What do you know about safety circuit breaker?

A safety circuit breaker is an electrical device used to protect circuits and equipment from damage caused by overload or short circuit. By automatically disconnecting the power supply when overcurrent or short circuit is detected, the safety circuit breaker helps to avoid fires and other hazards. If you are not sure whether a particular electrical device has a safety circuit breaker, it is best to consult a qualified electrician.

• How does an safety circuit breaker work?

• What is the function of the safety circuit breaker?

• What is the working principle of the safety circuit breaker?

How does an safety circuit breaker work?

When a current is passed through a conductor, it generates a magnetic field. This magnetic field can interact with the magnetic field of another conductor nearby to produce a force that counteracts the current. This force is called electromotive force or EMF.

The safety circuit breaker works by counteracting the current flow and protecting the circuit if an overload or short circuit occurs. The safety circuit breaker consists of two parts: the sensor coil and the trigger coil. The sensor coil is wrapped around the conductor and detects the magnetic field generated by the current flowing through the conductor. When this field reaches a certain strength, it triggers the trigger coil, which produces a strong magnetic field that counteracts the current and triggers the breaker.

What is the function of the safety circuit breaker?

The safety circuit breaker can be used to distribute electrical energy, rarely start asynchronous motors, protect power lines and motors, etc. and can automatically interrupt the circuit in case of severe overload, short circuit and undervoltage failure, and its function is equivalent depending on fuse type combination of switches and overheating and underheating relays, etc. In addition, there is generally no need to replace parts after the residual current is interrupted. At present, the safety circuit breaker is widely used.

What is the working principle of the safety circuit breaker?

The working principle of the safety power switch is that in the event of a short circuit, the magnetic field generated by the large current overcomes the reaction spring, the trigger pulls the actuation mechanism, and the switch immediately triggers. When overloaded, the current becomes larger, the calorific value intensifies, and the bimetal sheet deforms to a certain degree to move the mechanism for moving. The greater the current, the shorter the exposure time. The safety circuit breaker is an electronic type that uses a transformer to collect the current of each phase and compare it with the set value. If the current is abnormal, the microprocessor sends a signal so that the electronic trigger drives the actuation mechanism.

JIELI Electrical has been active in the low voltage circuit breaker industry for almost twenty years. Dedicated to research and development, production and supply chain management of MCB, RCCB and related supporting products. It is not only a production service provider solving supply chain problems, but also a manufacturer offering OEM and ODM production services.