Power switch with electronic trip unit with built-in residual current device DPX3 250 EL+BL.R 4P 250A 50kA 420389

Residual Current Circuit Breaker with Overcurrent Protection – reliable installation protection

This four-pole DPX3 250 EL+BL.R circuit breaker is an advanced solution for protecting electrical installations. It combines the functions of an overcurrent circuit breaker and a residual current device (RCD), providing comprehensive protection against overloads, short circuits and electric shock. A rated continuous current of 250A and a high short-circuit breaking capacity of 50kA (at 400V) guarantee effective operation even in demanding conditions.

Design and application

The circuit breaker is designed for mounting on a TH rail, which simplifies its installation and replacement. The solid, stationary construction ensures durability and reliable operation for a long time. The possibility of connecting main contacts using screw connections facilitates integration with existing electrical infrastructure. A built-in undervoltage release further increases safety. Thanks to the possibility of mounting a motor drive, the circuit breaker can be remotely controlled, which is particularly useful in building or industrial automation systems.

Advantages and benefits for professionals and users

• Comprehensive protection: Combining the functions of an overcurrent circuit breaker and an RCD in one device simplifies installation and ensures complete safety.

• Parameter adjustment: The ability to adjust the rated differential current (0.03 - 0.3 - 1 - 3 A) and the time delay of disconnection (0 - 0.3 - 1 - 3s) allows for precise adaptation to the specifics of the protected installation.

• High short-circuit breaking capacity: A short-circuit breaking capacity of 50kA at 400V ensures effective disconnection of the circuit in the event of a short circuit, minimizing the risk of damage and fire.

• Installation flexibility: The possibility of mounting on a TH rail and optional mounting on a DIN TH rail provide a wide range of applications in various types of installations.

• Trip indicator: A built-in trip indicator makes it easier to identify the cause of the circuit disconnection, speeding up the diagnosis and repair process.

• Overload release setting range: Adjustment in the range of 100-250A allows you to match the characteristics to the load.

• Time-delayed short-circuit release: A setting range of 150 to 2500A allows precise setting of protection against the effects of sudden current surges.

• Compliance with standards: The device meets the requirements of IEC 60947-2 standard, which guarantees its safety and reliability.

This circuit breaker is an ideal solution for both professional installers looking for a reliable and versatile device for protecting electrical installations, and for end users who value safety and comfort of use.