Power circuit breaker with electronic trip unit DPX3 250 EL 4P 250A 50kA 420379

Power circuit breaker with electronic trip unit – reliable installation protection

This four-pole DPX3 250 EL power circuit breaker with a rated current of 250A and a short-circuit breaking capacity of 50kA is a robust solution for protecting electrical circuits. The use of an electronic trip unit ensures precise and fast response to overloads and short circuits, minimizing the risk of damage and downtime. The design intended for mounting on a TH rail guarantees easy and quick installation in electrical cabinets.

Functionality and application

The DPX3 250 EL circuit breaker is designed to protect electrical installations in commercial buildings, industrial facilities, and critical infrastructure. Thanks to the wide range of overload (100-250A) and short-circuit (150-2500A) trip settings, it can be adapted to the specific needs of a given installation. The built-in undervoltage release further increases safety, protecting against the effects of voltage drops. The ability to mount additional auxiliary contacts (normally open and normally closed) allows integration with control and signaling systems.

Advantages in practice

• Precise protection: The electronic trip unit provides accurate tripping characteristics, protecting devices from damage caused by overloads or short circuits.
• Fast response: Short response time to failures minimizes the risk of damage to the electrical installation.
• Versatility: A wide range of settings allows the circuit breaker to be adapted to different types of loads and operating conditions.
• Easy installation: The design adapted for mounting on a TH rail facilitates and speeds up installation.
• Safety: Integrated earth fault protection (optional) and trip indication increase safety.
• Flexibility: The possibility of expanding with a motor drive and additional auxiliary contacts allows adaptation of functionality to individual needs.
• Solid connections: Screw connection ensures a secure and durable connection of wires.
• Short-circuit capacity: High short-circuit capacity of 50kA at 400V ensures effective protection even in the event of large short-circuit currents.

Additional information: The circuit breaker has a protection degree of IP30, which means protection against contact with fingers and against solid objects larger than 2.5 mm. The possibility of optional mounting on a DIN TH rail increases application flexibility.