300A 12V Bus Bar, Heavy Duty Power Distribution Block, Waterproof Marine Battery Terminal Block Bus Bar with 4X 3/8" M10 Studs for Car Marine RV Solar Wiring, Positive + Negative

Heavy Duty: 300A 12V bus bar works up to 48V DC and up to 300V AC @ 12V, including one red positive bus and one black negative (ground) bus for clean separation of power and groundRobust & Wide Use: Each bus bar 12V has 4 × 3/8" (M10) stainless steel stud posts and nuts — accepts large lugs including 4/0 gauge wires and terminals, coupled with nickle-plated pure-copper bus bar plates and flame‑retardant nylon PA66 housingThick copper bar: 7mm thick copper bus plate of the power distribution block provides low resistance and reliable current carrying capacityFlexible Wiring: Marine battery terminal block features an enclosed design with 6 removable windows on four sides — allows routed wires, easy access for larger cables, and reduces risk of short circuitsNeat, professional installations: 12V bus bar power distribution block keeps wiring tidy, simplifies distribution for batteries, alternators, inverters, solar arrays and accessory circuitsBus bar 12V power distribution block is great for automotive & truck electrical systems; waterproof marine & boating battery banks and accessory wiring; RV power distribution and inverter systems; solar & off‑grid battery banks and DC combiner panels; fleet, industrial and heavy equipment power routing, moreSpecificationsMaterial: nickel‑plated copper bus plates, stainless steel studs and nuts, nylon PA66 housingColor: Red (positive) + Black (negative)Current rating: 300AVoltage rating: Up to 48V DC; up to 300V AC @12VStud: 3/8" (M10)Dimensions: 5.43"×2.67"×1.96" / 138×68×50mmWhat’s in the Box1 × Positive Power Distribution Block1 × Ground/Negative Power Distribution Block8 × Assembling Screws for Covering8 × Mounting Screws for Securing

• Heavy Duty: 300A 12V bus bar works up to 48V DC and up to 300V AC @ 12V, including one red positive bus and one black negative (ground) bus for clean separation of power and ground
• Robust & Wide Use: Each bus bar 12V has 4 × 3/8" (M10) stainless steel stud posts and nuts — accepts large lugs including 4/0 gauge wires and terminals, coupled with nickle-plated pure-copper bus bar plates and flame‑retardant nylon PA66 housing
• Thick copper bar: 7mm thick copper bus plate of the power distribution block provides low resistance and reliable current carrying capacity
• Flexible Wiring: Marine battery terminal block features an enclosed design with 6 removable windows on four sides — allows routed wires, easy access for larger cables, and reduces risk of short circuits
• Neat, professional installations: 12V bus bar power distribution block keeps wiring tidy, simplifies distribution for batteries, alternators, inverters, solar arrays and accessory circuits
• Bus bar 12V power distribution block is great for automotive & truck electrical systems; waterproof marine & boating battery banks and accessory wiring; RV power distribution and inverter systems; solar & off‑grid battery banks and DC combiner panels; fleet, industrial and heavy equipment power routing, more