ATS system on 300A contactors

ATS systems on the contactor – reliable power supply without interruptions

Auxiliary power supply (AWS) cabinets with a contactor are a proven and simple solution that automatically switches power between the mains and the generator. The basic version is based on the generator's control signal, ensuring reliable and ergonomic operation. The extended version, with its own ComAp controller, allows for the control of multiple AWS cabinets with a single generator and the construction of more advanced automation systems. Upon customer request, the AWS can be manufactured in a four-pole version and adapted for outdoor operation.

SZR 300 system – automatic switching at power up to 188 kVA

What is SZR 300?

The SZR 300 is a backup power cabinet based on the reliable LC1E250M5 three-pole contactor, with a rated current of 300 A and a power of 188 kVA . In the basic configuration, control is performed directly from the generator (e.g., AMF 25), ensuring automatic power switching whenever needed.

Key technical parameters of the SZR 300

• Rated power: 188 kVA

• Rated current (AC-1): 300 A

• Rated current (AC-3): 250 A

• Nominal voltage: 400/230 V

• Frequency: 50 Hz

• Contactor type: LC1E250M5 (three-pole)

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

• Lock type: mechanical/electric

• Protection class: IP 43

• Connection cable: 150 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 300 stand out?

• Reliable three-pole contactor – fast and reliable switching.

• Mechanical and electrical locking – maximum operational safety.

• Simple and proven configuration – control by signal from the generator.

• IP 43 tightness class – resistance to difficult conditions.

• Possibility of making a four-field version.

Additional features – SZR 300 with its own controller

The extended version SZR 300 can be equipped with the ATS2-70 controller, which allows:

• Operation of several ATS cabinets with one generator.

• Creation of complex automation systems.

• Monitor your work and status online – even more security.

Optional equipment SZR 300

• 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 – according to your needs

Choose a reliable switch with SZR 300

The SZR 300 is a compact, reliable and expandable solution – wherever power supply automation must function flawlessly.

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