400A HEAVY-DUTY CAPACITY FOR HIGH-POWER SYSTEMS Engineered to handle 400A continuous current at 12V-48V DC. This robust power distribution block is the ideal hub for large inverters, high-wattage solar arrays, and demanding marine electrical setups ^^ PREMIUM THICK NICKEL-PLATED COPPER Features a substantial 0.35 inch ( 8.5 mm) thick nickel-plated copper plate. This ensures maximum conductivity, minimal voltage drop, and superior corrosion resistance for long-term reliability in harsh environments. ^^ COMPLETE INSTALLATION KIT WITH 6 COPPER LUGS Comes ready to install with 6 x M8 studs and a professional-grade terminal set: 2pcs 4/0 AWG and 4pcs 1/0 AWG copper lugs. This all-in-one battery bus bar kit eliminates extra trips to the store, saving you time and cost ^^ VERSATILE DC & AC POWER DISTRIBUTION HUB Functions seamlessly as a central 12V distribution block, ground bus bar, or positive rail for systems up to 48V DC and 300V AC. Its design promotes clean, organized wiring in complex RV or boat power systems ^^ MARINE-GRADE DURABILITY & SAFETY COVER Built with a flame-retardant nylon base and a protective cover featuring 180 wiring access. This busbar terminal block is designed to withstand vibration, moisture, and extreme conditions in off-road vehicles and boats