e-Series On-Off Battery Switch - e-Series On-Off Battery Switch

e-Series On-Off Battery Switch - Mounting Diagram

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Blue Sea Systems

9004E-BSS

e-Series ON/OFF battery switch

The BLUE SEA e-Series ON/OFF 9004E battery switch is a reliable solution for isolating a single battery from a group of loads, suitable for gasoline and diesel inboard engines. Part of the e-Series range, it offers a continuous capacity of 350 A, a maximum voltage of 48 V DC, and includes ignition protection as well as an AFD function. The product includes the 9004E battery switch.

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59,93€

59,93€ ~~73,75€~~

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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.

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

Custom installation

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Request a quote

Installers near you

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Support service

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Technical specifications

Product use	Management and disconnection of a single battery for inboard gasoline and diesel engines
Switch type	Single-circuit ON-OFF
Continuous current (A)	350
Intermittent current (A)	600
Cranking current (A)	1200
Maximum DC voltage	48
Number of poles	1
Positions	2
AFD protection	Oui
Terminal type	Tinned copper studs
Terminal size	3/8"-16 (M10)
Wiring connection type	4/0 AWG crimp terminals
Control type	Rotary knob
Mounting type	Surface or rear/front panel mounting
IP rating	IP66
Operating voltage range	0-48
Panel cutout diameter mm	40.39
Weight	0.43
Dimensions (W x H x D)	97.79 x 97.79 x 76.20
ABYC compliance	Yes
Actuator color	Red
Actuator style	Rotary
Alternator Field Disconnect Wiring	F1, F2
Amperage	350
Ignition Protection Standards List	UL 1500, SAE J1171
Installation Location General	Near the batteries
Installation type	Surface mount; Rear panel mount; Front panel mount
LED indicator	No
Mounting Centers Mm	3.00
Mounting screw size (metric)	M6
Nominal voltage	48V
Operation Restriction Engine Running	Do not operate engine while running
Number of outlets	0
Product subtype	Battery isolator
Switch function	Battery disconnect/connect
Terminal Stud Design Type	Monobloc
Terminal Stud Torque Nm	15.82
UL certification	UL 1107

Detailed description

The BLUE SEA e-Series ON/OFF 9004E battery switch is designed for reliable management of a single battery to a load group, specifically for inboard gasoline and diesel engines. It belongs to the e-Series range from Blue Sea Systems, offering a continuous capacity of 350 A and a maximum operating voltage of 48 V DC, distinguishing it from the m-Series models (300 A, 48 V DC) intended for outboards and small engines, and the HD-Series models (500-600 A, 32 V DC) for large diesels.

Technical specifications and protection

This battery switch delivers electrical performance with a cranking capacity of 1,200 A for 30 seconds and an intermittent capacity of 600 A for 5 minutes. The terminal studs are made of tin-plated copper, 3/8"-16 (M10), ensuring maximum conductivity and corrosion resistance. Their one-piece design reduces the risk of overheating, and their length of 22.22 mm (7/8") allows for multiple 4/0 AWG (95mm²) cable lugs. A tightening torque of 15.82 N·m (140 in-lb) is recommended for connections.

Safety and installation

The 9004E includes ignition protection, meeting UL 1500 and SAE J1171 standards, making it safe for installation on gasoline-powered boats. Its Alternator Field Disconnect (AFD) function protects the alternator diodes if the switch is turned OFF while the engine is running. The housing allows for surface or rear-panel mounting and is IP66 rated, providing protection against powerful water jets. It complies with American Boat and Yacht Council (ABYC) requirements for battery switches, is UL 1107 certified, and CE marked to ISO 8846.

Documentation

Type	Nom
	EN - Instructions - e-Series On-Off Battery Switch
	EN - M Series, E Series, And Hd Series Battery Switch Ope... - e-Series On-Off Battery Switch
	EN - E Series Battery Switches - e-Series On-Off Battery Switch
	EN - Manual - e-Series On-Off Battery Switch
	EN - Certificate - e-Series On-Off Battery Switch
	EN - Certificate - e-Series On-Off Battery Switch
	EN - Certificate - e-Series On-Off Battery Switch

Expert opinion

Pol CONIN

Digital Manager

« Technical analysis: BLUE SEA e-Series 9004E battery switch with AFD »

The BLUE SEA e-Series ON/OFF 9004E battery switch is a practical and reliable solution for managing power supply in embedded systems, particularly on sailboats and motorboats equipped with inboard gasoline or diesel engines. Its continuous rated capacity of 350 A DC and maximum voltage of 48 V DC make it suitable for medium-sized electrical setups, distinguishing it from the m-Series for small applications and the HD-Series for high-power systems. The inclusion of the AFD (Alternator Field Disconnect) function is a major safety feature, protecting the alternator from potential damage in case of unexpected battery disconnection while the engine is running—a scenario commonly encountered in less optimized installations.

