Knowledge

1. When the melt melts, it is necessary to carefully analyze the reasons for the melting, which may include: (1) Normal fusing due to short circuit fa

Given the excellent short-circuit protection performance of fuses, they are widely used in high and low voltage distribution systems, control systems,

In low-voltage distribution systems, fuses are a type of electrical appliance that plays a safety protection role. Fuses are widely used for power gri

In order to prevent the occurrence of over level fuses and expand the scope of accidents, there should be good coordination between the fuses of the u

Fuses can be divided into high-voltage fuses and low-voltage fuses based on the voltage used. According to the protection object, it can be divided in

1. When protecting smooth loads without starting process, such as lighting circuits, resistors, electric furnaces, etc., the rated current of the melt

The rated current of the melt is not equal to the rated current of the fuse. The rated current of the melt is selected based on the load current of th

Plug-in fuse: It is commonly used at the end of lines with voltage levels of 380V and below, as a short circuit protection for distribution branches o

An electrical device that uses metal conductors as a melt in series in a circuit. When overload or short circuit current passes through the melt, it m

Fuse refers to an electrical device that uses the heat generated by itself to fuse the melt and disconnect the circuit when the current exceeds the sp

The closing bounce time of a circuit breaker is the time from the beginning of contact when the circuit breaker is closed, followed by separation, whi

When there is no external force, the moving contact generates a closing force on the inner cavity under atmospheric pressure to close it with the stat