Power switch with thermal-magnetic trip unit DPX3 250 4P 250A 25kA 420219

Power circuit breaker – reliable protection for electrical installations.

This four-pole power circuit breaker with a thermomagnetic trip unit DPX3 250 is a key element of every safe and efficient electrical installation. Designed by Legrand, a renowned manufacturer of electrical installation solutions, it guarantees effective protection against overloads and short circuits. Its solid construction and high short-circuit breaking capacity (25 kA) make it an ideal choice for both demanding industrial installations and advanced systems in commercial and residential buildings.

Functionality and technical parameters

The DPX3 250 circuit breaker is characterized by a continuous rated current of 250A and an overload trip setting range of 200 to 250A. This ensures optimal protection for circuits with high loads. The built-in undervoltage release further increases safety by reacting to abnormalities in the supply voltage. Mounting on a TH rail is simple and intuitive, making installation and servicing easier. Equipped with one switching auxiliary contact and two normally closed auxiliary contacts, it enables integration with control and signaling systems.

• Wide rated voltage range: 220-690V – ensures compatibility with various power systems.
• High short-circuit breaking capacity: 25 kA at 400V – guarantees a quick response in the event of a failure, minimizing the risk of damage.
• Possibility of mounting on DIN TH rail: facilitates integration with existing electrical infrastructure.
• Solid screw connections: ensure secure and durable wire connections.
• Trip indicator: allows for quick identification of the circuit breaker status and causes of failure.
• Optional motor drive: enables remote control of the circuit breaker (requires purchasing an appropriate module).

Application and benefits

The DPX3 250 circuit breaker is used in a wide range of electrical installations, including:

• Main distribution boards: as a protective element for the entire installation of a building or industrial facility.
• Motor supply circuits: thanks to its C characteristic, it copes well with high starting currents of electric motors.
• High-power lighting systems: provides reliable protection against overloads and short circuits in extensive lighting systems.
• Industrial installations: ideal for protecting circuits powering machines and production equipment.

By choosing this circuit breaker, you are investing in the safety, reliability and long-term protection of your electrical installation. Its solid construction and high quality workmanship guarantee trouble-free operation for many years. Additionally, the possibility of expanding with a motor drive increases the functionality of the device, enabling remote control and automation of processes.