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Marine Battery Switches

101 Items | 1 of 4 pages
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Ignition Protected Battery Selector Switch without Key Lock - Perko
Ignition Protected Battery Selector Switch without Key Lock - Perko
Marine UL Listed. Make before break contact design makes power connections before breaking a connection for seamless transitions. For use with two …
Your price: $40.53
List price: $50.99
In stock

Charge- on- the- Go 12V Voltage Sensitive Relay Marine - BEP Marine (Marinco)
Charge- on- the- Go 12V Voltage Sensitive Relay Marine - BEP Marine (Marinco)
Dual battery charging made easy! Allows two or more batteries to be charged at the same time. When the battery reaches 13.7V the relay closes …
Your price: $85.70
List price: $105.99
In stock

Mini 4-Position Battery Switch - Blue Sea Systems
Mini 4-Position Battery Switch - Blue Sea Systems
Switches battery bank 1 or battery bank 2 or BOTH to a single load using one switch. 2.7" x 2.7". Switches isolated battery banks to all loads or …
Your price: $33.30
List price: $42.62
In stock

Add A Battery -Battery Switch & Auto Charging Relay 120 Amp -Blue Sea Systems
Add A Battery -Battery Switch & Auto Charging Relay 120 Amp -Blue Sea Systems
Add A Battery simplifies switching and automates charging for a complete two battery bank solution. e-Series Dual Circuit Plus™ Battery Switch …
Your price: $140.74
List price: $169.99
In stock

Twin Outboards, Three Battery Banks Marine - BEP Marine (Marinco)
Twin Outboards, Three Battery Banks Marine - BEP Marine (Marinco)
This system is designed for twin outboard installations using outboards without AUX outputs. It will allow the port engine to charge the port start …
Your price: $326.62
List price: $334.99
In stock

Mini Battery Switch with Knob, On-Off - Blue Sea Systems
Mini Battery Switch with Knob, On-Off - Blue Sea Systems
6006 m-Series (Mini) Battery Switch Single Circuit ON/OFF Switches a single battery to a single load group Multiple switches can be used to manage …
Your price: $24.40
List price: $31.95
In stock

e-Series Dual Circuit Battery Switch - Blue Sea Systems
e-Series Dual Circuit Battery Switch - Blue Sea Systems
5510E Dual Circuit Battery Switch CE Marked Ignition protected - Safe for installation aboard gasoline powered boats Case design allows surface or …
Your price: $45.91
List price: $63.57
In stock

Battery Switch with Alternator Field Disconnect without Lock - Perko
Battery Switch with Alternator Field Disconnect without Lock - Perko
On-Off type, available with new key lock option for extra theft protection. Features: AFD (Alternator Field Disconnect) Marine UL Listed switches …
Your price: $54.44
List price: $70.69
In stock

Battery Selector Switch, 4-Way with AFD - Attwood
Battery Selector Switch, 4-Way with AFD - Attwood
Single-pole, triple-throw switch permits four connection modes: Battery One, Battery Two, two batteries in parallel, or both off. Rated for 230-amps …
Your price: $24.29
List price: $31.19
In stock

High Performance 4-Position Battery Switch - Blue Sea Systems
High Performance 4-Position Battery Switch - Blue Sea Systems
350Amp continuous rating for applications requiring high power output, reliability and low heat generation. Luminous label for low light reading. …
Your price: $39.12
List price: $49.79
In stock

Heavy Duty Battery Selector Switch Marine - BEP Marine (Marinco)
Heavy Duty Battery Selector Switch Marine - BEP Marine (Marinco)
The 721 Battery Selector Switch is our heavy duty selector switch. Housed in the same module as the 720, it includes the same removable plates and …
Your price: $54.21
List price: $63.49
In stock

Ignition Protected Main Battery Switch without Key Lock - Perko
Ignition Protected Main Battery Switch without Key Lock - Perko
On-Off type, available with new key lock option for extra theft protection. Features: Marine UL Listed switches which surface mount. Red plastic …
Your price: $42.45
List price: $50.99
In stock

HD Battery Switch, On-Off - Blue Sea Systems
HD Battery Switch, On-Off - Blue Sea Systems
Up to 600 Ampere continuous rating for large diesel engines. Tin-plated copper studs for maximum conductivity and corrosion resistance. Accepts up to …
Your price: $73.33
List price: $102.63
In stock

Mini Battery Switch, On- Off Marine - BEP Marine (Marinco)
Mini Battery Switch, On- Off Marine - BEP Marine (Marinco)
Mini battery disconnect switch. Rated capacity for 275Amp continuous and 1250Amp cranking for systems up to 48V. Switch features a removable knob in …
Your price: $25.65
List price: $29.99
In stock

High Performance 4-Position Battery Switch with AFD - Blue Sea Systems
High Performance 4-Position Battery Switch with AFD - Blue Sea Systems
350Amp continuous rating for applications requiring high power output, reliability and low heat generation. Luminous label for low light reading. …
Your price: $43.23
List price: $55.09
In stock

