【Circuit Break Protection】-- The protective rubber caps prevent unnecessary short circuits. When the current reaches the breaking value, the long handle automatically springs back and cuts off the power. It typically trips in short-circuit conditions. Once the fault is cleared, push the long handle back into its original position to complete the circuit. 【Power Rating】-- 100A current, 12-48V DC voltage, yellow manual reset button, accessories including 2 wire lugs and 4 copper washers, improve conductivity. This audio circuit breaker auto-reset fuse holder is the ideal replacement for your AGU, ANL, and AFS type fuse holders. 【Manual Power Off】-- When reassembling, disconnect the circuit and press the oval yellow safety button. At this point, the long handle automatically extends to cut off the power. Connect as above, then press the long handle to return it to its original position. Simple and convenient to install on the panel or firewall. 【Waterproof Design】-- IP67 waterproof