ATS system on a 250A switch

ATS systems on the switch – automatic power control

Auxiliary power supply (AWS) cabinets with a switch are a reliable way to automatically switch power between the mains and the generator. The basic version relies on the generator's control signal, allowing for simple, robust, and ergonomic operation. The extended version, with its own controller, allows for the control of multiple AWS cabinets with a single generator, as well as the creation of more complex automation systems. Upon customer request, the AWS can be manufactured in a four-pole version and adapted for outdoor installation.

SZR 250 system – automatic switching at power up to 157 kVA

What is SZR 250?

The SZR 250 is a backup power cabinet with a reliable ATyS r 3P three-pole switch, rated at 250 A and rated at 157 kVA . As standard, control is via a signal from the generator (e.g., AMF 25), ensuring automatic, safe, and fast power transfer.

Key technical parameters of the SZR 250

• Rated power: 157 kVA

• Rated current (AC-1): 250 A

• Nominal voltage: 400/230 V

• Frequency: 50 Hz

• Switch type: ATyS r 3P, 250 A

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

• Lock type: mechanical/electric

• Protection class: IP 43

• Connection cable: 2 x 120 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: 72 kg

What makes the SZR 250 stand out?

• Reliable ATyS three-pole switch – safe switching in all conditions.

• Mechanical and electrical interlock – full control over power supply security.

• Simple operation – control by signal from the generator at no additional cost.

• IP 43 protection class – solid system protection.

• Can be expanded to a four-field version.

Additional features – SZR 250 with its own controller

The extended version SZR 250 can be equipped with the ATS2-70 controller, which enables:

• Support for multiple ATS cabinets with one generator.

• Construction of advanced automation systems.

• Monitor and manage your work online – full control and convenience.

Optional equipment SZR 250

• Foundation plinth: weight 14.5 kg, height 500 mm

• Ground plinth: weight 19 kg

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

• Four-field version - on request

• Additional sockets and security features – tailored to customer needs

Choose automatic reliability with SZR 250

The SZR 250 is a robust, expandable backup power system – whenever power needs to be available without interruption.

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