Power switch with thermal-magnetic trip unit with built-in residual current device DPX3 250+BL.R 4P 160A 36kA 420257

Power switch with protection – reliable installation protection

This four-pole DPX3 250+BL.R power switch with a rated current of 160A and a short-circuit breaking capacity of 36kA is a key element of protection in demanding electrical installations. Designed by Legrand, it combines the functions of an overcurrent and residual current circuit breaker, providing comprehensive protection against overloads, short circuits and electric shock. It is ideal for both industrial installations, public buildings and homes with higher power demand.

Functionality and safety in one device

The DPX3 switch is not only a protective element, but also a convenient mounting solution. Mounting on a TH rail is quick and intuitive, which translates into time savings during installation. The built-in undervoltage release further increases system safety, protecting against the effects of voltage drops. Integrated short-circuit to earth protection minimizes the risk of electric shock. The tripping indicator allows for quick identification of the device status and location of any failure.

Characteristics and application

The switch is characterized by a C characteristic, which means a delayed response to short-term current surges. Thanks to this, it is perfectly suited for protecting circuits with receivers with a high starting current, such as motors or heat pumps. The setting range of the overload release (128-160A) and short-circuit release (800-1600A) allows for precise adjustment to the specifics of the protected installation. The rated continuous current of 160A ensures stable operation even under heavy load. Screw connection of the main contacts guarantees a secure and durable connection of the wires. Protection class IP30 protects against contact and the ingress of solid objects above 2.5 mm.