ATS system on a 1250A switch

ATS systems on the switch – backup power supply safety

ATS cabinets based on a switch are a reliable solution for automatic power transfer between the mains and a generator. The basic version operates based on generator control, making it simple and ergonomic. The extended version can be equipped with a dedicated controller, allowing for the operation of multiple ATS cabinets with a single generator, as well as the creation of more complex emergency power systems. Upon customer request, the ATS can be manufactured in a four-pole version and adapted for outdoor installation.

SZR 1250 system – automatic transfer with a power of 787 kVA

What is SZR 1250?

The SZR 1250 is a backup power cabinet based on the ATyS r 3P three-pole switch, with a rated current of 1250 A and a power of 787 kVA . As standard, it operates based on generator control (e.g., AMF 25) and ensures fast, automatic switching between mains power and the generator.

Key technical parameters of the SZR 1250

• Rated power: 787 kVA

• Rated current (AC-1): 1250 A

• Nominal voltage: 400/230 V

• Frequency: 50 Hz

• Switch type: ATyS r 3P, 1250 A

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

• Lock type: mechanical/electric

• Protection class: IP 43

• Connection cable: 3 x 240 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 800 x 1800 mm

• Weight: 205 kg

What makes the SZR 1250 stand out?

• Robust ATyS three-pole switch – reliable operation in large installations.

• Simple operation thanks to control directly from the unit.

• Mechanical/electrical lock – safe use.

• IP 43 protection class – durability and reliability in difficult conditions.

• Can be expanded to a four-field version.

Additional features – SZR 1250 with its own controller

The extended version SZR 1250 can be equipped with the ATS2-70 controller, which allows:

• Control multiple ATS cabinets with one generator,

• Create more complex automation systems,

• Monitor operation and status online – increasing the security of the entire system.

Optional equipment SZR 1250

• Foundation or ground plinth – stable installation, height 500 mm.

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

• Four-field version – available on request.

• Additional sockets, locks, security features – according to individual needs.

Choose a reliable switch with SZR 1250

The SZR 1250 is a proven, robust, and expandable backup power cabinet. Choose the version that best suits your needs – with its own controller or simple operation from the generator.

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