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Nekos Kato 253 Chain Actuator

The Nekos Kato 253 is a high-performance Italian-engineered electric chain actuator specifically designed for the automation of top-hung and bottom-hung windows. Combining a robust 250N push/pull force with a streamlined 386mm aluminium housing, this 230V AC model offers a reliable, low-maintenance solution for residential and commercial ventilation. Its precise 240mm stroke and 8 mm/s travel speed ensure smooth, controlled operation for improved indoor air quality.

Quick Answer

The Nekos Kato 253 is a surface-mounted 230V AC motorized chain actuator used to automate the opening and closing of top-hung or bottom-hung windows for ventilation, offering a fixed 240mm opening distance.

✓Industrial-grade 250N load capacity for reliable window sealing and opening.
✓High-tensile double-link chain designed for lateral stability and durability.
✓Slim 386mm powder-coated aluminium housing for aesthetic integration.
✓Energy-efficient 230V AC motor with a low 0.11A current consumption.
✓Built-in safety stop mechanism and rain-sensor compatibility for smart protection.

Choose the Nekos Kato 253 if you require a premium, mains-powered Italian actuator for medium-sized ventilation windows where reliability and a sleek, surface-mounted profile are the primary requirements.

✓ Who Should Buy

  • •Commercial office managers looking for durable, wired window automation for top-hung ventilation.
  • •Homeowners seeking a high-quality Italian-made motor for high-reach bathroom or kitchen windows.
  • •Electrical contractors requiring a simple 230V AC direct-wire solution without external power supplies.

✕ Who Should Avoid

  • •Users looking for native App or Wi-Fi control (this model requires a wired wall switch).
  • •Outdoor or highly exposed installations where an IP rating higher than IP20 is required for moisture protection.
Product Overview
The Nekos Kato 253 stands as a benchmark in window automation, merging Italian design sensibility with rigorous mechanical performance. Engineered for surface mounting, this actuator features a double-link stainless steel chain that remains rigid under pressure while retracting completely into a compact, white powder-coated casing. This makes it an ideal choice for retrofit projects where existing window frames require modernization without extensive structural modification. Operating at 230V AC, the Kato 253 bypasses the need for complex DC power transformers, allowing for direct wiring into the building's electrical mains. With its 8 mm/s opening speed and IP20 rating, it provides a quiet and efficient ventilation solution for interior spaces. The inclusion of a manual override ensures that even in the event of power loss, window security and functionality are never compromised.

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Engineering Analysis
The internal drivetrain of the Kato 253 features a high-ratio gear system that converts the high-speed rotation of the 230V motor into high-torque linear motion. The safety stop mechanism is current-sensing; it monitors the 0.11A draw and immediately cuts power if an obstruction causes a spike in resistance, preventing mechanical failure. Additionally, the double-link chain architecture is designed to minimize the 'sway' common in cheaper actuators, ensuring that the 240mm stroke remains perfectly linear even under wind load.

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