- High conductivity and safety: tin-plated pure electric copper distribution block bus for maximum conductivity and safety. Reinforced fireproof ABS base provides strong mechanical support. Stainless steel bolts and nuts improve corrosion and rust resistance in saltwater or corrosive environments. - Electrical rating: rated current 100 A; max voltage 48 V DC. Black is connected to the negative pole, red to the positive pole. - Flexible wiring configuration: durable busbars with 4x M5 (3/16 inch 24) bolt terminals and many connection points for multiple wiring configurations. - Easy installation: surface mounting design with 2 mounting holes for screws M5. - Wide compatibility: suitable for power systems from 12 V to 48 V DC in RVs, solar setups, cars, trucks, yachts, boats, and more. Useful for consolidating, distributing, or protecting electrical systems and organizing wiring harnesses. - Cable compatibility: designed for 100 A and M5 threaded bolts. Any gauge cable can be used as long as the terminal end has an M5 lug and the total current of all connected wires does not exceed 100 A.