DPX3 125 HP 3P 100 A 100 kA circuit breaker 423708

Three-pole circuit breaker DPX3 – reliable protection for installations

The DPX3 125 HP breaker is a robust and efficient device designed to protect electrical circuits in residential, commercial, and industrial buildings. It provides effective protection against overloads and short circuits, ensuring safe operation and minimizing the risk of failures. Its construction, based on proven Legrand technology, guarantees long-term, fault-free performance.

Functionality and specifications

The DPX3 breaker features a continuous rated current of 100A and a high short-circuit breaking capacity of 100kA at 400V. This enables it to handle demanding loads such as electric motors or heating equipment. The adjustable overload trip range (80–100A) allows precise tuning to match the characteristics of the protected circuit. It includes two reversible auxiliary contacts, enabling integration with control and signaling systems.

This breaker also stands out for its solid construction – it is a fixed-mount device, ensuring stability and reliability of connections. Main terminal connections are made via screw terminals, guaranteeing secure electrical contact. The IP30 protection rating guards against accidental contact and ingress of solid objects larger than 2.5 mm. The trip indicator enables quick identification of the device’s status and location of potential faults. The HP (High Performance) trip characteristic makes it ideal for circuits with high inrush currents, as it responds more slowly to brief current surges, allowing smooth operation of motor-driven equipment.

Installation and applications

The DPX3 breaker is designed for installation in electrical distribution boards. Its versatility makes it suitable for a wide range of applications:

• Residential buildings: Protection of lighting, socket, and electrical appliance circuits.
• Commercial buildings: Protection of installations in offices, shops, or warehouses.
• Industrial facilities: Protection of machinery and production equipment against overloads and short circuits.
• Photovoltaic installations: Protection of DC circuits (requires appropriate parameter selection).

Thanks to its high-quality construction and compliance with applicable standards, the DPX3 breaker is an investment in the safety and reliability of electrical installations.