Battery Switch, On-Off - Blue Sea Systems
Battery Switch, On-Off - Blue Sea Systems
9003e e-Series Battery Switch Single Circuit ON/OFF CE Marked Ignition protected - Safe for installation aboard gasoline powered boats Case design …
Your price: $36.57
List price: $46.61
In stock

Ignition Protected Battery Selector Switch with Key Lock - Perko
Ignition Protected Battery Selector Switch with Key Lock - Perko
Marine UL Listed. Make before break contact design makes power connections before breaking a connection for seamless transitions. For use with two …
Your price: $46.68
List price: $57.99
In stock

Switch/Battery Selector Switch - Cole Hersee
Switch/Battery Selector Switch - Cole Hersee
Permits current to be carried by either of 2 batteries by 2 batteries simultaneously or cuts off all current at source. Ignition protected. Plastic …
Your price: $56.49
List price: $96.29
In stock

Mini Battery Switch with Key, On-Off - Blue Sea Systems
Mini Battery Switch with Key, On-Off - Blue Sea Systems
6005 m-Series (Mini) Battery Switch Single Circuit ON/OFF Switches a single battery to a single load group Multiple switches can be used to manage …
Your price: $26.61
List price: $31.95
In stock

Mini Battery Switch & Auto Charging Relay 65 Amp - Blue Sea Systems
Mini Battery Switch & Auto Charging Relay 65 Amp - Blue Sea Systems
Simplifies switching and automates charging for a complete two battery bank solution for outboard powered boats. The Mini Add-A-Battery offers a …
Your price: $92.98
List price: $119.49
In stock

Heavy Duty Battery Disconnect Switch, 6-36v, 12-M28401bp - Cole Hersee
Heavy Duty Battery Disconnect Switch, 6-36v, 12-M28401bp - Cole Hersee
Details: Single Pole, 2 positions: Off-On Rating: 6-36V DC; 175A continuous 800A intermittent 15 sec. On, 5 min. Off (UL rating) Terminals: two 3/8" …
Your price: $50.37
List price: $86.09
In stock

Mini Battery Selector Switch Marine - BEP Marine (Marinco)
Mini Battery Selector Switch Marine - BEP Marine (Marinco)
701-S Mini battery selector switch. The 701-S is the most compact selector switch available on the market. Housed in the same dimensions as the 701, …
Your price: $31.98
List price: $38.69
In stock

Compact Battery Switch No Lock - Perko
Compact Battery Switch No Lock - Perko
Compact medium duty. Requires 1/3 less space to mount with the same bolt pattern as the standard size. Popular 90" easy-to-identify position rotation. …
Your price: $34.62
List price: $56.99
In stock

Mini Battery Switch Dual Circuit Plus, Dual Position with Knob, M-Series - Blue Sea Systems
Mini Battery Switch Dual Circuit Plus, Dual Position with Knob, M-Series - Blue Sea Systems
6011 m-Series (Mini) Battery Switch Dual Circuit Plus™ Switches two battery banks simultaneously with one simple ON/OFF switch while …
Your price: $42.33
List price: $53.24
In stock

Battery Disconnect Switch, ON/OFF - Seasense
Battery Disconnect Switch, ON/OFF - Seasense
Battery disconnect switch. Voltage ratings for applications up to 48VDC. Continuous rating of 300 Amps DC. Can be surfaced or panel mounted. Features …
Your price: $26.66
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List price: $31.79
In stock

BATTERY SWITCH 1-2-BTH - Marpac
BATTERY SWITCH 1-2-BTH - Marpac
* Select from battery bank 1, battery bank 2 or both for charging or emergency starting * Can be mounted on or behind a panel * Rated at 300 amps * …
Your price: $36.17
List price: $37.98
In stock

Battery Switch Selector 4 Position, HD-Series - Blue Sea Systems
Battery Switch Selector 4 Position, HD-Series - Blue Sea Systems
HD-Series Battery Switch Selector PN: 3002 500 Amperes Continuous Rating for large diesel engines 500 Ampere Continuous Rating Accepts 4/0 battery …
Your price: $74.82
List price: $106.86
In stock

HD-Series Battery Switch Selector with Alternator Field Disconnect - Blue Sea Systems
HD-Series Battery Switch Selector with Alternator Field Disconnect - Blue Sea Systems
HD-Series Battery Switch Selector with Alternator Field Disconnect PN: 3003 500 Amperes Continuous Rating for large diesel engines 500 Ampere …
Your price: $83.12
List price: $121.55
In stock

Mini Panel Mount Battery Selector- Switch, 200 Continuous Amp - Afi (Marinco)
Mini Panel Mount Battery Selector- Switch, 200 Continuous Amp - Afi (Marinco)
The 701-S is the most compact selector switch available on the market. Housed in the same manner as the 701 and includes the same removable side …
Your price: $34.79
List price: $45.19
In stock

