What is the definition of safety circuit breakeres?

A safety circuit breaker is a switching device that can close, conduct and interrupt current under normal circuit conditions, and can close, conduct and interrupt current within a specified time under abnormal circuit conditions. Circuit breakers are divided into high voltage circuit breakers and low voltage circuit breakers according to their field of application. The distribution of high and low voltage limits is relatively vague. Generally, devices over 3 kV are referred to as high voltage electrical devices.

• What are the precautions for using a safety circuit breaker?

• What are the characteristics of safety circuit breakeres?

• What is the main function of the safety circuit breaker?

What are the precautions for using a safety circuit breaker?

The total load current is the sum of the branch currents; Knowing the branch current and the total current, you can select the branch circuit breaker and the main current circuit breaker, the main fuse, the main imperimeter and the specifications of the branch wires, or check whether the specifications of the electrical components are met the safety requirements;

In addition: to ensure the safety and reliability of the safety circuit breaker, the rated operating current of the electrical components should generally be greater than double the required maximum load current; In addition, when designing and selecting the safety circuit breaker, it is also necessary to take into account the possibility of a future performance increase in order to leave room for future requirements.

What are the characteristics of safety circuit breakeres?

1.The safety circuit breaker uses the combined funnel clamp to make the wiring simple and reliable. It can be conveniently connected to the busbar, and the capacity of the incoming or outgoing terminal can reach through the additional terminal 35 mm2

2.The contact system uses silver alloy material (silver tin or silver graphite), which really does not achieve fusion welding.

3.The safety circuit breaker uses a fast arc extinguishing system, which consists of a moving contact locking piece, arc pilot plate, magnetic blowing metal piece and metal arc extinguishing grid. In the arc extinguishing chamber there are up to 13-metal gratings, which can quickly extinguish the arc, and the average short circuit off time is only 0.0037 seconds.

4.The energy limit level is higher than stage 3 (the energy value is only 50% of stage 3).

What is the main function of the safety circuit breaker?

1. Control function. This means switching electrical devices or cables on or off depending on the operating requirements.

2. Protective effect. That is, when the power device or line fails, the relay protection and automatic device act on the circuit breaker to quickly remove the faulty part from the power grid to ensure the normal operation of the non-faulty part of the power grid.

JIELI Electrical has been active in the low voltage circuit breaker industry for almost twenty years. It is not only a production service provider solving supply chain problems, but also a manufacturer offering OEM and ODM production services.