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BEP Marine

701-MDVS-D

Motorized battery switch VSS 12 V 275 A

The BEP 701-MDVS-D 12V motorized battery switch ensures intelligent charge management with its voltage-sensitive relay (VSS) and emergency coupling function. A premium evolution of the classic 701 range, it supports 275A continuously (1250A at startup) and stands out with its ultra-reliable Deutsch connectors certified IPX6. The unit comes with removable panels for cable routing up to 50 mm².

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267,73€

267,73€ ~~299,40€~~

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Available in stock

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

Custom installation

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Installers near you

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Support service

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Technical specifications

Nominal voltage	12
Amperage	275.0
Number of circuits	1.0
Number of poles	2 poles
Supported battery banks	2.0
Battery switch type	Powered
Battery switch control method	Remotely
Integrated VSR	Oui
DVSR continuous current rating	275.0
Mounting type	Flush or surface-mounted
IP rating	IPX6
Display type	LED
Certifications	UL 1107, ABYC, CE
Maximum cable lug size	70
Operating temperature range	-20 to +60
Buzzer Decibel Rating	85
Buzzer Optional Load Ma	10
Coil current (mA)	15
Compatible Buzzer Part Number	54-27C4
Continuous current (A)	275
Control type	Remote, Automatic (VSS), Manual, LED
Cranking current (A)	1250
Discharge cut-off voltage	12.2
Intermittent current (A)	455
Manual Mode Flash Pattern	3 flashes/chirps
Max discharge current (A)	275.0
Maximum DC voltage	32
Operating voltage range	8 to 30.5 V
Peak discharge current	1250.0
Positions	Off, Auto, Manual, Emergency parallel
Power Up Indication Pattern	3 flashes/chirps repeated every 2 seconds
Product use	Automated energy management and battery coupling/decoupling
Recommended continuous discharge current	275.0
Remote Off Indication Pattern	1 flash/chirp
Remote On Indication Pattern	2 flashes/chirps
Remote Switch Hold Duration S	2
Storage temperature range	-40 to +80
Switch type	Motorized battery switch, voltage-sensitive (VSS)
Terminal size	2 x 10 mm (3/8")
Terminal type	Bollards
Voltage Error Flash Pattern	3 flashes/chirps repeated every 2 seconds
Wiring connection type	Deutsch plug, Wago connector

Detailed description

The BEP 701-MDVS-D 12V motorized battery switch is an advanced solution for automated energy management aboard. A direct evolution of the renowned manual model in the 701 series, this version integrates a complete motorization coupled with a voltage-sensitive charging relay (VSS). Designed specifically for 12V systems, it supports continuous loads of 275A, 455A intermittently, and can withstand up to 1250A during startup. Its control wiring via Deutsch connector ensures superior connection reliability, essential to counter vibrations and humidity in demanding marine environments.

Automation and electrical safety

This module stands out from traditional couplers by its dual functionality: it automatically manages the coupling and decoupling of battery banks based on detected voltage (low-voltage cutoff threshold at 12.2V), and offers an emergency parallel mode, essential in case of engine battery failure. The integration of LED indicators allows precise monitoring of system status (automatic mode, overload, low-voltage disconnection, or manual mode). In the off position, its electrical consumption remains extremely low, at just 15mA.

Robust design for nautical use

Certified IPX6 (protected against powerful water jets) and ignition-protected, this battery switch complies with strict UL 1107, ABYC, and CE standards. It is equipped with two 10 mm (3/8") studs accepting cables up to 50 mm² (or 70 mm² with a tension reducer). Capable of operating in temperatures ranging from -20°C to +60°C, it outperforms standard couplers in terms of durability and secure integration within modern electrical networks.

Documentation

Type	Nom
	EN - Schéma de câblage - coupe-batterie motorisé VSS 12 V 275 A
	EN - Instructions d’utilisation et d’installation - coupe-batterie motorisé VSS 12 V 275 A

Expert opinion

Pol CONIN

Digital Manager

« The perfect combination of automated VSS coupling and mechanical reliability »

The BEP 701-MDVS-D model is a go-to solution for automated management of complex battery banks. As installers, we particularly value the integrated Deutsch (DTM06-3S) connector, which eliminates the risk of poor contact due to vibration—a common issue with traditional bare-terminal relays. Its ability to handle 1250A at startup while offering emergency parallel connection provides true redundancy for safety at sea. The manual/automatic dual functionality and built-in LED diagnostics make troubleshooting the network significantly easier. This ABYC-certified component is ideal for securing 12V charging circuits on modern units requiring high current.

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Motorized battery switch VSS 12 V 275 A

267,73€

267,73€ ~~299,40€~~

Frequently Asked Questions

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What is the BEP 701-MDVS-D battery switch?

This is a motorized battery switch with dual function. It includes a voltage-sensitive relay (VSS) to automatically manage charging between two battery banks, as well as a remote-controllable emergency parallel function.

What is the maximum current rating supported by this battery switch?

This model is designed to handle very high currents:

Continuous current: 275A DC
Peak current: 455A DC
Starting current (cranking): 1250A DC

What cable size should I use for the installation?

The maximum recommended cable size is 50 mm² (1/0). If you must use a larger cable (up to an absolute maximum of 70 mm² or 2/0), it must be fitted with a strain relief to prevent damage to the terminals.

What is the size of the connection studs?

The device is equipped with two 10 mm (3/8") diameter connection studs, ensuring robust securing of power terminals.

Is the 701-MDVS-D battery switch watertight?

Yes, it has an IPX6 protection rating. It is therefore fully protected against powerful water jets and breaking waves, making it perfectly suited to demanding marine environments.

What type of control connector is used on this model?

The "-D" version of this battery switch is equipped with a Deutsch connector (male DTM06-3S model with 20AWG contacts). This industrial standard ensures a perfectly watertight and vibration-resistant control connection.

What does a very fast LED blinking indicate?

A rapid flashing pattern (0.1s on / 0.1s off) indicates two possible situations:

The voltage is out of specifications (below 8V or above 15V/30V). The battery switch is in manual override mode.

How does the Emergency Parallel function work?

This function allows you to manually couple your battery banks (for example, house and start batteries) if your engine battery is too weak to start. When engaged in this mode, the LED emits a long flash pattern (5 seconds on, 0.5 seconds off).

What happens if battery voltage drops critically?

If the voltage drops below 12.2V (or 24.4V in 24V systems) while the engine is charging, the LED will flash for 5 minutes. If the voltage does not recover, the VSS relay will automatically disengage to protect your batteries from deep discharge.

Can this battery switch be installed in a gasoline engine compartment?

Yes, the device is certified "Ignition Protected" (protected against gas ignition). It can therefore be safely installed in compartments containing gasoline engines or fuel tanks.

How to physically install the battery switch?

It can be surface-mounted or recessed. Recommended fasteners are M5 screws or 3/16". The rear and side panels are removable to facilitate cable routing and orientation.

How to remotely turn on or off the battery switch?

The operation is very simple:

To turn on: Press the remote switch momentarily. To turn off: Hold the switch pressed for more than 2 seconds.

What are the safety certifications for this battery switch?

This BEP product meets the strictest marine safety standards in the world. It holds CE, ABYC, and UL 1107 certifications.

How should I connect the negative wire to the device?

It is important to connect only one negative wire (black) per unit. This wire must be directly connected to the negative terminal of the same battery that the battery switch is intended to isolate.

What do 3 repeated flashes every 2 seconds mean?

This specific light signal (3 flashes/beeps repeated every 2 seconds) indicates either the first power-up of the device or an overvoltage/undervoltage alert detected on the vessel's electrical system.