Other Sellers on Amazon
+ Free Shipping
+ Free Shipping
+ Free Shipping
Blue Sea Systems 350 Amp E-Series Battery Switches
- Make sure this fits by entering your model number.
- Dual Circuit. Simultaneously switches two isolated battery banks
- Ignition protected—safe for installation aboard gasoline powered boats
- IP66 waterproof, ISO 8846 and meets ABYC requirements
- Terminal Stud Size: 3/8" - 16
- Continuous rating: 350A per circuit, Maximum voltage: 32V DC
Frequently bought together
Customers also shopped for
Have a question?
Find answers in product info, Q&As, reviews
Please make sure that you are posting in the form of a question.
9004ee-Series Battery Switch Single Circuit ON/OFF w/ Alternator Field DisconnectIncludes AFD (Alternator Field Disconnect)CE Marked Ignition protected - Safe for installation aboard gasoline powered boats Case design allows surface or rear panel mounting Meets American Boat and Yacht Council (ABYC) requirements for battery switches 3/8"-16 tin-plated copper studs for maximum conductivity and corrosion resistance, accepts 3/8" and M10 ring terminals 7/8" (22.22mm) stud length to accept multiple cable terminals Tactile textures indicate knob position by feel only
Style Name: Dual Circ.
Would you like to tell us about a lower price?
Top customer reviews
There was a problem filtering reviews right now. Please try again later.
1. Turn off all electronics, put the selector switch on the off position and disconnect all batteries.
2. When tightening the nuts, make sure they are tight, DC needs to be tight or else there will be problems.
3. Connect one of the positive wires to terminal one on the back of the switch.
4. Connect the second positive wire to terminal two on the back of the switch.
5. Connected the positive from the engine and the positive that comes from the breaker to the common terminal at the bottom of the selector switch.
6. Mount the switch in the desired location.
7. Connect the negative of both batteries together and the negative from the engine to a negative terminal of either of the two batteries.
8. Connect the positive wire from terminal 1 on the switch to the positive terminal on battery 1 (the battery used to start the engine).
9. Connect the positive wire from terminal 2 on the switch to the positive terminal on battery 2 (the one used for the radio, lights and accessories when the engine is off).
10. Enjoy having the security of two batteries.
Regarding my specific setup: I have a standard marine battery running to a 120hp Yamaha outboard. For the last couple seasons I have had an issue with the battery dying if I didn't use the boat for several weeks. Physically disconnecting the battery terminals after using the boat solved the problem, but it wasn't the most user-friendly solution for the rest of the family. The issue suggests a larger trickle from the battery than there should be, but it's not worth my time or money to figure out what device is pulling current even when the key is off. So the solution was to get a simple switch that does the same thing as physically disconnecting from the terminals. It's worked great so far; no battery drain after leaving the boat for a month.
Originally I intended to mount it below the dashboard, but I ended up taking more simple route and mounted it closer to the battery in one of the compartments under a back seat. I used a 3 5/8" hole saw to cut through the plastic wall of the seat, about halfway up from the floor. Then I pushed the switch into the hole, marked the four locations of the bolts, drilled four small holes, and mounted the switch with four nuts and bolts.
NOTE, I needed the following extra materials to install the switch:
1. 3 5/8" hole saw (not needed unless flush-mounting, and you could use a different tool too)
2. Four bolts and nuts (at least 3.5" in length, I forget the diameter)
3. Wire and crimp-connectors to extend the wire from the battery to where I mounted the switch, remember that you only need to extend the positive (+) cable to the switch)
2000 amps for 10 seconds
1000 amps for 1 minutes
600 amps intermittent for 5 minutes
350 amps continuous.
Electrical studs are long enough to accommodate about 1/2" or more of connectors
For rear mount (behind 3/4" panel) you'll need a 3 5/8" hole saw available on Amazon.