12 Volt Circuit Breaker Accessory Kit

[jonesal]

I'm installing the battery relocation accessory kit in my M923 (relocates batts from under the pass seat to the toolbox location).

For several M900 variants, it calls for a "12-VOLT CIRCUIT BREAKER ACCESSORY KIT" Part No. 57K3611 and it is not included in the relocation kit. It goes on the 12 volt leg of the heater circuit. I need one. I've done all my searching (here and google, etc.) and cannot find one. Can someone point me to a source OR AT LEAST a part number for the 12 volt circuit breaker? I didn't know the normal MV waterproof circuit breakers came in a 12 volt configuration. I can make up the wiring from the pictures in the instructions. I just need the circuit breaker. I have found reference to the breaker kit (NSN 2290-01-475-9450, again 57K3611), but no parts breakdown so I can find a number for the breaker. Any help is appreciated.

I did check out the P to P program and its interesting that the 24V side of the heater is breaker-ed but the 12v side is not. However, based on the rewiring I need to do for relocating the batts (in the kit) i **guess** I can see why they want the 12v side breaker-ed. The wiring lengths get much longer and wiggle all over h&ll now so I suppose they want to stop a fire.

Thanks for any help,
Allen

 

[BillabongKong]

Searching for Breaker info posts on the 12v breaker for batt. relocation, and I also saw the lack of replies.
I am in the same situation, I just figured I would leave the 12v leg disconnected and taped off, until I could solve the problem. That's should be OK don't you think? Just a one speed heater motor.
Did anyone ever find a source of the 57K3611 Kit as I would prefer to keep the work to spec. ?
Actually all I really need to know is what is the Amperage of the breaker,I was figuring 15-20 amp would work. I would appreciate any thoughts from you or members who have done this modification.
Thanks Frank

 

[glassk]

http://www.sensata.com/klixon/circuit-breaker-thermal-9115.htm

Applications
•	Completely waterproof electrical systems of ordinance vehicles
•	Mobile military ground equipment, including trucks, tractors, graders, earth movers, fuel units and amphibious, as well as commercial, vehicles

 

[jonesal]

The Klixon link is for the 28.8 ones. I couldn't find any Klixon 12V ones so I ended up installing a standard military 15 amp one. I usually run my heater motor on low and it has not tripped yet. I wanted to test it and see what it would take to trip one on 12V but never got around to it. No fires the last two winters and I used the heater on low. Proof in the pudding?

AL Jones