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

Save 11%

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.

Price excl. import taxesBenefit from the professional rate

£59.84 GBP

£59.84 GBP ~~£67.52 GBP~~

Shipping calculated at checkout.

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

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
Number of circuits	4.0
Number of poles	1 pole
Battery switch type	None
Battery switch control method	None
Breaker reset type	None
Circuit breaker type	None
Circuit protection method	None
CZone compatible	Oui
DVSR continuous current rating	0.0
Mounting type	Screw-on
IP rating	Not specified
Display type	None
Wired network	None
Certifications	CE
Maximum cable lug size	8 mm
Dimensions (W x H x D)	98 x 49 x 60 mm
Weight	0.272
ABYC compliance	Oui
Anti Seize Compound Included	Yes
Busbar application type	Marine professional
Busbar base material	Fiberglass reinforced plastic
Busbar Base Material Reinforcement Type	Fibers
Busbar conductor material	Tinned copper
Busbar Conductor Material Plating	Tinned
Busbar type	Dowel
Cable management features	Rounded ends of the busbar
Cable Routing Flexibility	Yes
Chemical resistance	High
Color	Black
Corrosion resistance	High
Cover Design Type	With removable skirts
Cover material	Polycarbonate
Cover Protection Sides	3
Cover transparency	Clear
Electrical Distribution Role	Robust power distribution
Electrical Isolation	Yes
Suitability for high-power applications	Yes
Intended use	Marine and RV electrical systems
Link bar design type	Starboard
Link bar overall length	98.0
Marine environment suitability	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
Product height	60
Product width	49
Product range	Pro Installer
Product type	Busbar
Secure Connection Design	Yes
Space-saving design	Yes
Number of studs	4.0
Stud Design Type	Threaded studs
Stud Material	Stainless steel
Stud size (mm)	M8
Number of terminals	4.0
Terminal thread size (mm)	M8
Terminal type	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 connections to batteries and improving overall system safety.

In terms of installation, this model stands out for its practicality. The removable skirts on the cover greatly simplify 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 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, less expensive solution would be more suitable.

Durabilité

Facilité d'installation

Rapport performance / prix

Payment and security

Your payment information and data are processed securely.

4-pin omnibus busbar 500 A

£59.84 GBP

£59.84 GBP ~~£67.52 GBP~~

Frequently Asked Questions

Need help? Contact us

What is the maximum current rating this busbar can handle?

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

What 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. The studs are 8mm (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, optimizing installation space.

Is the product supplied with a protective cover?

Yes, the bus bar includes a transparent polycarbonate protective cover. This cover isolates 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, the design of this busbar focuses on corrosion prevention. The nuts are brass-plated and the stainless steel studs are treated with an 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?

The anti-seize lubricant applied to stainless steel studs is a substance that helps prevent seizing or thread locking during nut tightening, ensuring secure connections and facilitating future disassembly.

How are the cables routed with this busbar?

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

Which types of cable lugs can be connected to studs?

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

Does the NMEA 2000 backbone require any specific maintenance?

Thanks to its corrosion-resistant design with materials such as tinned copper and stainless steel, and its protective cover, this busbar is designed 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, providing easy access to the studs and connections for installation, inspection, or maintenance.

Do specific tools need to be used 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.

Which electrical systems is this busbar suitable for?

This busbar is an essential component for marine and motorhome electrical systems, as well as 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 motorhome 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 NMEA 2000 backbone is covered by the manufacturer's warranty, which guarantees its compliance and proper operation under normal use conditions.

How is this bus bar packaged for shipping?

The busbar is packaged to protect it during transport. It is delivered with its transparent protective cover already installed, ensuring connection safety during delivery.