Blue Sea Systems MaxiBus Insulating Cover, for 2105 & 2126

Overview

The Blue Sea Systems 2718 is an insulating cover for Blue Sea MaxiBus 2105 and 2126 busbars. It adds a protective barrier over the connection area, includes breakouts for wire routing, and meets ABYC insulation requirements. The base is reinforced nylon, the cover is clear polycarbonate, and the overall length is 8.78 in. (223.1 mm).

On a boat, this is the part that helps finish a high-current DC busbar installation so exposed positive connections are not left open in a battery compartment, electrical locker, or service space where tools and loose gear can make contact. It is a fit-specific accessory, so the busbar part number matters more than the general layout of the panel.

Key features

• Fits Blue Sea MaxiBus 2105 and 2126 busbars
• Breakouts allow wire runs to enter and exit while keeping terminals covered
• Meets ABYC insulation requirements for protected connections
• Reinforced nylon base with a clear polycarbonate cover
• Mounting pattern includes four holes for #10 or M5 pan head screws

Compatibility and fit

This cover matches the layout used on Blue Sea MaxiBus 2105 and 2126 busbars. Checking the part number on the installed busbar before ordering is the safest way to confirm fit, especially when a boat has been rewired or the original installation notes are incomplete.

Because this is a protective cover and not the busbar itself, it does not change current rating or system capacity. Its job is to shield the connection points while still leaving room for cable routing and label placement.

Installation and setup

The cover fastens over the busbar assembly and uses four mounting locations. Planning cable entry before tightening it down helps keep the breakouts aligned with the wire runs already landed on the busbar, which makes the finished installation cleaner and easier to service later.

This is a practical add-on for battery distribution areas, inverter and charger feeds, and other high-current DC points where the busbar stays accessible for inspection but should not remain exposed.

Use on board

This cover is a good match for owners and installers cleaning up an exposed distribution point during a refit, replacing missing insulation after service work, or finishing a new DC power layout. It makes the most sense anywhere a MaxiBus is mounted close to stored gear, battery cabling, or routine maintenance access.