Power switch with electronic trip unit with measurement function DPX3 250 EL+P 3P 250A 25kA 420409

Power circuit breaker with electronic trip unit DPX3 250 EL+P 3P 250A 25kA

This three-pole DPX3 250 EL+P power circuit breaker is an advanced solution for protecting electrical installations. Designed to operate in low-voltage networks, it combines protection, isolation and circuit switching functions. Equipped with an electronic trip unit, it offers precise and reliable response to overloads and short circuits, minimizing the risk of damage and downtime. Ideal for both professional installers and end-users looking for a solid and safe solution.

Functionality and Application

This circuit breaker is used in a wide range of electrical installations – from commercial buildings, through industrial facilities, to advanced energy distribution systems. The possibility of mounting on a TH rail allows for easy integration with existing control cabinets. The built-in undervoltage release further increases system safety, protecting against the effects of voltage drops. This makes the device perfect for places with variable power supply conditions.

The rated continuous current of 250A and the short-circuit capacity of 25kA at 400V provide effective protection against overloads and short circuits, and the adjustable overload trip unit setting range (100…250A) allows you to adapt the operating characteristics to the specific needs of the installation. It is worth noting the possibility of mounting additional DPX3 auxiliary devices, which expands the functionality of the circuit breaker and enables integration with monitoring and control systems.

Characteristics and Construction

The DPX3 circuit breaker is characterized by a solid construction designed for permanent mounting. Screw connection ensures a secure and durable connection of conductors with a cross-section of up to 150mm². The housing with a protection degree of IP30 guarantees protection against contact and against the ingress of solid objects larger than 2.5 mm. The trip indicator facilitates diagnosis of installation problems – it informs about the operation of the protection. Additionally, the presence of a single-pole changeover auxiliary contact (1 pc.) and normally closed auxiliary contacts (0 pcs.) allows you to connect signaling devices or other control devices. Adjustment of the short-circuit trip unit allows for precise adaptation to the load characteristics and protection against unwanted tripping.