Power switch with thermal-magnetic trip unit with built-in residual current device DPX3 250+BL.R 4P 250A 25kA 420229

Power switch with protection – installation protection and reliability

This four-pole DPX3 250+BL.R power switch from Legrand is an advanced solution for protecting electrical installations. Designed to operate in networks with a voltage of up to 690V, it provides effective protection against overloads, short circuits and leakage currents. A rated continuous current of 250A and a short-circuit breaking capacity of 25kA guarantee stable operation even in demanding conditions.

Functionality and safety in one device

The switch combines the functions of a thermal-magnetic circuit breaker and a residual current device (RCD), minimizing the risk of electric shock and equipment damage. The built-in short-circuit to ground protection further increases the level of safety. This makes it an ideal solution for both industrial and commercial installations, as well as in residential buildings with high energy demand. The integrated undervoltage release increases resistance to network disturbances.

Installation and application

The device is designed for mounting on a TH rail, which facilitates its installation and replacement. The solid construction and high quality of workmanship guarantee long-lasting and trouble-free operation. The switch from the DPX3 series is used in electrical switchboards, providing protection for circuits powering various types of receivers, such as motors, heaters or lighting. The possibility of optionally mounting a motor drive allows for remote control of the switch. In addition, the presence of auxiliary contacts (normally closed and changeover) enables integration with control and signaling systems. The use of screw connections ensures a secure and durable connection of wires.