Installation is flexible thanks to surface or rear-panel mounting options, and the 3/8"-16 (M10) tinned copper studs with a length of 22.22 mm facilitate the connection of large-gauge cables (up to 4/0 AWG). It is critical to respect the tightening torque of 15.82 N·m (140 in-lb) to ensure optimal electrical connection and prevent overheating. This model integrates seamlessly into electrical systems compliant with ABYC and UL standards, and its IP66 rating ensures resistance to demanding marine environments. While it does not offer battery combining functions like the Dual Circuit Plus models, its simple ON/OFF design is ideal for isolating a single battery or a dedicated battery bank for a specific load, such as starting or main service, without added complexity.

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e-Series ON/OFF battery switch

59,93€

59,93€ ~~73,75€~~

Frequently Asked Questions

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What is the primary function of the BLUE SEA e-Series ON/OFF 9004E battery switch?

This battery isolator is designed to disconnect a single battery or a bank of batteries in an emergency or when the boat is not in use. It reliably manages power distribution from a battery to a group of loads, particularly for inboard gasoline and diesel engines.

What is the continuous nominal current rating of this battery switch?

The BLUE SEA e-Series ON/OFF 9004E battery switch has a continuous rated current of 350 A.

What is the maximum operating voltage supported by the 9004E model?

The maximum operating voltage for this battery switch is 48 V DC.

Is the 9004E battery switch protected against ignition?

Yes, model 9004E is ignition protected. It meets UL 1500 and SAE J1171 standards, making it safe for installation on gasoline-powered boats. It is also ISO 8846 certified.

What is the specific feature of the terminal studs on the e-Series battery switch?

The terminal studs are made of tin-plated copper, 3/8"-16 (M10), providing maximum conductivity and corrosion resistance. Their one-piece design reduces the risk of overheating, and their 22.22 mm (7/8") length allows multiple cable terminals to be fitted.

What is the Alternator Field Disconnect (AFD) function and what is it used for?

The Alternator Field Disconnect (AFD) function protects the alternator's diodes. It activates if the switch is turned to OFF while the engine is running, preventing damage to the alternator.

What is the difference between Blue Sea Systems e-Series, m-Series and HD-Series battery switches?

The e-Series models (such as the 9004E) have a continuous capacity of 350 A and are designed for inboard gasoline and diesel engines. The m-Series models have a continuous capacity of 300 A and are intended for outboards and small gasoline or diesel engines. The HD-Series models have a continuous capacity of 500-600 A and are for large diesel engines.

What is the ingress protection (IP) rating of this battery switch's enclosure?

The 9004E battery switch housing is IP66 rated, ensuring protection against powerful water jets.

What are the starting and intermittent load capacities of the 9004E battery switch?

Cold cranking amps (30 seconds): 1 200 AIntermittent capacity (5 minutes): 600 A

How many battery inputs and switch positions does this model have?

The BLUE SEA e-Series ON/OFF 9004E battery switch is a single-circuit model. It has one battery input and two switching positions (ON/OFF).

What are the mounting options available for this battery switch?

The 9004E battery switch housing allows surface mounting or rear-panel mounting.

Is the 9004E battery switch compatible with the mounting hole patterns of other brands?

Yes, the 9004E battery switch housing design is compatible with most PERKO and Guest battery switch mounting hole patterns.

What is the recommended torque for terminal connections?

The recommended torque for terminal stud connections is 15.82 N·m (140 in-lb).

Which type of cable is recommended to meet the current specifications of the battery switch?

Use of 4/0 AWG (95mm²) battery cables is recommended to meet nominal current specifications. Reducing cable size will lower current capacity.

Where should the battery switch be installed?

The battery isolator must be installed in an easily accessible location close to the batteries.

What safety precautions must be taken before installing the battery switch?

Before any installation, it is imperative to disconnect the positive terminal of the battery. It is also advisable to consult a marine electrician for proper wiring.

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

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

What are the safety and compliance standards met by this battery switch?

This battery switch complies with all American Boat and Yacht Council (ABYC) requirements for battery switches. It is also UL 1107 certified for electrical power switches and meets UL 1500 external ignition protection and SAE J1171 requirements. It is CE and ISO 8846 certified.

What are the mounting center dimensions for the 9004E battery switch?

The mounting centers of the 9004E battery switch are spaced 3.00" (76 mm) apart.

Can the battery switch be turned off while the engine is running?

No, it is critical not to set the switch to OFF when the engine is running. It is recommended to turn off all electrical devices before handling the switch.