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BEP Marine

777-BB3S-650-B

HD 3-pin busbar 650 A MC10

The BEP HD 3 Stud 650A busbar is designed for high-current electrical distribution, with a 650A capacity and three 10mm studs. Part of the Pro Installer series, it offers modular integration and a robust tinned copper construction.

This busbar is supplied with its stainless steel studs, nickel-plated brass nuts, and stainless steel washers.

Price excl. import taxesBenefit from the professional rate

$82.00 USD

$82.00 USD ~~$101.00 USD~~

Shipping calculated at checkout.

Prices exclude import taxes. DAP delivery: import taxes are paid on delivery.

Low stock

Free pickup point from €150 in France
Pickup at Skysat possible

Custom installation

Trust Skysat to install the equipment on board

Request a quote

Installers near you

thanks to our network of approved installers

Find an installer

Support service

Opt for additional installation assistance

Technical specifications

Nominal voltage	50
Amperage	650.0
Number of circuits	3.0
Number of poles	Unipolar
Supported battery banks	3.0
Circuit protection method	Supports external circuit breakers and fuses
CZone compatible	Oui
Mounting type	Surface mounting
Display type	None
Wired network	None
Maximum cable lug size	10 mm
Weight	0.5
ABYC compliance	Oui
Application Environment Detail	Marine and industrial applications
Base height	32
Base Material Reinforcement	Fibers
Busbar application type	Marine
Busbar base material	Reinforced fiber material
Busbar Base Material Properties	Resistant to high temperatures and marine chemical products
Busbar conductor material	Tinned copper
Busbar Material Finish	Tinned
Busbar type	High intensity
Cable Entry Customization Method	Removable side panels
Cable entry type	Side
Cable Routing Flexibility	Yes
Cable routing optimization	Rounded ends
Chemical resistance	Yes
Color	Black (base), Transparent (cover)
Conductor construction	Durable
Conductor Material Grade	CDA102
Conductor Material Plating	Tinned
Corrosion resistance	Yes
Cover included	Oui
Cover material	Polycarbonate
Cover Protection Sides	3
Cover Removable	Yes
Cover transparency	Transparent
Current type	DC
Electrical Isolation	Yes
Fastener material	Stainless steel, nickel-plated brass
Included fastener type	Bolts, nuts, washers
Flame retardant	Oui
High Temperature Resistance	Yes
Link bar design type	Single lever
Link bar overall length	98.0
Marine grade	Yes
Max Cable Lug Count Per Stud	4
Horizontal mounting hole spacing	114
Overall height mm	50
Overall length mm	138
Overall width mm	69
Product Model	777-BB3S-650
Product range	Pro Installer
Product type	High-intensity bus bar
Recommended terminal torque (Nm)	15.0
Space-saving design	Yes
Number of studs	3.0
Stud Height Mm	18
Stud size (mm)	10
Stud Thread Type	Long threaded studs
Number of terminals	3.0
Terminal thread size (mm)	10

Detailed description

Designed for robust power distribution in marine and industrial applications, the BEP HD 3 Stud 650A busbar (model 777-BB3S-650) is a key component of BEP’s Pro Installer series. This busbar is intended for handling high currents, ensuring reliable connections for demanding electrical systems.

Performance and Construction

The BEP HD 3 Stud 650A busbar is rated for a maximum current of 650 amperes and a continuous voltage of 50V DC. It features three 3/8" (10mm) diameter studs designed to accommodate large cable lugs. The conductor is made of tinned CDA102 copper, chosen for its conductivity and corrosion resistance. The base is reinforced with fiber material, resistant to high temperatures and marine chemicals, while the three-sided transparent polycarbonate cover provides insulation and visibility of connections. Fasteners, including studs, nuts, and washers, are made of stainless steel and nickel-plated brass for durability in marine environments.

Design and Integration

This busbar features a compact design that optimizes installation space, an advantage in confined areas aboard vessels. Removable side skirts allow for additional cable entries, offering greater flexibility during wiring. The rounded ends of the busbar facilitate cable routing, particularly for large sections, and the long threaded studs can connect up to four lugs per stud. The BEP HD 3 Stud 650A is fully compatible with other products in the BEP Pro Installer series, enabling the creation of modular and consistent assemblies for optimized power management.

