What they have in common is that they can all achieve short-circuit protection. The principle of the fuse is to use the current flowing through the conductor to heat the conductor. After reaching the melting point of the conductor, the conductor melts, so the circuit is disconnected to protect the electrical appliances and lines from being burned. It is an accumulation of heat, so overload protection can also be achieved. Once the melt burns out, the melt must be replaced.
Circuit breakers can also realize short-circuit and overload protection of lines, but the principle is different. It realizes circuit breaking protection through the bottom magnetic effect of the current (electromagnetic tripper), and realizes overload protection through the thermal effect of the current (not fusion, and there is no need to replace the device in most cases). . In practice, when the electrical load in the circuit is close to the load of the fuse used for a long time, the fuse will gradually heat until it blows. As mentioned above, the blowing of the fuse is the result of the combined action of current and time to protect the line. It is a one-time event. The circuit breaker is a sudden increase in the current in the circuit. When the load of the circuit breaker is exceeded, it will automatically disconnect. It is a protection for the circuit when the current increases instantaneously, such as when there is a large leakage, or a short circuit, or an instantaneous current. Protection when very large. When the cause is found out, it can be closed and continued to be used. As mentioned above, the blowing of a fuse is the result of the combined action of current and time, while a circuit breaker will trip as soon as the current exceeds its set value, and the effect of time can be almost ignored. Circuit breakers are commonly used components in low-voltage power distribution today. There are also some places where fuses are suitable.
Zhejiang XinLi Fuse Company Limited, located in the "China Electric Capital"---Yueqing City, Zhejiang Province,where have convenient transportation、advanced logistics、perfect appliance chain.And our predecessor company is Yueqing SanLi Fuse Factory,which founded in 1998, promoted to be Zhejiang Xinli FuseCompany Limited in 2009,is a professional fuse supplier specialized in developing,producing,trading and servicing.
