250V Fuse Block Class t Fuse Holder with 300 AMP Fuse, DC250V Fuse Block 300A Class t Fuse Holder for Inverters and Car Stereos High Power Appliances in RVs, Boats, Cars, Trucks. When the circuit is faulty or abnormal, the fuse will be in the current abnormal rise to a certain degree, the current itself will be blown off, so as to protect the safe operation of the circuit.
