ATS system on 50A contactors

ATS systems on a contactor – reliable switching in a compact version

Contactor-based standby power supply (ATS) cabinets are a reliable, proven solution for automatic power transfer between the mains and a generator. The basic version operates based on a control signal from the generator, ensuring simple, ergonomic, and robust operation. The extended version, with its own ComAp controller, allows for the operation of multiple ATS cabinets with a single generator and the construction of more complex automation systems. Upon request, the ATS can be manufactured in a four-pole version and adapted for outdoor installation.

SZR 50 system – automatic switching at power up to 30 kVA

What is SZR 50?

The SZR 50 is a backup power cabinet based on a robust three-pole LC1E3210P7 contactor, with a rated current of 50 A and a power of 30 kVA . In the basic configuration, control is performed from a generator (e.g., AMF 25), allowing for quick and safe power switching.

Key technical parameters of the SZR 50

• Rated power: 30 kVA

• Rated current (AC-1): 50 A

• Rated current (AC-3): 32 A

• Nominal voltage: 400/230 V

• Frequency: 50 Hz

• Contactor type: LC1E3210P7 (three-pole)

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

• Lock type: mechanical/electric

• Protection class: IP 43

• Connection cable: 10 mm²

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

• Operating conditions: up to 2000 m above sea level

• Dimensions (L x W x H): 800 x 600 x 300 mm

• Weight: 36 kg

What makes SZR 50 unique?

• Compact three-pole contactor – reliable switching at low loads.

• Mechanical and electrical lock – safe use.

• Simple operation – automation based on the signal from the generator.

• IP 43 housing – ready to work in various conditions.

• Possibility of making a four-field version.

Additional features – SZR 50 with its own controller

The extended version of the SZR 50 can be equipped with the ATS2-70 controller, which enables:

• Operation of several ATS cabinets with one generator.

• Construction of more advanced automation systems.

• Online work monitoring – full control and power security.

Optional equipment SZR 50

• 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 customer needs

Choose a reliable power supply with SZR 50

The SZR 50 is a compact, reliable and expandable solution – where automatic power switching is crucial.

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