Power switch with electronic trip unit with built-in residual current device with measurement functions DPX3 250EL+P+BL.R 4P 250A 50kA 420489

Residual Current Device (RCD) – Reliable Installation Protection

This four-pole DPX3 250EL+P+BL.R circuit breaker is an advanced solution combining the functions of an overcurrent and residual current device. It provides comprehensive protection for electrical circuits against overloads, short circuits, and leakage currents, minimizing the risk of damage and fires. Ideal for both residential and industrial applications.

Design and Functionality

The circuit breaker is designed for mounting on a TH rail, making installation and replacement easy. It features a built-in electronic trip unit that precisely responds to load changes, ensuring quick and effective intervention in the event of a failure. The integrated residual current protection protects users from electric shock by detecting even small leakage currents. Additionally, the trip indicator informs about the activation of the protection, facilitating problem localization.

Advantages for Installers and End Users

• Versatility: Adjustable rated differential current (0.03 - 0.3 - 1 - 3 A) and time delay (0 - 0.3 - 1 - 3s) allow the protection to be adapted to specific installation needs.
• High Short-Circuit Capacity: Rated short-circuit breaking capacity of 50 kA at 400 V provides effective protection even in the event of high voltage surges.
• Precise Settings: Adjustable overload trip range (100…250 A) and short-circuit trip range (150…2500 A) allow optimal matching to the load characteristics.
• Easy Installation: Design adapted for TH rail mounting and screw connections facilitate and speed up installation.
• Safety: Built-in residual current protection with LCD screen ensures a high level of safety.
• Expandability: Optional motor drive allows for remote control of the circuit breaker.

Specifications and Operating Parameters

The DPX3 250EL+P+BL.R circuit breaker is characterized by a rated voltage range of 220…690 V and has one normally open and one normally closed auxiliary contact – providing additional integration possibilities with control and signaling systems. The IP30 protection degree provides protection against touch and ingress of solid objects. The device is made of high-quality materials, guaranteeing its durability and reliability even in harsh working conditions. It is worth noting the possibility of using an optional motor drive for remote control of the device.