Ignition protection for overcurrent devices

[Paul Moir]

Does anyone know what fuses/circuit breakers are or are not ignition protected? I need to locate a 30 or 40 amp circuit breaker or fuse in a location that requires ignition protection, and I cannot find much information on the subject.

Specifically, I know of some pricey surface mount circuit breakers ($50) that are explicitly SAE J1171 (vaporproof). I also have found out Blue Sea ANL type fuses ($20 each + holder) are approved. But most fuses and stud connect breakers don't say anything at all, except a bunch of panel type breakers explicitly say they do not conform to J1171.
I'm surprised places like Ancor and Blue Sea have nothing to say on the subject. What about ATC or those big ATM ones? Glass fuses? Any suggestions?

 

[tommays]

Re: Ignition protection for overcurrent devices

The only one i have ever seen is the breaker on sterndrive motors

The merc trim pump uses a 20 amp AGC fuse and is sealed in a rubber boot for the controls and a a 110 AMP link type fuse for the power

Both are in the bilge area


Tommays

 

[Boatin Bob]

Re: Ignition protection for overcurrent devices

OMC Cobra's used big glass AGC type fuses (50 amp) on top of the engine for years inside a black waterproof fuse holder.

 

[Paul Moir]

Re: Ignition protection for overcurrent devices

Thanks, I hadn't thought of Tilt/Trim fuses. Mind you I never knew they were located in the engine compartment anyway!

A little hunt for those Cobra 50A fuses turned up that they had the same style for some Volvo/Pentas at 30A. Sierra not only sells replacements for both, but also the rubber holder.

Fuses run less than $5 each and the holder is < $10. Now that's more like it.