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BEP Marine

777-BB5S-650-B

Busbar 5 studs 650 A

The BEP 5-connection 650A bus bar (ref. 777-BB5S-650) is a rugged power distribution solution for high-current marine systems. Part of BEP’s Pro Installer range, it delivers 650A capacity with five 10 mm studs and a reinforced plastic base for high chemical and thermal resistance. This model integrates seamlessly with other Pro Installer components, ensuring modular and reliable installation. The product includes the bus bar with its reinforced plastic base and polycarbonate cover.

Price excl. import taxesBenefit from the professional rate

$92.00 USD

$92.00 USD ~~$117.00 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

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Technical specifications

Nominal voltage	50 VDC
Amperage	650.0
Number of circuits	5.0
Number of poles	Single-pole
Circuit protection method	None
Mounting type	Pan head
Display type	None
Wired network	None
Certifications	CE
Maximum cable lug size	10 mm
Dimensions (W x H x D)	147 x 49 x 64
Weight	0.506
ABYC compliance	Oui
Busbar application type	Marine
Busbar base material	Fiberglass reinforced plastic
Busbar conductor material	Tinned copper
Busbar type	Heavy
Cable Attachment Angle Range Degrees	Between -90° and +90°
Chemical resistance	Yes
Color	Transparent
Cover included	Oui
Cover material	Polycarbonate
Cover transparency	Transparent
Flame retardant	Oui
Footprint Factor	1.5
High Temperature Resistance	Yes
Link bar design type	Modular
Link bar overall length	147.0
Maximum cable cross-section per stud	120.0
Modular Interconnection System	Busbars and fuse holders Pro Installer
Product range	Pro Installer
Product type	Busbar
Number of studs	5.0
Stud size (mm)	10
Stud Thread Metric	Metrics
Number of terminals	5.0
Terminal thread size (mm)	10
Weight Oz	17.9

Detailed description

The BEP 5-connection 650A bus bar (part number 777-BB5S-650) is an electrical distribution solution designed for demanding marine systems requiring reliable management of high currents. This component is rated for a nominal voltage of 50 VDC and supports continuous current of 650A, placing it in BEP’s "Heavy-duty" bus bar category.

Robust design and electrical performance

With its five 10 mm diameter metric-threaded studs, the 5-connection 650A MC5 Bus Bar ensures secure connections for large-gauge cables essential for 650A applications. Its base is made of fiber-reinforced plastic, resistant to high temperatures and chemicals, ensuring enhanced durability in marine environments. A transparent polycarbonate cover protects connections while allowing quick visual inspection. Its dimensions of 147 x 49 x 64 mm and weight of 506g optimize integration into compact electrical panels.

Integration and modularity in the Pro Installer system

The 5-connection 650A MC5 Bus Bar is part of BEP’s modular Pro Installer range, enabling easy interconnection with other bus bars and fuse holders in the same series. This compatibility provides installation flexibility and system scalability. Unlike BEP’s Z-Busbars (e.g., 777-Z10W-200 or 777-Z18W-200) which handle 200A with 6 mm studs for smaller cable terminations, the 777-BB5S-650 is optimized for primary power distribution. It complements other heavy-duty bus bars from the brand, such as the 777-BB3S-650 (3 studs) and 777-BB8S-650 (8 studs), offering a balance between the number of connections and footprint for installations requiring five high-current connection points.

