Blue Sea Systems 2719 Insulating Cover - Clear Polycarbonate

In this review of the Blue Sea Systems 2719 Insulating Cover, the bottom line is straightforward: it is a purpose-built protective cover for MaxiBus busbars that prioritizes safety and clean installation. The reviewer found it especially useful for marine and solar electric wiring where meeting ABYC insulation requirements and keeping connections visible are both important. Installation is straightforward and the combination of a reinforced nylon base with a clear polycarbonate cover makes it easy to inspect terminals without removing the cover.

Key Features

• Fits MaxiBus: Designed specifically for MaxiBus busbars using either the 6-screw 2128 or 4-stud 2127 fastening options, ensuring a secure fit for common layouts.
• Mounting for accessories: Includes dedicated mounting holes for 285 Series surface mount circuit breakers and DC shunts so additional components can be integrated neatly.
• Durable materials: The reinforced nylon base and clear polycarbonate cover provide impact resistance and long-term durability in demanding environments.
• Breakout insulation: Insulating breakouts maintain superior electrical insulation while allowing organized routing of multiple conductors.
• Standards compliant: Meets ABYC insulation requirements, giving installers confidence the cover satisfies marine electrical safety guidelines.

Who It's For

The 2719 Insulating Cover is best for boat owners, marine electricians, RV and solar installers who use MaxiBus busbars and need a compact, standards-compliant cover that still allows visual inspection. It suits projects where multiple grounds or distribution points are consolidated and where a clear cover helps verify connections without disassembly.

Those who should look elsewhere include users with non-Maxibus busbars or custom busbar assemblies that do not match the 2128 screw or 2127 stud spacing, or anyone needing a fully sealed, waterproof enclosure rather than a protective insulating cover with breakouts.

Pros & Cons

Pros

• Clear cover lets installers inspect terminals without removing the shield, saving time during checks.
• Solid construction and reinforced nylon base result in a sturdy, long-lasting protective assembly.
• Mounting holes for 285 Series breakers and DC shunts make integrating accessory components neat and practical.
• Meets ABYC insulation requirements, a key plus for marine applications where standards matter.

Cons

• Not a waterproof or fully sealed enclosure, so it is not intended as a replacement for a weatherproof box in exposed locations.
• Compatibility limited to MaxiBus configurations that match the 2128 or 2127 fasteners, so it is not universal.

Specifications

Our Verdict

The Blue Sea Systems 2719 Insulating Cover is a practical, well-made protective solution for anyone using MaxiBus busbars who needs visible, standards-compliant insulation and tidy accessory mounting. It offers solid value for marine, solar, and mobile electrical work where a durable, inspection-friendly cover is preferable to a sealed enclosure.

Frequently Asked Questions

Will this cover fit my MaxiBus busbar?
It fits MaxiBus configurations that use the 6-screw 2128 or 4-stud 2127 fastening patterns; verify your busbar uses one of these options.

Is the cover waterproof?
No, the 2719 is an insulating protective cover with breakouts for wiring and is not intended as a fully watertight enclosure.

Can I mount circuit breakers under the cover?
Yes, there are mounting holes provided for 285 Series surface mount circuit breakers and for DC shunts to integrate accessories neatly.