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BEP Marine

777-BB4S-500-B

4-pin omnibus busbar 500 A

Designed for robust electrical power distribution, the BEP 777-BB4S-500-B busbar offers a 500A capacity with 4 M8 stainless steel studs. Ideal for marine systems, it ensures a reliable and corrosion-resistant connection. This product from the BEP Pro Installer range includes a polycarbonate protective cover with snap-off skirts.

Retail priceBenefit from the professional rate

$64.02 USD

$64.02 USD ~~$92.06 USD~~

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Available in 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 V
Amperage	500.0
Nombre de circuits	4.0
Nombre de pôles	1 pole
Type d'interrupteur de batterie	None
Méthode de contrôle de l'interrupteur de batterie	None
Type de réinitialisation du disjoncteur	None
Type de disjoncteur	None
Méthode de protection des circuits	None
Compatible CZone	Oui
Courant continu nominal du DVSR	0.0
Mounting type	Screw-on
IP rating	Not specified
Display type	None
Wired network	None
Certifications	CE
Taille maximale de cosse de câble	8 mm
Dimensions (W x H x D)	98 x 49 x 60 mm
Weight	0.272
Conformité ABYC	Oui
Anti Seize Compound Included	Yes
Type d'application du busbar	Marine professional
Matériau de la base de la barre omnibus	Fiberglass reinforced plastic
Busbar Base Material Reinforcement Type	Fibers
Matériau conducteur de la barre omnibus	Tinned copper
Busbar Conductor Material Plating	Tinned
Type de barre omnibus	Dowel
Fonctionnalités de gestion des câbles	Rounded ends of the busbar
Cable Routing Flexibility	Yes
Résistance chimique	High
Color	Black
Corrosion resistance	High
Cover Design Type	With removable skirts
Matériau du couvercle	Polycarbonate
Cover Protection Sides	3
Transparence du capot	Clear
Electrical Distribution Role	Robust power distribution
Electrical Isolation	Yes
Adaptabilité aux applications de forte puissance	Yes
Intended use	Marine and RV electrical systems
Type de conception de la barre de liaison	Starboard
Longueur totale de la barre de liaison	98.0
Adaptabilité à l'environnement marin	Yes
Max Cable Lug Count Per Stud	4
Max Continuous Current	500
Max Voltage Rating Dc	50
Mechanical Stress Resistance	High
Nut Material	Plated brass
Oxidation Resistance	Yes
Hauteur du produit	60
Largeur du produit	49
Product range	Pro Installer
Product type	Busbar
Secure Connection Design	Yes
Conception gain de place	Yes
Nombre de goujons	4.0
Stud Design Type	Threaded studs
Stud Material	Stainless steel
Taille des goujons	M8
Nombre de bornes	4.0
Taille du filetage des bornes	M8
Type de borne	Dowel

Detailed description

Designed for robust power distribution, the BEP 777-BB4S-500-B busbar is a key component for marine and RV electrical systems. With a 500-amp capacity and four 8mm (5/16") stainless steel studs, it allows reliable connections for multiple high-power consumers. Its design supports 50V DC, and the conductor is made of tinned copper CDA102, known for its conductivity and oxidation resistance. The base is made of fiber-reinforced plastic, providing mechanical and chemical resistance suitable for marine environments. Its compact dimensions of 98mm x 49mm x 60mm optimize installation space on board.

System integration and protection

The BEP Pro Installer busbar integrates a transparent polycarbonate protective cover, insulating and protecting connections on three sides. This cover features clip-off skirts that facilitate cable routing, offering flexibility in wiring. The rounded ends of the busbar also improve cable management. The long threaded studs allow connection of up to four large-section cable lugs, ensuring secure and durable connections.

Marine durability design

The design of this busbar emphasizes corrosion prevention, a critical factor in marine environments. The nuts are brass-plated, and the studs are stainless steel, treated with anti-seize lubricant to prevent thread binding during tightening and ensure extended longevity. As part of the BEP Pro Installer range, this busbar benefits from a common interconnection height, simplifying integration and the creation of modular electrical systems that are consistent with other BEP products in the same range, such as switches or fuse holders.

Expert opinion

Pol CONIN

Digital Manager

« Technical evaluation: BEP Pro Installer 500A busbar for marine systems »

The BEP 777-BB4S-500-B busbar is an essential electrical distribution solution for installations requiring high current management and increased reliability. Its 500A capacity makes it ideal for marine systems on yachts, workboats, or recreational vehicles equipped with multiple high-power consumers such as windlasses, bow thrusters, or large-capacity inverters. It centralizes and organizes complex wiring, reducing the number of direct battery connections and improving overall system safety.

