Coupe batterie On-Off robuste série HD avec AFD - HD-Series Heavy Duty On-Off Battery Switch with AFD

Coupe batterie On-Off robuste série HD avec AFD - Mounting Diagram

Robust HD series battery switch with AFD

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Blue Sea Systems

3001B-BSS

Robust HD series battery switch with AFD

The BLUE SEA 3001B-BSS battery switch from the HD series is a robust ON-OFF solution for high-demand marine systems. With a continuous capacity of 600A and integrated AFD protection, it ensures the safety of the alternator and reliable isolation of a single battery. It outperforms the m-Series and e-Series in current management. Included: the 3001B-BSS battery switch with tinned copper M12 terminals.

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£75.93 GBP

£75.93 GBP ~~£109.08 GBP~~

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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

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Technical specifications

Product use	Battery switch for marine electrical circuits
Switch type	Manual On-Off switch
Courant continu (A)	600
Courant intermittent (A)	900
Courant de démarrage (A)	1750
Maximale tension dc	32
Nombre de pôles	1
Positions	On-Off
Protection AFD	Oui
Type de borne	Screw terminal
Terminal size	M12
Type de connexion câblage	Through bolt
Type de contrôle	Manual lever
Mounting type	Panel mount
IP rating	IP66
Operating voltage range	12/24
Weight	0.59
Conformité ABYC	Yes
Cable Size To Meet Ratings Awg	4/0
Cable Size To Meet Ratings Mm2	120
Protection anti-déflagrante	Yes
Ignition protection standard	UL 1500, SAE J1171, ISO 8846
Terminal Torque Nm	24.86
Ul certification	Yes
Ul Certification Standard	UL 1107

Detailed description

The robust ON-OFF battery switch HD series with AFD from BLUE SEA, part number 3001B-BSS, is designed for managing single-battery circuits in demanding marine installations. With a continuous rating of 600 amperes and a 1,750-ampere starting capacity for 30 seconds, it is suitable for large diesel engines and high-power electrical systems. This model stands out for its robustness and its Alternator Field Disconnect (AFD) function, which protects the alternator diodes in case of battery disconnection while the engine is running.

Design and performance of the HD series

BLUE SEA’s HD series sits above the m-Series (300A continuous) and e-Series (350A continuous) in terms of current capacity, making it ideal for applications requiring superior power management. The tinned copper terminals (1/2 inch / M12-1.75) provide maximum conductivity and corrosion resistance, with a one-piece design to reduce the risk of overheating. Their 7/8-inch (22.22 mm) length allows for multiple cable lugs, facilitating the integration of up to eight charge cables. The recommended tightening torque is 24.86 N·m (220 in-lb) for 4/0 AWG (120 mm²) battery cables.

Safety and compliance

The 3001B-BSS complies with American Boat and Yacht Council (ABYC) requirements for battery circuit interrupters. It is UL-listed (UL 1107) for electrical power switches and meets external ignition protection requirements UL 1500 and SAE J1171, making it safe for installation on gasoline-powered boats. Its IP66 ingress protection rating ensures protection against dust and powerful water jets, guaranteeing reliability in marine environments. The housing allows for surface or rear-panel mounting, offering installation flexibility.

Documentation

Type	Nom
	6832-003-battery-switches-web_1.pdf

Expert opinion

Pol CONIN

Digital Manager

« Technical analysis of the BLUE SEA HD 3001B-BSS battery switch with AFD »

The BLUE SEA HD 3001B-BSS battery switch is positioned as a top choice for marine electrical setups requiring robust and secure management of a single battery. Its continuous capacity of 600A is specifically designed for vessels equipped with high-power diesel engines, where high starting and service current demands are significant. Unlike the m-Series or e-Series models, which have lower capacities, the HD 3001B-BSS is built for more demanding environments and heavier loads.

The integration of the Alternator Field Disconnect (AFD) function is a major technical advantage. It eliminates the risk of damaging the alternator—a costly component—in the event of an unexpected battery disconnection while the engine is running. This feature, often overlooked, is critical for the longevity of the charging system. Installation requires careful attention to AFD wiring, which must be connected between the alternator and the voltage regulator. For optimal performance, the use of 4/0 AWG (120 mm²) battery cables is mandatory, with strict adherence to the 24.86 N·m torque specification for M12 terminals.

