Battery switch 2 parallel banks 400 A continuous 1/1&2/Parallel/Off 48 V

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BEP Marine

772-DBC

Battery switch 2 parallel banks 400 A continuous 1/1&2/Parallel/Off 48 V

The BEP 772-DBC battery isolator is designed for managing two battery banks and two loads at 48V, providing a continuous current of 400A and IP67 protection. Part of the Pro Installer range, it includes an "Isolated-On" position and simplifies installation thanks to compatibility with BEP bus bars. No additional accessories are included with this battery isolator.

Retail priceBenefit from the professional rate

75,98€

75,98€ ~~93,50€~~

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Prices shown excluding VAT for Türkiye. If your delivery address is in the European Union, the VAT of the destination country will be added at checkout.

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	48
Amperage	400.0
Number of circuits	2.0
Number of poles	Dual
Supported battery banks	2.0
Battery switch type	1/1&2/Parallel/Off
Battery switch control method	Manual
Circuit protection method	None
Mounting type	Surface mounting, Front panel mounting, Rear panel mounting
Ingress protection	IP67
Display type	None
Wired network	None
Certifications	CE, ISO 8846, SAE J1171
Maximum cable lug size	10
Dimensions (W x H x D)	98 x 98 x 92 mm
Weight	0.7
Application scenario	Maintenance or emergency
Continuous current (A)	400 A
Control type	Rotary
Corrosion resistance	High
Cranking current (A)	1500 A
Cranking Current Duration S	10
Product creation date	2023-03-16 13:51:31
Document Ids	3822, 3821, 3823, 3514, 3819, 3820
Electrical Distribution Role	Optimization of the electrical distribution
Installation Benefit Space Saving	Allows for more compact installations
Intermittent current (A)	600 A
Intermittent Current Duration Minutes	5
Isolated On Position Feature	Yes
Load Power Retention Isolated Engine	Yes
Maximum DC voltage	48 V
Mounting Footprint Mm	97.79 x 97.79
Operating voltage range	12-48 V
Panel Integration Focus	Yes
Parallel Mode Functionality	Allows combining both battery banks for combined starting or charging.
Positions	1, 1&2, Parallel, Off
Product Application Detail	Advanced energy management onboard
Product barcode	772-DBC
Level 0 product category	Merchandise
Product category level 1	NAVICO GROUP
Product category level 2	VET
Product category level 3	Battery switches
Product use	Battery isolator for selecting and paralleling two battery banks
Product type	Battery isolator
Product page URL	/shop/772-dbc-bep-battery-splitter-2-banks-parallel-ez-400a-continu-1-1-2-parallel-off-48v-3259
Standard Footprint Imperial	3.85 x 3.85
Supported Loads Isolated Mode	Onboard power, VHF radio
Switch type	Manual rotary
System Integration Benefit	Simplifies integration with other systems
Terminal Material	Tinned copper
Terminal Material Plating	Tinned
Terminal size	M10
Terminal Stud Size Imperial	3/8"
Terminal Stud Size Metric	M10
Terminal type	M10 bolt
Wiring connection type	Bolt

Detailed description

Designed for advanced energy management aboard, the BEP 772-DBC battery switch is an integrated solution for 48V systems. This device allows control of two battery banks and two separate loads, consolidating the functions of three battery switches into a single compact unit. It stands out for its ability to optimize electrical distribution while providing overcurrent protection for demanding applications.

Power management and safety

The 772-DBC supports a continuous current of 400A, an intermittent current of 600A for 5 minutes, and a starting capacity of 1500A for 10 seconds, with a maximum voltage of 48V DC. Its intuitive operation (1/1&2/Parallel/Off) includes a unique "Isolated-On" position. This safety feature allows power to remain supplied to essential equipment (such as house loads and VHF radio) even when the engine is electrically isolated, a critical characteristic for maintenance or emergencies. The 10mm (3/8") tinned copper connection studs ensure optimal conductivity and corrosion resistance.

Installation and integration

The BEP 772-DBC battery switch is engineered for ease of installation and system integration. With a standard footprint of 3.85" x 3.85", it fits seamlessly into various electrical panels. Its compatibility with BEP’s Pro Installer busbar range enables direct clustering, facilitating faster and more compact installations. Removable side plates and a detachable knob enhance installation and maintenance flexibility. Constructed from reinforced fiber plastics and using stainless steel nuts/washers, this battery switch offers IP67 protection and ignition resistance tested to UL1107, ensuring reliability in marine environments.

Expert opinion

Pol CONIN

Digital Manager

« Advanced and secure management of 48V battery banks »

The BEP 772-DBC battery switch is a top choice for marine electrical setups requiring fine and secure management of two battery banks. Its main advantage lies in its "Dual Bank Control" concept, which effectively replaces the installation of multiple separate switches. For sailboats or motorboats equipped with a service bank and a starter bank, or for hybrid systems with a specific load requiring isolation, this model significantly simplifies wiring and centralizes control. The "Isolated-On" function is particularly relevant for onboard safety, allowing the engine to be isolated for maintenance while keeping essential equipment like VHF or lighting powered. This capability is often underestimated but crucial during at-sea interventions.

