Knife-shaped Contactor For EV Automobile Fuse

Rapid fuse, emphasis on rapid response, in the case of short circuit, can realize the electrical protection of the circuit.The basic composition of the fast fuse is similar to that of the tube fuse with packing.Most of the fast-melting melts are silver or silver alloys. Various cuts are designed on the melt sheets and welding spots of other materials are added at specific locations in the expectation that when the fault current occurs, the heat will be concentrated on several points designed to facilitate short fusing. Fusing also includes full range protection and short circuit protection two applications.Full range protection, overload and short circuit are protected by fast melting, suitable for small power devices or devices with large margin.Short circuit protection: fast melting only for the occurrence of short circuit current protection.In fact, it is very difficult for fast melting to take into account overload delay and short circuit instantaneous. In the high voltage circuit of electric vehicle, we mainly apply fast melting, and the most concerned parameters are its reliability, fusing speed and breaking capacity.



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