Expert opinion

Pol CONIN

Digital Manager

« Technical analysis of the BEP HD 3 Stud 650A busbar »

The BEP HD 3 Stud 650A busbar is a suitable choice for installations requiring high-current and reliable power distribution, typically on large sailboats, motor yachts, or service vehicles with substantial electrical systems. Its 3x 10mm stud design is ideal for consolidating heavy loads or main power sources, allowing up to four large cable lugs per stud—a benefit for managing thick cables.

Integration with the BEP Pro Installer system is a major advantage, simplifying the creation of clean, modular electrical panels. The removable side skirts and rounded ends of the busbar ease cable routing and reduce mechanical stress on connections. Note that its 650A capacity is specifically designed for high-power circuits. For low-ampere or simpler systems, smaller, less expensive busbars may be more appropriate. The investment in this model is justified by the robustness of its materials (tinned copper, stainless steel) and its ability to withstand demanding marine environments.

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HD 3-pin busbar 650 A MC10

$82.00 USD

$82.00 USD ~~$101.00 USD~~

Frequently Asked Questions

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What is a busbar and what is this product used for?

A busbar, or bus bar, is a metallic conductor used to distribute electrical current from a single source to multiple loads or to aggregate multiple sources into a single load. This BEP HD 3 Stud 650A busbar is specifically designed for robust power distribution in marine and industrial applications, handling high currents to ensure reliable connections for demanding electrical systems.

What is the maximum current this busbar can handle?

This BEP HD 3 Stud 650A busbar is rated for a maximum current of 650 amperes.

What is the maximum DC voltage supported by this busbar?

The busbar is designed for a maximum continuous voltage of 50V DC.

What materials make up the conductor of this busbar?

The busbar conductor is made of tinned CDA102 copper. This material is selected for its high conductivity and corrosion resistance, particularly important in demanding environments.

What is the composition of the busbar base?

The busbar base is made from a fiber-reinforced material. This material is resistant to high temperatures and marine chemicals, ensuring increased durability.

Is the busbar protected against external elements?

Yes, this busbar is fitted with a transparent polycarbonate cover. The cover protects the assembly on three sides, ensuring insulation of the connections while allowing visibility.

How many connection studs are available on this model?

This busbar model is equipped with three connection studs.

What is the diameter of the connection studs?

The connection studs have a diameter of 3/8" (10mm), designed to accommodate large cable terminals.

Is this busbar suitable for marine environments?

Yes, this busbar is specifically designed for marine applications. The materials used, such as tinned copper, a chemically resistant fiberglass-reinforced base, and stainless steel and nickel-plated brass fasteners, ensure durability in these environments.

What are the advantages of the compact design of this busbar?

The compact design of this busbar is a significant advantage as it optimizes installation space. This is particularly useful in confined areas aboard vessels or in other applications where space is limited.

Do the studs on this busbar allow connecting multiple cables?

Yes, the long threaded studs on this busbar are designed to allow up to four terminals per stud, providing high flexibility for wiring.

Which product series does this busbar belong to?

This busbar is part of BEP’s Pro Installer series, known for its robust power distribution components.

How can cables be routed to the busbar during installation?

The busbar is designed with removable side skirts. This feature allows for additional cable entries, providing increased flexibility for routing cables during installation.

Can the busbar cover be removed to facilitate installation or maintenance?

Yes, the transparent polycarbonate cover is designed to protect the connections while being removable to facilitate access during cable installation and maintenance operations.

Do rounded busbar ends provide any advantage for wiring?

Yes, the rounded ends of the busbar are a design feature that significantly simplifies cable routing, especially for large cross-sections, by reducing stress on the cables.

Which types of cable lugs are compatible with 3/8" studs?

3/8" (10mm) studs are a standard size and are compatible with large cable terminals that have a hole matching this diameter.

Can this busbar be used in industrial applications?

Yes, this busbar is designed for robust power distribution not only in marine applications, but also in industrial applications, thanks to its ability to handle high currents and its durable construction.

Is this busbar compatible with other products from the BEP Pro Installer series?

As it is itself a component of BEP's Pro Installer series, this busbar is designed to integrate seamlessly with other products in the same series, providing a complete and consistent solution for electrical systems.

Is this busbar suitable for 12V or 24V electrical systems?

Yes, absolutely. With a maximum DC voltage of 50V, this busbar is perfectly suited and even oversized for common marine and industrial electrical systems operating at 12V or 24V, providing a safety margin.

What is the composition of the fasteners used for this busbar?

The fasteners for this busbar, including studs, nuts, and washers, are made from stainless steel and nickel-plated brass. These materials are selected for their corrosion resistance, which is essential in marine and industrial environments.