Its compatibility with BEP’s Pro Installer busbar system enables "cluster" installation, optimizing space and reducing voltage drops through direct and robust connections. This switch is particularly suited to medium to large boats (up to about 15–20 meters) where current demands and the complexity of 48V systems become significant. It is ideal for installations where reliability and compliance with standards (UL1107 for ignition protection) are paramount, without requiring the complexity of a fully digital power management system like CZone, for which BEP offers other more advanced solutions.

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Battery switch 2 parallel banks 400 A continuous 1/1&2/Parallel/Off 48 V

75,98€

75,98€ ~~93,50€~~

Frequently Asked Questions

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What is the primary function of the BEP 772-DBC battery isolator?

The BEP 772-DBC battery isolator is an integrated solution designed for advanced energy management aboard. Its main functions are:

Control two battery banks.Manage two separate loads.Consolidate the functions of three battery switches into a single compact unit.Optimize electrical distribution.Provide overcurrent protection.

What is the maximum continuous current rating this battery switch can handle?

This battery switch can handle a continuous current of 400 amperes (400A), providing reliable power for demanding systems.

What is the maximum voltage supported by the BEP 772-DBC battery switch?

The BEP 772-DBC battery switch is specifically designed for use with 48V DC systems.

What are the different operating positions for this battery switch?

Operating positions include:

1: Powers the main load from Battery 1.
1.1 & 2 (Parallel): Connects both batteries in parallel to power the load or for starting.
Off: Cuts all power.
It also has a unique Isolated-On position, which is a safety feature.

What is the "Isolated-On" function and what is it used for?

The "Isolated-On" function is a unique safety position. It allows the power supply to service loads (such as house loads and VHF radio) to remain active even when the engine is electrically isolated. This feature is essential for maintenance or in emergencies, ensuring that critical systems stay operational.

What is the cranking capacity of this battery switch?

The BEP 772-DBC battery isolator has a cranking capacity of 1500 amperes (1500A) for a duration of 10 seconds.

What is the intermittent current rating that the battery switch can handle?

It can handle an intermittent current of 600 amperes (600A) for a period of 5 minutes.

What type of protection is fitted on the BEP 772-DBC battery switch?

The BEP 772-DBC battery switch is designed to provide overcurrent protection, enhancing the safety of your electrical system.

Is the battery switch resistant to water or moisture?

Yes, the BEP 772-DBC battery switch has an IP67 ingress protection rating. This means it is protected against dust and temporary immersion in water, making it suitable for marine environments.

What materials are used for the connection studs?

The connection studs are made of tinned copper, 10mm (3/8"). This material ensures optimal electrical conductivity and excellent corrosion resistance, essential in marine environments.

Is this battery switch suitable for marine applications?

Yes, its robust design, IP67 waterproof rating, and use of tinned copper studs make it particularly suitable and reliable for demanding marine environments.

Is this battery switch suitable for advanced energy management?

Yes, the BEP 772-DBC is specifically designed for advanced energy management on board. It allows control of two battery banks and two separate loads, consolidating the functions of multiple switches for optimized electrical distribution and enhanced protection.

What are the physical dimensions of this battery switch?

The BEP 772-DBC battery switch has a standard footprint of 3.85" x 3.85" (approximately 9.78 cm x 9.78 cm). This compact size makes it easy to install in various electrical panels and confined spaces aboard.

What is the size of the connection studs for the cables?

The connection studs are 10 mm (3/8"). This size is standard for high-power applications and ensures secure cable connections.

Can the battery switch be integrated with other BEP equipment?

Yes, its compatibility with BEP's Pro Installer bus bar range enables direct grouping (cluster capability), facilitating more complex and organized electrical installations.

Can this battery switch be used with busbars from other brands?

It is designed to be compatible with BEP’s Pro Installer bus bar range, enabling direct grouping and simplified integration. For bus bars from other brands, carefully check connection and mounting specifications to ensure adequate compatibility and safety.

Is it possible to connect multiple of these battery isolators together?

Yes, thanks to its compatibility with BEP's Pro Installer busbar range and its cluster capability, multiple 772-DBC battery isolator units can be integrated into larger and more complex electrical systems.

How does the BEP 772-DBC battery switch work to manage my two battery banks?

The BEP 772-DBC battery isolator is designed for advanced management of two separate battery banks on a 48V system. It consolidates the functions of multiple switches into a single compact unit, offering several operating modes:

Position 1: Connects the first battery bank to the electrical system. Position 1&2: Allows simultaneous connection of both battery banks to two separate loads, enabling independent management of each bank. Parallel Position: Connects the two battery banks in parallel to provide maximum power, useful for example in emergency starts or high-power loads. Off Position: Completely disconnects both battery banks from the system, ensuring total isolation for safety or storage. A unique safety feature, called "Isolated-On," maintains power to service equipment (such as house loads and VHF radio) even when the engine is electrically isolated. This battery isolator supports a continuous current of 400A and a maximum voltage of 48V DC. It also features IP67 waterproofing and 10mm (3/8") tinned copper connection studs for optimal conductivity.