Blue Sea Systems 3002 500A Battery Selector Switch
- Brand:
- Blue Sea Systems
- Part no:
- 3002
Image: Fisheries Supply
Where to buy
Specifications
- Positions
- 1-2-All selector
- Continuous rating
- 500 A
- Ignition protection
- SAE J1171
Manuals
- Installation instructions (PDF)images.boatid.com
The Blue Sea Systems 3002 is a heavy duty battery selector switch with 4 positions. It is ignition protected to SAE J1171 and rated IP66. The maker rates it at 500 A continuous, 700 A for 5 minutes and 1600 A for a 30 second crank. Its studs accept multiple cables up to 4/0, and it fits Perko and Guest low amperage hole patterns. It has no alternator field disconnect and weighs 1.25 lb.
Our take
The 500 A continuous and 1600 A cranking figures are stated for 4/0 cable, so the cable run sets what this switch can actually deliver. It has no alternator field disconnect, and the IP66 rating covers jets of water.
From our buying guide
Perko says its selector switches can be switched between 1, ALL and 2 with the engine running, and that they let you put batteries in parallel for emergency starting. Battle Born advises against that connection with its LiFePO4 batteries.
Check before you buy:
- Its continuous and 5-minute ratings suit your system. Perko rates its medium-duty 8501 at 250 A continuous.
- It has an alternator field disconnect if you need one. Perko says its AFD models protect non-unitized alternators if the switch is turned OFF with the engine running.
- If it's going in a gasoline engine space, the maker lists it as ignition protected.