Description: Open circuit protection: When the current reaches the disconnection value, the long handle will automatically open to cut off the power supply. Generally, it will be opened in the case of short circuit. After the fault is eliminated, press the long handle back to the original position to form a path. Manual power-off: We need to disconnect the circuit when refitting, and directly press the oval red button on the fuse. At this time, the long handle automatically open to cut off the power. Connect the same as above, and then press the long handle back to its original position. How to use: 1) Wiring IN (BAT) incoming wire, OUT (AUX) outgoing wire. 2) Press the oval button, the long handle open, and the circuit breaker is powered off. (Be sure to press the elliptical button, if the power is cut off by directly pressing the long handle, the circuit breaker will be broken). 3) After resetting the open long handle, the circuit breaker is energized. Size Chart: Size(approx): 80mm (L) x 50mm (W) x 4mm (H) Package Includes: 1 Piece In-Line CIRCUIT BREAKER