Blue Sea Systems 2126 250 Amp MaxiBus BusBar, 6-Stud 5/16-18 Common Bus Bar

The Blue Sea Systems 2126 is a 250 amp MaxiBus BusBar built for consolidating multiple electrical connections onto a single common bus in a boat's DC or AC electrical system. It provides six 5/16-18 terminal studs, giving installers room to gang together battery cables, fuse holders, and circuit leads at one central point instead of stacking connections on a single post. The bus bar is rated for a maximum voltage of 300V AC / 48V DC with a continuous current rating of 250A AC/DC, making it suitable for higher-current distribution points such as battery banks, charging systems, or main power buses.

Construction uses tin-plated pure electrical copper for the conductive bus, which maximizes conductivity while resisting corrosion in the marine environment, mounted on a UL 94-V0 rated base material that resists high heat. The bus bar mounts using two mounting holes sized to accept #10 (M5) screws, allowing it to be secured to a panel, bulkhead, or existing mounting surface. With six studs sharing one continuous bus, every stud is electrically common, so this is a shared bus point rather than a set of isolated circuits. This makes the 2126 a practical choice for consolidating grounds, positive distribution, or bonding points where multiple cables need to land on the same electrical potential.

Specifications

• Brand: Blue Sea Systems
• Manufacturer Part Number: 2126
• Product Name: MaxiBus BusBar, 6 Stud
• Number of Studs: 6
• Terminal Stud Size: 5/16-18
• Maximum Voltage: 300V AC / 48V DC
• Continuous Current Rating: 250A AC/DC
• Mounting Holes: 2, sized for #10 (M5) screws
• Base Material Rating: UL 94-V0
• Conductor Material: Tin-plated pure electrical copper
• Weight: 0.8 pounds
• UPC: 632085021269

Frequently Asked Questions

What is the current rating of the Blue Sea Systems 2126 MaxiBus BusBar? The 2126 MaxiBus BusBar carries a continuous rating of 250A AC/DC with a maximum voltage of 300V AC / 48V DC.

How many terminal studs does the 2126 busbar have? It has 6 terminal studs, each sized 5/16-18, all sharing one common electrical bus.

Are all six studs on the Blue Sea Systems 2126 electrically connected? Yes, all six studs on the 2126 are tied to a single continuous bus, so they share the same electrical potential rather than functioning as isolated circuits.

What size screws are needed to mount the 2126 BusBar? The 2126 has two mounting holes sized to accept #10 (M5) screws.

What material is the Blue Sea Systems 2126 busbar made from? The conductive bus is tin-plated pure electrical copper for maximum conductivity and corrosion resistance, mounted on a UL 94-V0 rated base material that resists high heat.

How much does the 2126 MaxiBus BusBar weigh? The Blue Sea Systems 2126 weighs 0.8 pounds.

What is the UPC for the Blue Sea Systems 2126? The UPC for the 2126 MaxiBus BusBar is 632085021269.

Can the 2126 be used for AC and DC circuits? Yes, the 2126 is rated for both AC and DC use, with a maximum of 300V AC or 48V DC and a continuous rating of 250A AC/DC.

What size cable lugs fit the studs on the 2126? The 2126 uses 5/16-18 terminal studs, so ring terminals or lugs sized for a 5/16 inch stud will fit.

Does the Blue Sea Systems 2126 come with a cover? The 2126 is the bare 6-stud MaxiBus BusBar without a cover.

What is a MaxiBus BusBar used for on a boat? A MaxiBus BusBar like the Blue Sea Systems 2126 is used to consolidate multiple electrical connections, such as battery cables or circuit leads, onto one common terminal point instead of stacking them on a single post.