Power switch with electronic trip unit with built-in residual current device DPX3 250 EL+BL.R 4P 250A 25kA 420329

Power circuit breaker with residual current device – reliable installation protection

This four-pole DPX3 250 EL+BL.R power circuit breaker is an advanced solution combining the functions of an overcurrent and residual current device. It provides comprehensive protection of electrical circuits against overloads, short circuits and electric shock. It is an ideal choice for both installers and end-users who value safety and reliability.

Functionality and application

This circuit breaker is designed for mounting on a TH rail and is characterized by a high short-circuit breaking capacity (25 kA at 400 V). The built-in electronic release with adjustment in the range of 100-250A allows for precise adaptation to the load characteristics. In addition, the integrated residual current protection increases the level of safety. It will be useful in building, industrial installations and in public utility facilities where high reliability and protection against failures are required.

Key features and benefits

• Comprehensive protection: combination of overcurrent and residual current device functions in one device – saving space and costs.
• Current adjustment: the setting range of the overload release (100-250A) allows adaptation to the specifics of the load, protecting against unnecessary tripping of the device.
• High short-circuit breaking capacity: 25 kA at 400 V guarantees effective protection of the installation in the event of a short circuit.
• TH rail mounting: facilitates and speeds up installation, and also ensures stable mounting of the device.
• Trip indicator: informs about the operation of the circuit breaker, making it easier to locate the problem in the event of a failure.
• Solid connections: screw connection ensures a secure and durable connection of the wires.
• Expandability: optional mounting of a motor drive and additional auxiliary contacts increases the functionality of the device.
• Compliance with standards: the product meets strict safety standards, providing users with peace of mind.

Construction and parameters

The DPX3 circuit breaker is characterized by a solid construction and high quality workmanship. It has a protection class of IP30, which provides protection against accidental contact and against the ingress of solid objects larger than 2.5 mm. Thanks to the use of advanced technologies, the device is resistant to atmospheric conditions and ensures long-lasting and trouble-free operation. The rated continuous current is 250A, which makes it suitable for applications requiring a high load. In addition, the presence of a single-pole changeover auxiliary contact (1 piece) allows connection of additional signaling or control devices.