Blue Sea Systems 2127 250 Amp MaxiBus BusBar, 4 Stud, Tin-Plated Copper

The Blue Sea Systems 2127 is a 250 Amp MaxiBus BusBar built for distributing power across multiple circuits from a single high-capacity connection point. It is constructed from tin-plated pure electrical copper for maximum conductivity and corrosion resistance, mounted on a UL 94-V0 rated base material that resists high heat. The busbar is rated for a continuous rating of 250A AC/DC with a maximum voltage of 300V AC / 48V DC, making it suitable for demanding DC power distribution tasks such as battery banks, panel feeds, and accessory circuits aboard a boat.

The busbar provides 4 isolated circuits and terminal studs sized 6 x 5/16 inch-18, allowing multiple ring terminals to be landed on a common power source without daisy-chaining wires or stacking terminals on a single stud. Two mounting holes accept #10 (M5) screws for secure panel or bulkhead installation. This busbar ships without a cover, so it should be installed with appropriate insulation or enclosure protection in the final installation.

Specifications

• Brand: Blue Sea Systems
• Manufacturer Part Number: 2127
• Product Type: MaxiBus BusBar
• Number of Studs: 4
• Terminal Studs: 6 x 5/16 inch-18
• Max Voltage: 300V AC / 48V DC
• Continuous Rating: 250A AC/DC
• Mounting Holes: 2, accept #10 (M5) screws
• Material: Tin-Plated Copper CDA 110 / UNS 11000, UL 94-V0 rated base
• Number of Circuits: 4
• Weight: 0.8 pounds
• UPC: 782124493332, 796793504244, 632085021276
• Warranty: Lifetime

Frequently Asked Questions

What is the continuous amperage rating of the Blue Sea Systems 2127 MaxiBus BusBar? It carries a continuous rating of 250A AC/DC, with a maximum voltage of 300V AC / 48V DC.

How many circuits does part number 2127 support? The 2127 MaxiBus BusBar supports 4 isolated circuits, each landed on its own terminal stud.

What size are the terminal studs on this busbar? Terminal studs on the Blue Sea Systems 2127 are sized 6 x 5/16 inch-18.

Does the 2127 busbar come with a cover? No, the 2127 ships without a cover, so it should be paired with suitable insulation or an enclosure during installation.

What material is the busbar made from? It is made from tin-plated pure electrical copper (CDA 110 / UNS 11000) on a UL 94-V0 rated base material that resists high heat.

How is the Blue Sea Systems 2127 mounted? Two mounting holes accept #10 (M5) screws for securing the busbar to a panel or bulkhead.

How much does the 2127 MaxiBus BusBar weigh? The 2127 weighs 0.8 pounds.

Is the 2127 rated for both AC and DC use? Yes, it is rated 250A continuous for both AC and DC, with a maximum voltage of 300V AC or 48V DC.

What warranty applies to the Blue Sea Systems 2127? The 2127 MaxiBus BusBar carries a lifetime warranty from Blue Sea Systems.

Why use a copper busbar instead of individual wire splices? The 2127 lets multiple ring terminals land directly on isolated studs, avoiding daisy-chained wires or stacked terminals on a single connection point.