Moulded case circuit breaker with thermal-magnetic trip unit DPX3 250 3P 250A 50kA 420269

Power switch DPX3 – reliable protection of electrical installations

The DPX3 power switch with thermal-magnetic trip unit is an element providing effective protection of electrical circuits against overloads and short circuits. Designed for use in both residential, commercial and industrial buildings, it is characterized by high reliability and durability. The 3P model with a rated current of 250A and a short-circuit breaking capacity of 50kA is a solid solution for demanding installations.

Design and functionality

The DPX3 switch has been designed with easy mounting on a TH rail in mind, which significantly speeds up installation work. Its compact dimensions allow for saving space in the switchgear cabinet. Connection of wires is made using screw connections, which ensures a secure and durable connection. The built-in thermal-magnetic trip unit protects the installation against the effects of overloads and short circuits, and also allows you to adjust the tripping characteristics to the specifics of the protected circuit. This ensures that the device reacts quickly to sudden changes in current, minimizing the risk of damage and fires.

• Three-pole (3P) design provides protection for all phase conductors in the circuit.
• Rated current of 250A is ideal for protecting circuits with high power consumption.
• Short-circuit breaking capacity of 50kA guarantees effective disconnection of the circuit in the event of a short circuit with high energy.
• Thermal-magnetic trip unit provides comprehensive protection against overloads and short circuits.
• Mounting on a TH rail facilitates and speeds up installation.
• Trip indicator allows for quick identification of the switch status.
• Overload trip setting range 200…250A allows precise adjustment to installation needs.
• Adjustable delayed short-circuit trip range 1250…2500A allows adaptation to the load characteristics.

Application and compliance with standards

The DPX3 switch finds application in a wide range of electrical installations, including:

• Main and distribution switchboards
• Protection of lighting and socket circuits
• Protection of electric motors
• Industrial and commercial installations

The device meets the requirements of IEC/EN 60947-2 standards, which guarantees its safety and reliability. The IP30 protection class provides protection against accidental contact and the ingress of solid objects larger than 2.5 mm. The switch is designed to operate in the range of rated voltages from 220V to 690V, making it a universal solution for various types of electrical installations. It also has a built-in undervoltage release for added safety.