Power switch with thermal-magnetic trip unit DPX3 250 3P 250A 36kA 420239

Power circuit breaker with thermal-magnetic trip unit – reliable installation protection

This three-pole DPX3 250 power circuit breaker, with a rated current of 250A and a short-circuit breaking capacity of 36kA, is a robust solution for protecting electrical circuits. Designed for both industrial and public building applications, it provides effective protection against overloads and short circuits. Its design allows for mounting on a TH rail, simplifying installation and integration with existing systems.

Functionality and construction

The DPX3 3P circuit breaker features a precise thermal-magnetic trip unit. The adjustment range of the overload trip unit allows adaptation to the specific needs of the installation – from 200 to 250A. The short-circuit trip unit, with an adjustment range from 1250 to 2500A, ensures a rapid response in the event of a short circuit. The presence of a trip indicator facilitates identification of the device status after the protection has operated. The circuit breaker has one auxiliary changeover contact and one normally open contact, increasing its functionality and integration possibilities with control systems. Connection of the main contacts is made using screw connections.

Application and benefits

• Versatility: Suitable for protecting various circuits in commercial buildings, industrial plants and critical infrastructure.

• Effective protection: Provides reliable protection against overloads and short circuits, minimizing the risk of equipment damage and fires.

• Easy installation: The design adapted for mounting on a TH rail simplifies the installation and servicing process.

• Configurability: The ability to adjust the overload trip current allows adaptation to the load characteristics.

• Safety: Compliance with IEC 60947-2 standard guarantees a high level of safety.

• Status indicator: The built-in trip indicator allows for quick identification of the cause of the failure and facilitates diagnostics.

• Flexibility: Option of mounting on a DIN TH rail and the possibility of using a motor drive increase installation flexibility.

The DPX3 circuit breaker is not only a protective element, but also an investment in the long-term and safe operation of the electrical installation. Its solid construction and precise operation make it a trustworthy choice for both professional installers and end-users.