DPX3 125 HP 3P 25 A 36 kA circuit breaker 423602

Three-phase circuit breaker DPX3 – reliable protection for installations

The DPX3 125 HP breaker is an advanced solution for protecting electrical circuits, designed for both residential and industrial applications. It provides effective protection against overloads and short circuits, ensuring user safety and long-term reliability. This three-pole breaker with a rated current of 25A and a short-circuit breaking capacity of 36kA is ideal for safeguarding a wide range of loads.

Design and functionality

The DPX3 breaker features a robust construction and precise manufacturing. Its fixed-mount design ensures stability and durability under demanding operating conditions. It includes two reversible auxiliary contacts, enabling seamless integration with control and signaling systems. An off-state indicator allows for quick identification of the device’s status. The absence of an integrated undervoltage release and earth fault protection makes it a versatile component that can be tailored to specific installation requirements. Main terminal connections are made via screw terminals, ensuring secure and lasting conductor connections.

Applications and benefits

This breaker is suitable for a broad range of electrical installations—from residential distribution boards to industrial power systems. Its high short-circuit breaking capacity (36kA at 400V) guarantees safe disconnection during faults, minimizing equipment damage and risks to personnel. The adjustable overload trip range (20-25A) allows precise tuning to match load characteristics, while the short-circuit trip range (320-480A) ensures rapid response in critical situations, enabling installers to optimize protection for connected circuits. An IP30 protection rating guards against accidental contact and ingress of solid objects larger than 2.5 mm, enhancing safety across diverse environments.