Battery switches isolate the potentially destructive energy in the battery banks when the boat is not in use or during emergencies. Switches isolated battery banks to all loads or combines battery banks to all loads.

Blue Sea 3003BSS Attributes

• Used To: Switch Isolated Battery Banks To All Loads/ To Combine Battery Banks To All Loads
• Number Of Position: 4
• Battery Input: 2 Batteries
• Voltage Rating: 32 Volt
• Ampere Rating: 700 Amp Intermittent Rating And 500 Amp Continuous Rating
• Color: Black
• With Alternator Field Disconnect: Yes
• With Ignition Protection: Yes

Blue Sea 3003BSS Features & Benefits

• Make-Before-Break Contact Design Allows Switching Between Battery Banks Without Power Interruption
• Accepts Two 4/0 AWG Battery Cables
• Tin-Plated Copper Studs For Maximum Conductivity And Corrosion Resistance
• Tactile Indicator Conveys Knob Position By Feel
• Waterproof – Rated IP66 From Water Projected In Powerful Jets
• Case Design Allows Surface, Rear, Or Front Panel Mounting Options
• Ignition Protected—safe For Installation Aboard Gasoline Powered Boats
• Limited 2 Year Warranty

Blue Sea 3003BSS Installation Instructions

• 3001_web_version.pdf

Blue Sea 3003BSS Technical Bulletins

• all-switches.pdf
• 6832-003-BatterySwitches-web.pdf
• 6832-003-BatterySwitches-web.pdf

3003 HD-Series Battery Switch Selector with Alternator Field Disconnect 

Features:

• 500 Ampere Continuous Rating
• Accepts 4/0 battery cables
• Ignition protected - safe for installation aboard gasoline powered boats
• .870" (22.01mm) stud length to accept 4 or more cable terminals
• 1/2" (M12) Tin-plated copper studs for maximum conductivity and corrosion resistance
• Meets American Boat and Yacht Council (ABYC) requirements for battery switches
• Tactile textures indicate knob position by feel only
• Case design allows surface or rear panel mounting
• Fits all Perko and Guest low amperage battery switch hole patterns

WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.

"These Blue Sea Systems four position battery switches offer 500 amps for large diesel engines. These switches switch isolated battery banks to all loads or combines battery banks to all loads and feature tin-plated copper studs for maximum conductivity and corrosion resistance. The studs accept 1\/2\" (M12) ring terminals and have a 7\/8\" stud length (22 mm) that can accept multiple cable terminals. Accepts up to 4\/0 AWG battery cables. Blue Sea Systems one-piece terminal stud design never loosens over time. One-piece stainless flange nuts ensure safe and secure connections. Fits most Perko and Guest low amperage battery switch hole patterns. Case design allows surface or rear panel mounting options. Tactile indicator conveys knob position by feel. 5444 includes Alternator Field Disconnect (AFD) which protects the diodes in the alternator in the event of the switch being switched to the OFF position while the engine is running. If the AFD is not used to protect the alternator, an LED can be connected to the AFD terminals to indicate when the battery switch is in any position but OFF."
SKU: NVN-20234
MPN: 3003
UPC: 632085030032