Manual Battery Switches

Battery switches isolate the potentially destructive energy in the battery banks when the boat is not in use or during emergencies. They are available in different configurations according to the application.

These are familiar to most boaters as a large, usually red switch with a round face and prominent knob. The 4-position selector switch has long been the industry standard for managing the selection and charging of two battery banks. Blue Sea Systems has three families of manual battery switches.

The compact m-Series is rated at 300A continuous and is ideal for outboard motors or small inboard engines.
The standard e-Series has a 350A continuous current rating and is a popular replacement switch.
The heavy-duty HD-Series can carry up to 600A of continuous current, making it an excellent choice for boats with large diesel engines.

Blue Seas Battery Switch

Some switches have an auxiliary contact called an AFD (for Alternator Field Disconnect) which is used to disable the alternator field whenever the switch is turned to an open position. Otherwise, the alternator diodes are susceptible to damage by "cutting" the charge current to the battery.

Part No	Name	Afd	Poles	Positions	Price
BSS.6006	Blue Sea Switch Battery M ON/OFF w/Knob SKU BSS.6006	No AFD	Single Pole	ON-OFF	$56.84 $48.03
BSS.6007	Blue Sea Switch Battery M Selector SKU BSS.6007	No AFD	Single Pole	1-OFF-2-BOTH	$78.30 $64.95
BSS.9003e	Blue Sea Switch Battery e ON/OFF SKU BSS.9003e	No AFD	Single Pole	ON-OFF	$83.28 $65.98
BSS.9001e	Blue Sea Switch Battery e Selector SKU BSS.9001e	No AFD	Single Pole	1-OFF-2-BOTH	$89.85 $72.71
LIT.880064	SR Single Pole Panel Mount w/Lock-Out 300A Switch - Littelfuse 880064 SKU LIT.880064	No AFD	Single Pole	ON-OFF	$75.00
BSS.9002e	Blue Sea Switch Battery e Selector w/AFD SKU BSS.9002e	AFD	Single Pole	1-OFF-2-BOTH	$97.39 $79.88
BSS.6010	Blue Sea Switch Battery M DualCirc SKU BSS.6010	No AFD	Double Pole	ON-OFF	$92.37 $80.33
BSS.6008	Blue Sea Switch Battery M Selector 3 position SKU BSS.6008	No AFD	Single Pole	1-OFF-2	$92.37 $83.13
BSS.11001	Blue Sea Switch Battery e Selector 3p w/AFD SKU BSS.11001	AFD	Single Pole	1-OFF-2	$100.85 $83.48
BSS.5511e	Blue Sea Switch Battery e DualCircPlus SKU BSS.5511e	No AFD	Double Pole	ON-OFF-BOTH	$109.40 $89.32
BSS.6011	Blue Sea Switch Battery M DualCircPlus SKU BSS.6011	No AFD	Double Pole	ON-OFF-BOTH	$92.37 $90.00
BSS.9004e	Blue Sea Switch Battery e ON/OFF w/AFD SKU BSS.9004e	AFD	Single Pole	ON-OFF	$115.75 $97.83
BSS.5510e	Blue Sea Switch Battery e DualCirc SKU BSS.5510e	No AFD	Double Pole	ON-OFF	$109.40 $107.71
BSS.3000	Blue Sea Switch Battery HD ON/OFF SKU BSS.3000	No AFD	Single Pole	ON-OFF	$150.89 $119.90
BSS.3002	Blue Sea Switch Battery HD Selector SKU BSS.3002	No AFD	Single Pole	1-OFF-2-BOTH	$156.12 $136.43
BSS.3001	Blue Sea Switch Battery HD ON/OFF w AFD SKU BSS.3001	AFD	Single Pole	ON-OFF	$170.21 $139.95
BSS.3003	Blue Sea Switch Battery HD Selector w/AFD SKU BSS.3003	AFD	Single Pole	1-OFF-2-BOTH	$175.60 $155.29
BSS.11003	Blue Sea Switch Battery HD Selector 3p w/AFD SKU BSS.11003	AFD	Single Pole	1-OFF-2	$182.60 $161.57