Power switch with electronic trip unit with built-in residual current device with measurement functions DPX3 250 EL+P+BL.R4P 250A 25kA 420429

Power circuit breaker with residual current device – reliable installation protection

This four-pole DPX3 250 EL+P+BL.R power circuit breaker, with a rated current of 250A and a short-circuit breaking capacity of 25kA, is a key element of every modern electrical installation. Designed for both domestic and industrial applications, it provides comprehensive protection against overloads, short circuits and electric shock. The built-in residual current device (RCD) further increases safety.

Functionality and technical parameters

This circuit breaker stands out with its advanced functionality thanks to the built-in electronic trip unit. It allows for precise setting of the overload current value in the range of 100 to 250A, adapting the operation to the specific needs of the installation. Additionally, it has an integrated short-circuit to ground protection, which is particularly important in environments with an increased risk of electric shock. The trip indicator informs about the operation of the protection, making it easier to locate and eliminate the cause of the failure. Mounting on a TH-35 rail is quick and intuitive, which translates into time savings during installation.

Construction and mounting:

• Device designed for permanent mounting, which guarantees stability and reliability of operation.
• Connection of main circuits is made using screw connections – a proven and safe method.
• Optional mounting on a DIN TH rail further increases installation flexibility.
• The circuit breaker has one normally open and one normally closed auxiliary contact, which allows integration with control and signaling systems.

Applications:

• Protection of electrical circuits in residential, commercial and industrial buildings.
• Use in main and sub-distribution boards.
• Ideal for protecting circuits powering devices with high power consumption, such as heat pumps or heating furnaces.
• Provides effective protection against the effects of short circuits and overloads in installations with a rated voltage from 220 to 690V.

Why choose this circuit breaker?

• Comprehensive protection: Protection against overloads, short circuits and electric shock thanks to the built-in RCD.
• Precision settings: Adjustable overload trip unit allows you to adapt the parameters to specific installation needs (range 150-2500A for the short-circuit trip unit).
• High reliability: Solid construction and the use of high-quality materials guarantee long-lasting and trouble-free operation.
• Easy installation: Quick mounting on a TH-35 rail saves time and installation costs.
• Safety: Trip indicator facilitates identification of the cause of failure and quick response.