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Main image of 300A 12V Bus Bar with 6 x 3/8" (M10) Studs & Cover, Power Distribution Block for Marine Boat Solar RV, 12 Volt Bus Bar Terminal Block Kit with 4 AWG 1/0 & 8 AWG 2/0 Copper Lugs

Alt view image 2 of 7 - 300A 12V Bus Bar with 6 x 3/8" (M10) Studs & Cover, Power Distribution Block for Marine Boat Solar RV, 12 Volt Bus Bar Terminal Block Kit with 4 AWG 1/0 & 8 AWG 2/0 Copper Lugs

Alt view image 3 of 7 - 300A 12V Bus Bar with 6 x 3/8" (M10) Studs & Cover, Power Distribution Block for Marine Boat Solar RV, 12 Volt Bus Bar Terminal Block Kit with 4 AWG 1/0 & 8 AWG 2/0 Copper Lugs

Alt view image 4 of 7 - 300A 12V Bus Bar with 6 x 3/8" (M10) Studs & Cover, Power Distribution Block for Marine Boat Solar RV, 12 Volt Bus Bar Terminal Block Kit with 4 AWG 1/0 & 8 AWG 2/0 Copper Lugs

Alt view image 5 of 7 - 300A 12V Bus Bar with 6 x 3/8" (M10) Studs & Cover, Power Distribution Block for Marine Boat Solar RV, 12 Volt Bus Bar Terminal Block Kit with 4 AWG 1/0 & 8 AWG 2/0 Copper Lugs

Alt view image 6 of 7 - 300A 12V Bus Bar with 6 x 3/8" (M10) Studs & Cover, Power Distribution Block for Marine Boat Solar RV, 12 Volt Bus Bar Terminal Block Kit with 4 AWG 1/0 & 8 AWG 2/0 Copper Lugs

Alt view image 7 of 7 - 300A 12V Bus Bar with 6 x 3/8" (M10) Studs & Cover, Power Distribution Block for Marine Boat Solar RV, 12 Volt Bus Bar Terminal Block Kit with 4 AWG 1/0 & 8 AWG 2/0 Copper Lugs

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300A 12V Bus Bar with 6 x 3/8" (M10) Studs & Cover, Power Distribution Block for Marine Boat Solar RV, 12 Volt Bus Bar Terminal Block Kit with 4 AWG 1/0 & 8 AWG 2/0 Copper Lugs

Item #: 9SIVV5UM9P6205

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[High-Current 300A Power Distribution Block] Master your electrical system with this heavy-duty 300A 12v bus bar. Featuring a 0.24" (6.1mm) ultra-thickened nickel-plated copper plate, it provides superior conductivity and heat dissipation for high-load equipment. Whether you are building an off-grid solar bank or wiring a massive winch, this power distribution bus bar ensures stable power flow as a premium dc bus bar 12v.
[Massive 3/8" M10 Studs & Heavy Gauge Kit] Built for serious power, the 6 x 3/8" (M10) stainless steel studs handle massive cable torque with ease. This power bus bar package includes 4 x AWG 1/0 and 8 x AWG 2/0 battery terminal bars lugs, plus 12 heat shrinks. It provides an all-in-one 12v distribution block solution for clean, professional-grade connections on any 12 volt bus bar or battery distribution block.
[Multi-Voltage 300V AC / 48V DC Versatility] Engineered for extreme flexibility, this busbar terminal block safely manages systems from 12V to 48V DC and up to 300V AC. Ideal for marine AC panels, industrial machinery, or high-voltage solar arrays, it serves as a robust bus bar 48v or tbd terminal block power hub. This makes it a top choice for dual-system dc distribution busbar and 12v terminal block applications.

Overview

Specs

Reviews

This 300A power distribution block features a 0.24" nickel-plated copper plate for max conductivity and heat dissipation. Six M10 stainless steel studs handle high-torque cabling. Kit includes 4 x AWG 1/0 and 8 x AWG 2/0 lugs plus 12 heat shrinks. Works with 12V48V DC and 300V AC systems. Marine-grade, corrosion-resistant, with a 180° protective cover. Perfect for solar, marine, and automotive applicationsclean, safe, and reliable.

Additional Information
First Listed on Newegg	October 29, 2026

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Return for refund within: 30 days
Return for replacement within: 60 days
This item is covered by Temonick shop Return Policy

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Item#: 9SIVV5UM9P6205