In terms of installation, this model stands out for its practicality. The clip-off skirts on the cover greatly facilitate cable routing, while the common interconnection height with other products in the BEP Pro Installer range allows for modular and aesthetically pleasing electrical panels. This feature is a significant advantage over generic busbars, as it ensures seamless integration and time savings during assembly.

Robustness is a key strength of this component. The combination of stainless steel studs, brass-plated nuts, and anti-seize lubricant application are technical details that guarantee excellent corrosion resistance and long-term ease of maintenance in saltwater environments, where thread seizing is a common issue. It is important to note that while this busbar is designed for high power, it may not be the most economical or compact choice for installations where currents do not exceed 100A, where a smaller and less expensive solution would be more suitable.

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4-pin omnibus busbar 500 A

$64.02 USD

$64.02 USD ~~$92.06 USD~~

Frequently Asked Questions

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What is the maximum current capacity this busbar can handle?

This BEP busbar is rated for a maximum current of 500 amperes, making it suitable for high-power electrical systems.

Which materials is the busbar made of?

The busbar conductor is made of tinned copper CDA102, known for its conductivity and resistance to oxidation. The base is made of fiberglass-reinforced plastic for mechanical and chemical resistance, and the studs are made of stainless steel.

What is the maximum voltage supported by this busbar?

The BEP 777-BB4S-500-B busbar is designed to support a maximum voltage of 50V DC.

How many connection studs are available on this bus bar?

This bus bar is equipped with four connection studs. These studs are 8 mm (5/16") in diameter and are made of stainless steel.

What are the dimensions of the busbar?

The compact dimensions of the busbar are 98mm in length, 49mm in width, and 60mm in height, which optimizes installation space.

Is the product supplied with a protective cover?

Yes, the bus bar includes a transparent polycarbonate protective cover. The cover insulates and protects the connections on three sides and features removable skirts to facilitate cable routing.

What are the advantages of tinned copper for the conductor?

Tinned copper CDA102 provides excellent electrical conductivity and superior resistance to oxidation and corrosion, which is critical in marine and humid environments.

Is this bus bar corrosion-resistant?

Yes, this bus bar is designed with corrosion prevention in mind. The nuts are brass-plated and the stainless steel studs are treated with anti-seize lubricant to prevent thread seizure.

What is the weight of the busbar?

The busbar weighs 0.272 kilograms.

What is anti-seize lubricant on studs?

Anti-seize lubricant applied to stainless steel studs is a substance that helps prevent seizing or thread binding when tightening nuts, ensuring secure connections and facilitating future disassembly.

How are cables routed with this busbar?

The transparent protective cover is equipped with removable skirts that facilitate cable routing. The rounded ends of the busbar also improve cable management.

What type of cable lugs can be connected to the studs?

The 8mm (5/16") long threaded studs allow up to four large-section cable lugs to be connected, ensuring secure and durable connections.

Does the busbar require any special maintenance?

Thanks to its corrosion-resistant design with materials such as tinned copper and stainless steel, and its protective cover, this busbar is built to minimize maintenance. It is recommended to periodically inspect the connections to ensure they are properly tightened.

Is it easy to access the connections under the cover?

Yes, the protective cover is designed to be easily removable, allowing easy access to the studs and connections for installation, inspection, or maintenance.

Are specific tools required for installation?

Installation requires basic tools for tightening nuts on 8mm studs, such as a socket wrench or an appropriately sized open-end wrench. No specialized tools are listed as required by the manufacturer.

For which types of electrical systems is this busbar suitable?

This busbar is an essential component for marine electrical systems and motorhomes, as well as for other applications requiring robust 50V DC power distribution.

Can this busbar be used with 12V or 24V systems?

Yes, this busbar is designed for a maximum voltage of 50V DC. It is therefore fully compatible with the 12V and 24V systems commonly used in marine and RV applications, providing a safety margin.

Is it compatible with other BEP Pro Installer products?

The BEP 777-BB4S-500-B busbar is part of the BEP Pro Installer range, meaning it is designed to integrate seamlessly with other components in this range for professional and modular electrical installations.

Is this product covered by a warranty?

Yes, as a BEP product, this bus bar is covered by a manufacturer warranty that ensures its compliance and proper operation under normal use conditions.

How is this busbar packaged for shipping?

The busbar is packaged to protect it during transit. It is delivered with its transparent protective cover already installed, ensuring the safety of the connections during delivery.