The strong points of Nekos products are recognized in all the actuators, and KATO is the mother product of the entire family. An idea fulfilled by the expertise of its inventor over the last 10 years is now used by frame manufacturers, light dome manufacturers, electricians and special applications.
• Brackets for quick coupling of the actuator in its working position
• Variable strokes that can be electronically selected
• Ease of hooking the chain to the frame
• Relax function to eliminate damage to window gaskets.
The actuator is compact, with a cross-section of only 37mm×59mm, and the bodywork and brackets are made of high-strength composite material (glass fibre reinforced polyamide).

Previously sold as the Eltral KS30/40.

This actuator suits window’s from 200mm tall (from the opening edge to the hinges) and has a powerful 300NM push/pull force.  A low current draw of only 0.25A (230Vac) or 0.9A (24Vdc), and an internal current draw cutoff makes this simple to integrate with a variety of control options.  We have brackets to suit inward, outward and cill mounting options.

Additional information

Stroke (mm)

Selectable, 110, 200, 300, 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 (RAL 9004), Grey (RAL 7047), White (RAL 9003)

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