9911250005

A circuit breaker is a device designed to protect electrical systems from short circuits, electrical overloads, and other potential hazards. The 9911250005 circuit breaker is a two-pole type with a rated current of 50 amperes, a breaking capacity of 3000 amperes and a thermal magnetic release characteristic. It is a combination of thermal and magnetic release and designed in accordance to IEC standard.

Application Field

The 9911250005 circuit breaker is typically used to protect the electrical system from over-current, short circuit and over-voltage. It can be applied to residential, commercial, industrial, and medical setting. It is especially used in the circuits as over-current protection for the motors. This circuit breaker is also suitable for system adopting 380V as well as 220V.

Working Principle

The 9911250005 circuit breaker has a bimetallic strip that is temperature-sensitive and is used as an overload protection element. This bimetallic strip helps to detect the current overloads and transfer the overloads into heat, and the heat will make the strip to expand. This expansion of the bimetallic strip will cause the connected system to trip the circuit breaker. The magnetic release is responsible for short circuit protection as it is designed to measure the motor protective characteristics.

The magnetic release is composed of a coil and an iron plate, the current is flowed around the coil and functions as the magnetic field. When the current is higher than the rated current, the magnetic power will increase and make the iron plate move. The moving of the iron plate will cause the spring shaft to push the switch, in result, the circuit breaker will trip and it will disconnect the circuit.

In conclusion, the 9911250005 circuit breaker is designed to provide protection from short circuits, electrical overloads, and other potential hazards. It is suitable for a wide range of applications and is easy to install. It is particularly useful in motors as it provides both thermal and magnetic protection.