DPX3 125 HP 3P 125 A 36 kA circuit breaker 423609

Advanced protection of electrical circuits with DPX3 circuit breaker

The DPX3 125 HP is a three-pole device designed to protect electrical installations against overloads and short circuits. With a rated continuous current of 125 A and a high short-circuit breaking capacity of 36 kA at 400 V, it makes a reliable component in energy distribution systems. The device’s construction, based on robust screw connections, ensures stability and operational safety.

Functionality and applications

This circuit breaker is suitable for a wide range of electrical installations—from industrial facilities and commercial buildings to advanced residential systems. Thanks to the adjustable settings for the thermal overload trip (100–125 A) and magnetic short-circuit trip (1000–1500 A), it can be precisely tuned to meet the specific requirements of each installation. Two reversible auxiliary contacts enhance its functionality, enabling integration with control and signaling systems.

Construction and key features

The device features a rigid fixed-mount construction that guarantees stability and reliable operation. The IP30 protection rating guards against accidental contact and ingress of solid objects, making it suitable for industrial environments. An off-position indicator allows quick identification of the device’s status, signaling when protection has been triggered. The absence of a built-in motor drive and integrated earth-fault protection makes this a classic manual circuit breaker, well-suited for standard applications. The rated operating voltage range of 220–690 V ensures compatibility with various power supply systems.