DPX3 circuit breaker 250 HP 3P 100 A 50 kA 423068

Three-pole circuit breaker – reliable protection for installations

This DPX3 250 HP circuit breaker is a robust solution for protecting electrical circuits with a rated current up to 100A. Designed for use in installations with voltages ranging from 230 to 690V, it provides effective protection against overloads and short circuits. A short-circuit breaking capacity of 50kA at 400V ensures safety even during high surge currents.

Design and functionality

The breaker features a fixed-mount design, ensuring stability and reliable operation. It includes two reversible auxiliary contacts that enable integration with control and signaling systems. An off indicator allows for quick identification of the breaker’s status, simplifying diagnostics and maintenance. Connections are made via bolted terminals, guaranteeing secure and durable wiring.

Characteristics and applications

The DPX3 250 HP breaker has a characteristic C curve, meaning it responds more slowly to brief current surges—this is particularly important when connecting electric motors, which generate high inrush currents. The adjustable overload trip range (80-100A) and short-circuit trip range (500-1000A) allow precise tuning of protection to match the specific requirements of the protected circuit. An IP30 protection rating safeguards against contact and ingress of solid objects, making it suitable for industrial and commercial environments. Optional motorized drive installation enhances user comfort and enables remote control of the breaker.