Protection Circuit：Fused power distribution block is mainly used to connect the audio system to prevent excessive current and overheating of wires; If the current is too high, the fuse will blow and the circuit will automatically disconnect to protect the equipment Furrules: The power distribution block car audio will come with furrules to expand its capacity. Input hole: 0, 2, 4 gauge; Output hole: 4, 6, 8 gauge ANL Fuse：MIDI fused distribution block with 2 x 30A, 2 x 60A and 2 x 80A mini ANL fuses provides more options for different situations Red LED Indicator: Car audio distribution block box is equipped with a red LED indicator that lights up when a fuse has blown, providing a quick check for troubleshooting and maintaining the fuse box Application：4 way fuse box distribution block is suitable for the amplifier or audio stereo system of car, boat, car, truck, marine, etc Protection Circuit：Fused power distribution block is mainly used to connect the audio system to prevent excessive current and overheating of wires; If the current is too high, the fuse will blow and the circuit will automatically disconnect to protect the equipment Furrules: The power distribution block car audio will come with furrules to expand its capacity. Input hole: 0, 2, 4 gauge; Output hole: 4, 6, 8 gauge ANL Fuse：MIDI fused distribution block with 2 x 30A, 2 x 60A and 2 x 80A mini ANL fuses provides more options for different situations Red LED Indicator: Car audio distribution block box is equipped with a red LED indicator that lights up when a fuse has blown, providing a quick check for troubleshooting and maintaining the fuse box Application：4 way fuse box distribution block is suitable for the amplifier or audio stereo system of car, boat, car, truck, marine, etc