Documentation

Type	Nom
	EN - Fiche technique détaillée - Bus Bar 5 connexions 650A MC5 - 777-BB5S-650
	EN - Fiche technique détaillée - Bus Bar 5 connexions 650A MC5 - 777-BB5S-650
	EN - Guide d'installation - Bus Bar 5 connexions 650A MC5 - 777-BB5S-650
	EN - Guide d'installation - Bus Bar 5 connexions 650A MC5 - 777-BB5S-650
	FR - Fiche technique détaillée des accessoires de connexion et de gainage - Bus Bar 5 connexions 650A MC5 - 777-BB5S-650
	EN - Présentation de la gamme de produits - Bus Bar 5 connexions 650A MC5 - 777-BB5S-650

Expert opinion

Pol CONIN

Digital Manager

« Technical analysis of the BEP 650A bus bar with 5 studs »

The BEP 5-connection 650A bus bar (ref. 777-BB5S-650) is a critical component for any high-current marine electrical installation requiring power distribution. Its 650A nominal rating at 50 VDC, combined with 10 mm studs, makes it suitable for main circuits on boats where safety and reliability are paramount. Its robust design—featuring a high-temperature and chemical-resistant reinforced plastic base and a polycarbonate cover—ensures excellent durability and effective protection of connections in harsh marine environments.

Integrating this bus bar into BEP’s Pro Installer ecosystem is a significant advantage. This modularity not only simplifies initial installation but also provides flexibility for future system expansions or modifications. It centralizes power connections in an organized manner, reducing cable clutter and easing maintenance. Compared to lower-capacity distribution solutions, this 650A model is essential for systems powering energy-intensive equipment such as inverters, high-output chargers, or large battery banks. Its technical design ensures optimal conductivity and efficient heat dissipation—key factors for the longevity of the entire electrical system.

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Busbar 5 studs 650 A

$92.00 USD

$92.00 USD ~~$117.00 USD~~

Frequently Asked Questions

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What is a bus bar and what is it used for?

A bus bar, or busbar, is an electrical conductor that distributes power from a single source to multiple loads or circuits. The BEP 5 650A MC5 bus bar with 5 connections is designed for primary power distribution in marine systems, enabling secure connections for high-gauge cables.

What is the maximum current capacity of this BEP bus bar?

This BEP bus bar is designed to support a continuous current rating of 650 amperes (650A).

What is the nominal voltage of this bus bar?

The nominal voltage of this bus bar is 50 VDC (volts direct current).

How many connections does this bus bar provide?

This bus bar is equipped with 5 connection studs.

What material is the bus bar base made of?

The bus bar base is made of fiber-reinforced plastic, resistant to high temperatures and chemicals, ensuring increased durability in the marine environment.

What is the material of the protective cover?

The protective cover is made of transparent polycarbonate.

What is the size of the connection studs on this bus bar?

The connection studs have a diameter of 10 mm.

What thread type is used for the connection studs?

The connection studs use a metric thread.

What is the country of manufacture for this bus bar?

This bus bar is manufactured in China.

How to ensure connected cables are the correct size?

It is critical to ensure all cables are correctly sized for the loads they carry to guarantee system safety and performance. Consult the manufacturer's guidelines for appropriate cable sizing calculations.

Is this bus bar part of a modular system?

Yes, the 5-connection 650A MC5 bus bar is part of BEP's Pro Installer modular range. This design allows easy interconnection with other components in the same series.

Which other BEP products is this bus bar compatible with for interconnection?

This bus bar is compatible with other bus bars and fuse holders from the BEP Pro Installer range, providing installation flexibility and system scalability.

What is the difference between this 650A bus bar and BEP's Z-Busbars?

The 5-connection 650A MC5 busbar is optimized for primary power distribution with 10 mm studs and a 650A current rating. BEP Z-Busbars (such as the 777-Z10W-200 or 777-Z18W-200 models) handle a maximum current of 200A with 6 mm studs, designed for smaller cable terminations and maximized power density for compact cables.

Is this bus bar suitable for demanding marine applications?

Yes, this bus bar is specifically designed for demanding marine systems, requiring reliable management of high currents thanks to its 650A capacity and robust construction.

Are there other BEP bus bars with the same capacity but a different number of connections?

Yes, BEP offers other heavy-duty bus bars with the same 650A capacity but different stud counts, such as the 777-BB3S-650 (3 studs) and the 777-BB8S-650 (8 studs).