status":"publish","type":"product","link":"https:\/\/ventsystems.de\/en\/produkt\/vs-la\/","title":{"rendered":"VS-LA linear actuator for roof windows and skylights"},"content":{"rendered":"

In brief:<\/strong> The VS-LA linear actuator opens large bottom-hung, top-hung and side-hung sashes, centre-pivot sashes as well as heavy roof windows and rooflights. It delivers 600 to 5,000 N push and pull force with a stroke of 100 to 800 mm and can be integrated into 24 V systems. The standard bracket set is included in the price.<\/p>\n

VS-LA linear actuator at a glance<\/h3>\n

The VS-LA linear actuator has been specially developed for demanding applications in ventilation, smoke and heat exhaust ventilation (SHEV) and facade systems.<\/p>\n

With their slim, unobtrusive design and extremely high performance, they are ideal for large bottom-hung, top-hung and side-hung sashes, pivot sashes and even the heaviest Roof windows and skylights<\/a>. All models require little maintenance, are particularly quiet, and can be easily integrated into 24V systems.
\nFlexibly configurable directly via the selection bar:<\/p>\n

Push and pull force from 600 N to 5,000 N
\nStroke from 100 mm to 800 mm (infinitely adjustable depending on the model). The drives can be selected freely in the variant selection. Longer strokes are available on request. For use in smoke ventilation systems, the actuator, the window and an approved smoke control panel must be matched to one another and verified for each project \u2013 we will be happy to advise you.<\/p>\n

Replacement for spindle drives from other manufacturers:<\/strong> The VS-LA is an alternative to many linear drives from GEZE (e.g. E 250 NT, E 1500), Aum\u00fcller (PLA, PLS) and Kingspan STG \/ STG-Beikirch (M2, M9, M1). You will find the right variant in our comparisons: GEZE<\/a>, Aum\u00fcller<\/a>, Kingspan STG<\/a> \u2013 or in our guide Replacing window drives<\/a>.<\/p>\n

Which actuator for which window size?<\/h2>\n

Guide values for insulating glass (2 \u00d7 4 mm), bottom-hung windows and fanlights with 300 mm stroke, roof windows with 30\u00b0 pitch, including 1.5\u00d7 reserve. Snow load is not included. Calculate precisely with the Window actuator calculator<\/a>.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n
Window<\/th>\nSash weight<\/th>\nRequired force<\/th>\nSuitable actuator<\/th>\n<\/tr>\n<\/thead>\n
Bottom-hung window 0.8 \u00d7 0.6 m<\/td>\napprox. 11 kg<\/td>\napprox. 45 N<\/td>\nVS-KA<\/a> 250 N<\/td>\n<\/tr>\n
Bottom-hung window 1.2 \u00d7 0.8 m<\/td>\napprox. 21 kg<\/td>\napprox. 65 N<\/td>\nVS-KA<\/a> 250 N<\/td>\n<\/tr>\n
Fanlight 1.5 \u00d7 0.6 m<\/td>\napprox. 20 kg<\/td>\napprox. 80 N<\/td>\n2 \u00d7 VS-KA-i<\/a> synchronised or VS-DKA 800<\/a> (wider than 1.2 m)<\/td>\n<\/tr>\n
Roof window 1.0 \u00d7 1.0 m<\/td>\napprox. 22 kg<\/td>\napprox. 140 N<\/td>\nVS-KA<\/a> 250 N<\/td>\n<\/tr>\n
Roof window 1.2 \u00d7 1.5 m<\/td>\napprox. 40 kg<\/td>\napprox. 250 N<\/td>\nVS-KA<\/a> 400 N<\/td>\n<\/tr>\n
Roof window 1.5 \u00d7 2.0 m<\/td>\napprox. 66 kg<\/td>\napprox. 420 N<\/td>\nVS-DKA 800<\/a> or 2 \u00d7 VS-KA-i<\/a><\/td>\n<\/tr>\n
Rooflight, glass roof, heavy sashes<\/td>\nfrom approx. 80 kg<\/td>\nfrom approx. 600 N<\/td>\nVS LA<\/a>, VS-SA 2500<\/a> or VS-KA 2500<\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Matching accessories<\/h2>\n

The 24 V version needs a control unit; for the 230 V version a ventilation switch is enough.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n
Accessories<\/th>\nUsed for<\/th>\nNet price<\/th>\n<\/tr>\n<\/thead>\n
VS-C24-7A controller<\/a><\/td>\nconverts 230 V into 24 V and drives up to 7 actuators<\/td>\n60,00 \u20ac<\/td>\n<\/tr>\n
radio remote control VS-C24-F-1<\/a><\/td>\nfor the VS-C24-7A control unit<\/td>\n14,00 \u20ac<\/td>\n<\/tr>\n
Rain sensor VS-RS<\/a><\/td>\ncloses the windows when it rains<\/td>\n33,00 \u20ac<\/td>\n<\/tr>\n
Wind-rain light sensor VS-WRLS<\/a><\/td>\nWind, rain and brightness<\/td>\n55,00 \u20ac<\/td>\n<\/tr>\n
On-board charger VS-AD C24<\/a><\/td>\nHousing for the control unit<\/td>\n8,00 \u20ac<\/td>\n<\/tr>\n
VS-LT 230 ventilation switch<\/a><\/td>\nSwitch for 230 V actuators, flush-mounted<\/td>\n11,99 \u20ac<\/td>\n<\/tr>\n
VS-LT-A surface-mounted ventilation switch<\/a><\/td>\nSurface-mounted switch<\/td>\n12,99 \u20ac<\/td>\n<\/tr>\n
VS-AD LT surface-mounted housing<\/a><\/td>\nHousing for the VS-LT 230<\/td>\n6,80 \u20ac<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Frequently asked questions<\/h3>\n

What push force and stroke does the VS-LA linear actuator have?<\/h4>\n

The VS-LA is available with 600 N to 5,000 N push and pull force and 100 mm to 800 mm stroke. Longer strokes are possible on request.<\/p>\n

What is the VS-LA linear actuator suitable for?<\/h4>\n

For large tilt, top-hung and side-hung sashes, pivot sashes and the heaviest roof windows and rooflights in ventilation, SHEV and fa\u00e7ade applications.<\/p>\n

Can the VS-LA be used in smoke and heat exhaust (SHEV) systems?<\/h4>\n

For use in smoke ventilation systems, the actuator, the window and an approved smoke control panel must be matched to one another and verified for each project \u2013 we will be happy to advise you.<\/p>\n

Related guides<\/h4>\n