BEP 777BB4S500 Heavy-Duty Busbar
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BEP 777BB4S500 Heavy-Duty Busbar is a compact 4-stud busbar designed for marine electrical power distribution, providing a robust, modular way to connect and route large cable loads.
Key Features
- Heavy-duty busbar rated for 500A (4 Stud-500A busbar).
- Compact footprint for space-saving panel layouts.
- Clear polycarbonate cover helps protect the busbar on three sides while keeping the system serviceable.
- Snap-out cover sections provide additional cable access as required.
- Tinned CDA102 copper conductors with stainless steel studs, nuts, and hardware intended for longevity in the marine environment.
- Metric-thread construction; stainless-steel studs support secure connections using the appropriate washers and torque during installation.
Product Compatibility
- Marine and RV electrical power distribution panels (busbar/cable lug interconnections).
- DC systems where a heavy-duty, insulated busbar connection is required.
- Use as part of a busbar-based terminal block/power distribution arrangement.
Product Details
- SKU (Shopify variant): 969-777BB4S500
- Amps: 500
- Busbar family/model: BEP/Marinco 777BB4S500
- Stud Size: 4
- Stud size callout (from documentation for this model): 8mm (5/16") stainless steel studs
- Terminal design: busbar for attaching cable lugs to studs and securing with nuts (cover provides insulation/protection).
- Dimensions/footprint (from documentation for 777-BB4S-500 4 Stud, 500A): 3.9" x 1.9" x 2.4"
- Weight (from documentation): 272g
- Cover/installation notes (from documentation): snap-out sections allow additional cable access as required; recommended torque guidance is provided for the 8mm (5/16") studs during installation.
Parts Desk Insights
Best Use Case: Ideal for building or upgrading a marine electrical distribution panel that needs a compact, heavy-duty busbar to connect multiple large cable lugs securely under a protective cover.
Common Issues: Most installation problems come from mismatched lug/stud sizes, missing required washers, or connections not tightened to the recommended torque. Before final assembly, confirm the studs, cable lugs, and cover snap-out sections align with your cable routing plan.
Related Products & Accessories
- Browse Bus Bars & Power Distribution - Explore additional busbars and power distribution components that pair with your panel layout.
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 1-3 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.