This switch is ideal for setups where complete isolation of a single battery (e.g., the starter battery) is required for a specific load group, without functions for selecting or combining multiple banks. It is not suitable for installations requiring switching between multiple batteries or complex energy management, for which BLUE SEA's "Selector" or "Dual Circuit Plus" models would be more appropriate. Its design allows flexible mounting, either surface or flush, near the batteries to minimize cable lengths and voltage losses.

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Robust HD series battery switch with AFD

£75.93 GBP

£75.93 GBP ~~£109.08 GBP~~

Frequently Asked Questions

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What is the main function of the BLUE SEA HD series battery switch with AFD?

The robust ON-OFF battery switch HD series with AFD is designed to disconnect a single battery bank in an emergency or when the vessel is not in use. Its Alternator Field Disconnect (AFD) function also protects the alternator diodes if the switch is set to OFF while the engine is running.

What are the current ratings of this battery switch?

This battery switch has the following current ratings:

Continuous rating: 600 amperesIntermittent rating (5 min): 900 amperesStarting rating (30 sec): 1,750 amperes

What is the maximum operating voltage of this battery switch?

The maximum operating voltage of this battery switch is 32V DC, making it suitable for 12V and 24V systems.

Is the battery switch protected against water and dust?

Yes, this battery switch has an IP66 ingress protection rating. This means it is fully protected against dust and powerful water jets from any direction.

What are the specifications of the connection terminals?

The connection terminals are made of tin-plated copper, 1/2 inch (M12-1.75). They are one-piece to reduce the risk of overheating and are 7/8 inch (22.22 mm) long to accept multiple cable lugs, allowing up to eight charging cables to be connected.

What is the recommended torque for battery cable terminal connections?

The recommended torque for battery cable terminal connections is 24.86 N·m (220 in-lb).

What type of battery cable is recommended for this battery switch?

Use 4/0 AWG (120 mm²) battery cables to comply with the device's maximum current ratings.

Is this battery switch compliant with safety standards?

Yes, this battery switch complies with multiple safety standards:

It meets all American Boat and Yacht Council (ABYC) requirements for battery circuit breakers. It is UL Listed (UL 1107) for electrical power switches. It satisfies external ignition protection requirements UL 1500 and SAE J1171.

Can I install this battery switch on a gasoline-powered motorboat?

Yes, this battery switch meets external ignition protection requirements UL 1500 and SAE J1171, making it safe for installation on gasoline-powered boats.

Where should I install the battery switch?

The battery switch must be installed in an easily accessible location near the batteries.

How to connect the Alternator Field Disconnect (AFD) function?

To connect the AFD function, you must disconnect the wire running from the alternator to the voltage regulator. Then, connect one end of this wire to terminal F1 of the battery switch and the other end to terminal F2.

What precautions should be taken before installing the battery switch?

Before installation, it is imperative to disconnect the battery's positive terminal. It is also strongly recommended to consult a marine electrical professional to ensure correct and secure wiring.

What are the mounting options available for this battery switch?

The housing design allows for two mounting options: surface mounting or rear-panel mounting.

What happens if I use battery cables smaller than the recommended size?

If the battery cable size is smaller than the recommended 4/0 AWG (120 mm²), it will reduce the current ratings the battery switch can safely handle.

What precautions should be taken when using a battery isolator switch?

When using a battery isolator switch, follow these precautions:

Turn off all electrical devices before switching the battery to OFF.Never switch to OFF while the engine is running to protect the alternator with the AFD function.

Is this battery switch suitable for large diesel engines?

Yes, with a continuous capacity of 600 amperes, this battery switch is specifically designed for large diesel engines and high-power electrical systems, providing superior power management.

What is the difference in capacity between the HD series and the other BLUE SEA battery switches?

BLUE SEA's HD series, with a continuous capacity of 600 amperes, is designed for applications requiring superior power management. It sits above the m-Series (300A continuous) and e-Series (350A continuous) in terms of current capacity.

Does this product come with a warranty?

Yes, any Blue Sea Systems product that a customer is dissatisfied with can be returned for a refund or replacement at any time, in accordance with the manufacturer's warranty.