Product Name:392 Square Fuse
The role of fuse: mainly plays the role of overcurrent protection, if the load current is too large, beyond the scope of the fuse, the fuse will be broken, thus cutting off the circuit to protect the equipment.
Method to distinguish the quality of fuse: fuse with a multimeter diode file test, can pass is good, can not pass is bad.
Note: before buying the fuse, please check whether there are other problems in the circuit. Normally, the fuse plays a role in connecting the circuit. Therefore, if the fuse fails to work properly after the replacement or the fuse is blown in a short time, check whether the circuit of the device is short-circuited.