Motor starter with thermal and electromagnetic trip unit with neutral track N M250 (0.63A - 1A) 606804

Motor and Circuit Protection – M250 Circuit Breaker with Neutral Conductor

This three-pole motor circuit breaker with thermal and electromagnetic trip unit provides reliable protection for electric motors. It effectively protects against the effects of short circuits and overloads, protecting both the motor and the entire circuit. The design with a neutral conductor N expands the possibilities of use in various installations.

M 250 circuit breakers are designed to protect electric motors, but they are also suitable for circuits where short-term, significant loads may occur during normal operation. Various designs are available, including models with a thermal, electromagnetic trip unit, or a combination of both – this particular model combines the advantages of both types.

Functionality and technical parameters

The circuit breaker is characterized by a rated current of 1A and a setting range for the overload trip unit from 0.63A to 1A. The rated power at 230V is 4.5 kW, and at 400V – 7.5 kW. The rated short-circuit breaking capacity Icu at 400V AC is as high as 6 kA, which guarantees a quick and safe response in the event of a short circuit. The short-circuit trip unit has a setting range from 11.2 to 16.8 A, allowing for precise adjustment to the characteristics of the protected circuit.

The circuit breaker has a protection degree of IP3X, which means protection against contact and the ingress of solid objects larger than 2.5 mm. The connection of the main contacts is made using screw connections, ensuring a secure and durable connection of the wires. The lever serves as an actuator for manual switching on and off of the device.

Installation and application

The M250 circuit breaker is a complete device in a housing, ready for mounting on a DIN rail. It has a window for describing the installation, which facilitates identification and servicing of the device. It is ideal for both professional installers and end-users looking for reliable protection for their electric motors and electrical installations in residential and commercial buildings.