ATS system on a 400A switch

ATS systems on the switch – power supply security at your fingertips

Auxiliary power supply (AWS) cabinets with a switch are a proven solution where automatic switching of power from the mains to the generator and vice versa is crucial. The basic version relies on a control signal from the generator, ensuring simple, robust, and ergonomic operation. The extended version, with its own controller, allows for the operation of multiple AWS cabinets with a single generator and the creation of more advanced automation systems. Upon customer request, the AWS can be manufactured in a four-pole version and adapted for outdoor installation.

SZR 400 system – reliable switching at power up to 251 kVA

What is SZR 400?

The SZR 400 is a backup power cabinet based on the reliable ATyS r 3P three-pole switch, with a rated current of 400 A and a power of 251 kVA . In its basic version, it operates based on a control signal from the generator (e.g., AMF 25), ensuring fast, automatic switching without the need for extensive configuration.

Key technical parameters of the SZR 400

• Rated power: 251 kVA

• Rated current (AC-1): 400 A

• Nominal voltage: 400/230 V

• Frequency: 50 Hz

• Switch type: ATyS r 3P, 400 A

• Control: from the unit – AMF 25 (basic version)

• Lock type: mechanical/electric

• Protection class: IP 43

• Connection cable: 2 x 185 mm²

• Operating temperature range: -25°C to +40°C

• Operating conditions: up to 2000 m above sea level

• Dimensions (L x W x H): 600 x 320 x 1200 mm

• Weight: 75 kg

What makes the SZR 400 stand out?

• ATyS three-pole switch – reliable operation even under heavy loads.

• Mechanical/electrical interlock – switching safety.

• Simple configuration – control by signal from the generator.

• IP 43 housing – resistance to operating conditions.

• Possibility of making a four-field version.

Additional features – SZR 400 with its own controller

The extended version of the SZR 400 can be equipped with the ATS2-70 controller, which allows:

• Operate multiple ATS cabinets with one generator.

• Create more complex automation and monitoring systems.

• Manage your switches and monitor status online – conveniently and securely.

Optional equipment SZR 400

• Foundation plinth: weight 14.5 kg, height 500 mm

• Ground plinth: weight 19 kg

• Set for external installation: roof, controller cover, heater

• Four-field version - on request

• Additional sockets and security features – according to your needs

Choose a reliable switch with SZR 400

The SZR 400 is a robust, compact and expandable power supply automation system – whenever power needs to be available without interruption.

Have any questions? Contact us – we'll recommend the best ATS system for your installation!