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BEP Marine

770-DP-EZ

Bipolar battery switch EZ 400 A

The BEP EZ 400A bipolar battery switch is a marine electrical safety solution designed for 12-48V DC systems, providing simultaneous disconnection of the positive and negative poles with a continuous 400A capacity. Robust and IP66 certified, it is ideal for demanding marine environments. This product includes the battery switch and its EZ mounting system for easy flush-mount installation.

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£66.25 GBP

£66.25 GBP ~~£93.70 GBP~~

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Free pickup point from €150 in France
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Installers near you

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Technical specifications

Nominal voltage	12V-48V
Amperage	400.0
Nombre de circuits	1.0
Nombre de pôles	Bipolar
Parcs de batteries supportés	1.0
Type d'interrupteur de batterie	Manual
Méthode de contrôle de l'interrupteur de batterie	Manual
Type de disjoncteur	Bipolar
Méthode de protection des circuits	Manual isolation
Mounting type	Flush-mounted
IP rating	IP66
Wired network	None
Certifications	CE, UL1107
Taille maximale de cosse de câble	10
Dimensions (W x H x D)	102 x 102 x 95
Courant continu (A)	400
Type de contrôle	Manual (rotary knob)
Courant de démarrage (A)	1500
Cranking Current Duration	10 seconds
Protection anti-déflagrante	Ignition protected
Courant intermittent (A)	600
Intermittent Current Duration	5 minutes
Max discharge current (A)	400.0
Maximale tension dc	48
Nom du modèle	770-DP-EZ
Mounting Fastener Size Imperial	10g, 3/16"
Taille des fixations (métrique)	M5
Operating voltage range	12-48
Diamètre de découpe du panneau	92
Positions	ON/OFF
Product use	Isolation of marine electrical circuits, emergency shutdown, and safe maintenance by simultaneously isolating the positive and negative battery poles.
Recommended continuous discharge current	400.0
Switch type	Bipolar battery switch
Terminal size	M10 (3/8")
Terminal Torque Nm	13.5
Type de borne	Dowel
Torque Lbf	10
Warranty	5.0
Type de connexion câblage	M10 studs

Detailed description

The BEP EZ 400A bipolar battery switch is a robust and reliable solution for managing marine electrical circuits. Designed for 12 to 48V DC systems, it provides a continuous current capacity of 400A, with an intermittent capacity of 600A for 5 minutes and a starting current of 1500A for 10 seconds. Its bipolar design simultaneously isolates both positive and negative poles, offering enhanced safety compared to commonly used unipolar battery switches in similar applications. This model is an essential component for installations requiring emergency shutdown or secure maintenance.

Robust design and marine certifications

This battery switch is designed for demanding marine environments. Its IP66 protection rating ensures resistance to powerful water jets and dust. It is also "ignition protected," meaning it is designed to prevent the ignition of fuel vapors, a major safety advantage aboard. CE and UL1107 certifications attest to its compliance with international safety and performance standards. The M10 (3/8") connection studs are sized for heavy-gauge cables and require a tightening torque of 13.5 Nm (10 lbf) to ensure an optimal electrical connection resistant to vibrations.

Ease of installation and durability

The EZ mounting system simplifies the integration of the battery switch into various electrical panels or bulkheads. A 92 mm (3 5/8") drilling diameter is required for its flush installation, with M5, 10g or 3/16" fasteners. The unique mounting system allows for clean flush mounting by removing the front clips, providing a neat finish. BEP, a brand known for the quality of its electrical solutions, backs this product with a 5-year warranty, underscoring its confidence in the durability and reliability of this critical safety and energy management equipment aboard. This battery switch is a strategic choice for professionals and demanding recreational boaters.

Documentation

Type	Nom
	EN - Technical Datasheet - EZ 400A Continuous On/Off Bipolar Battery Switch 48V
	EN - Mounting Template - EZ 400A Continuous On/Off 48V Bipolar Battery Switch
	EN - Detailed technical sheet - EZ 400A continuous On/Off bipolar battery switch 48V
	EN - Installation Guide and Technical Sheet - EZ 400A Continuous On/Off Bipolar Battery Switch 48V
	EN - Installation Guide and Technical Datasheet - EZ 400A Continuous On/Off Bipolar Battery Switch 48V
	EN - Installation Guide and Technical Sheet - EZ 400A Continuous On/Off Bipolar Battery Switch 48V
	EN - Technical datasheet and installation manual - EZ 400A continuous On/Off double-pole battery switch 48V

Expert opinion

Pol CONIN

Digital Manager

« Power management and increased safety: the efficiency of the BEP EZ 400A bipolar switch »

The BEP EZ 400A bipolar battery switch represents a top-tier power cut-off solution for demanding marine systems. Its ability to handle 400A continuously and 1500A peaks during startup, across a 12 to 48V DC voltage range, makes it suitable for a wide range of applications, from small sailboats to larger motorized units. The key advantage of this model lies in its bipolar function, ensuring complete system isolation by cutting both positive and negative simultaneously, which is critical for the safety of complex installations and maintenance.

