Isolating switch with built-in residual current device, DPX3-I 250+BL.R 4P 250A 420298

Isolating switch with residual current device – reliable disconnection and protection

This DPX3-I 250+BL.R 4P 250A isolating switch is an advanced device combining the function of safe circuit disconnection with a built-in residual current device. It is a key element in electrical installations, providing both safety of use and effective protection against failures. The device's design, intended for mounting on a TH rail, guarantees easy and quick installation in distribution boards.

Functionality and application

This switch, with a rated current of 250A, is perfect for installations with a working voltage of 220 to 690V. Integrated protection against short-circuit to earth and undervoltage release increase the safety and reliability of the entire system. The possibility of using an optional motor drive expands the functionality of the device, enabling remote control. This makes the switch applicable in a wide range of facilities – from residential and commercial buildings to industrial plants.

Construction and characteristic features

The device is characterized by a solid fixed construction, which ensures stability and long-term operation. It has four poles and one changeover auxiliary contact and two normally closed auxiliary contacts, allowing integration with control and signaling systems. The connection of the main circuits is made using screw connections, ensuring secure and durable electrical connections. The IP30 degree of protection protects against touch and access to hazardous live parts. The disconnection indicator facilitates quick identification of the device status. Additionally, the device is adapted for mounting on a DIN TH rail, which increases installation flexibility.