Battery Switch with Alternator Field Disconnect with Lock - Perko
Battery Switch with Alternator Field Disconnect with Lock - Perko
On-Off type, available with new key lock option for extra theft protection. Features: AFD (Alternator Field Disconnect) Marine UL Listed switches …
Your price: $55.55
List price: $68.99
In stock

Battery Switch Single Circuit ON-OFF with Alternator Field Disconnect, E-Series - Blue Sea Systems
Battery Switch Single Circuit ON-OFF with Alternator Field Disconnect, E-Series - Blue Sea Systems
9004e e-Series Battery Switch Single Circuit ON/OFF w/ Alternator Field Disconnect Includes AFD (Alternator Field Disconnect) CE Marked Ignition …
Your price: $50.40
List price: $65.69
In stock

Battery Switch Dual Circuit Plus, E-Series - Blue Sea Systems
Battery Switch Dual Circuit Plus, E-Series - Blue Sea Systems
5511e Dual Circuit Plus Battery Switch CE Marked Ignition protected - Safe for installation aboard gasoline powered boats Case design allows surface …
Your price: $45.91
List price: $63.57
In stock

101 Items | 1 of 4 pages
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Boating Know How
Infographic

Blue Sea Systems Tech Tip: Battery Switches Explained

... read more Infographic: Marine Battery Switches Explained read less
Infographic

Blue Sea Systems Tech Tip: Dual Circuit Plus Explained

Here you can learn how charge coordination works with our Tech Tip's thorough explanation.... read more Infographic: Dual Circuit Plus Explained

The Dual Circuit Plus system is best known for its ability to prolong the life of the battery and prevent it from dying. It is useful in the following scenarios:

  • Reducing the time that is ordinarily required to check the battery.
  • Using unpredictable, vulnerable electronics.
  • When it can be paired up with an Automatic Charging Relay (ACR)

This switch is designed to supply extra power to devices that are hooked up to certain battery banks. Separating the energy of the designated electronic and the engine bank helps to preserve the battery's power and prevents the most sensitive electronics from being damaged by voltage spikes while it is starting up. Together with an Automatic Charging Relay (ACR), the two charges combine and flows to the alternator. This combination creates a battery charge that is twice as effective and helps the battery live at least three times as long. Here are some things to consider when pairing the Dual Circuit Plus system with the ACR:

  • You will need to turn the switch into the “On” position when you are operating it with the power on.
  • If you do not use any power and are storing your application, keep the switch on the “Off” position.
  • When you are jump-starting the application, be sure to turn the switch to the designated half point. Once the engine has been running for a minute, switch it to the “On” position.

We do recommend advising with a mechanic or a technician before switching to this method.

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blue sea systems battery switch

Blue Sea Systems Battery Switch (Video)

Learn how to add an additional battery to your boat via a Blue Sea's Battery switch. Presented by Blue Sea. ... read more



Video Transcript

Hi! Chuck Hawley with Blue Sea Systems.

You know one of the main tenants of marine safety is it you have to be able to start you engine so you can both charge your batteries and see if you can get home.

One of the things that conspire to make this difficult is if you only have a single battery. The second is if you want a boat that has two batteries but a conventional one to both battery switches.

Now one of the challenges is that a lot of people will leave it on the both position and then run both their batteries down so they don’t have a backup battery.

Well Blue Sea Systems has come up with a great solution to this problem and it consists of two quality components. The first is the dual circuit plus battery switch. Now this looks like a conventional battery switch but it’s got a difference.

Now the back side, instead of having the normal three terminals that almost every other battery switches in the industry has, it has four terminals. One that goes to the engine battery, and to the engine, one that goes to the house battery and to the house loads.

By turning the switch on, you connect the house loads to the house battery and the engine to the engine battery and the two circuits are completely isolated. Now, that’s great when you’re trying to keep your starting battery from being discharged. But if the engine’s on how are you going to charge that house battery that’s isolated from it?

Well that’s where the Blue Sea systems automatic charge really comes from. This compact package is a voltage controlled relay which means that as the voltage rises, the relay closes and it combines both battery banks together. As the voltage drops down when your engine’s off it isolates both battery banks and you simply run a cable from this terminal to your house battery, this terminal to your engine battery and then a small ground cable. It does all the rest. And it keeps you from having to be involved in the electrical system by switching batteries on and off.

Now, if you’re on the first case we only have single battery, this is the ideal way to intelligently add a second battery to your system. Buy a battery box and a battery and some cables and these two items and you’ll have a bullet proof electrical system.

These items are packaged together in two different ways – one is in the original Add-A-Battery and this is for boats that have alternators up to 120 amperes or for smaller boats that have smaller alternators or mini Add-A-Battery. Both of these are attractably packaged and available to you from Blue Sea Systems.
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