The robustness of the EZ 400A is confirmed by its IP66 rating, providing protection against water jets, and its "ignition protected" certification essential in engine compartments where fuel vapors may be present. The M10 connection studs, with a recommended tightening torque of 13.5 Nm, ensure maximum conductivity and mechanical resistance to boat vibrations. The EZ mounting system simplifies professional integration with a standardized 92 mm drilling pattern. Its 5-year warranty confirms the reliability expected from a BEP component, a guarantee of peace of mind for installers and end users.

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Bipolar battery switch EZ 400 A

£66.25 GBP

£66.25 GBP ~~£93.70 GBP~~

Frequently Asked Questions

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What is a bipolar battery switch and why is it important?

A bipolar battery switch, such as the EZ 400A model, can isolate both the positive and negative poles of a circuit simultaneously. This feature provides enhanced safety compared to unipolar battery switches, as it ensures a complete power cut-off, thereby minimizing the risks of short circuits or leakage currents—particularly critical in marine environments.

What is the DC current rating of this battery switch?

This EZ 400A bipolar battery switch is designed to handle a DC current of 400 amperes. This rating makes it suitable for demanding applications in marine electrical systems.

What is its intermittent current and starting capacity?

The EZ 400A battery switch can handle an intermittent current of 600 amperes for 5 minutes. For engine starts, it has a starting current capacity of 1500 amperes over 10 seconds, which is sufficient for most marine engines.

What is the supported voltage range for this battery switch?

This battery switch is compatible with 12V to 48V DC electrical systems.

Is this battery switch waterproof? What is its IP rating?

Yes, this battery switch is designed to withstand marine environments. It has an IP66 rating, meaning it is protected against powerful water jets and dust.

What does the "ignition protected" rating mean for this product?

The "ignition protected" rating means that the battery switch is designed to prevent ignition of fuel vapors or other flammable gases present in the environment. This is an essential safety feature for marine applications, where fire risks related to fuels are present.

What are the safety certifications of this battery switch?

This battery switch is CE certified and has been independently tested to meet UL1107 standards. These certifications ensure compliance with international safety and performance standards.

Can this battery switch be used to cut power to a single device or the entire system?

The EZ 400A bipolar battery switch is primarily designed to handle emergency shutdown or secure maintenance of the boat's entire electrical system by isolating the batteries from the rest of the circuit. It functions as the main battery switch.

What is the role of a battery switch in a marine electrical system?

The primary role of a battery switch is to allow complete isolation of the batteries from the boat's electrical system. This is crucial for safety during maintenance, to prevent battery discharge when the boat is not in use, and as an emergency measure in case of electrical issues.

Is this battery switch suitable for marine environments?

Yes, absolutely. Its robust design, IP66 water and dust protection rating, and "ignition protected" feature make it perfectly suited and safe for use in demanding marine environments.

How does the On/Off mechanism of this battery switch work?

The battery switch features a simple manual On/Off mechanism to connect or disconnect the batteries from the boat's electrical system. Simply turn the knob to switch between the two states.

How to ensure a secure electrical connection during installation?

To ensure a secure electrical connection, it is essential to verify that all cables are correctly sized for the loads they carry. Additionally, all electrical connections must be tightened to the specified torque of 13.5 Nm (10 lbf) to prevent damage to the battery switch or the system.

Is this battery switch compatible with 12V, 24V and 48V systems?

Yes, this bipolar battery switch is designed to operate across a wide voltage range and is compatible with 12V, 24V and 48V DC electrical systems.

Is this battery switch suitable for lithium batteries?

Yes, given that it supports a voltage range from 12V to 48V DC and handles high currents, this battery switch is suitable for use with lithium battery systems, as well as other types of marine batteries.

Can this battery switch be used with other brands of marine electrical equipment?

Yes, the BEP EZ 400A battery switch is a standard power management component. It is designed to integrate into most marine electrical systems and is compatible with other brands' equipment, provided voltage and current specifications are met.