Pollak 54-854PLP 120 Amp 12 Volt Circuit Breaker for Engine Driven Air Compressors
A 120 amp, 12 volt circuit breaker for the electrical system on an engine driven air compressor. It sits between the battery and the rest of the machine and opens if the circuit sees an overload or a short to ground, then closes again on its own once it has cooled. That is what keeps a chafed harness on a service truck compressor from turning into a burnt harness, or worse.
Specifications
- ACP part number: M5040
- Manufacturer part number: Pollak 54-854PLP
- Current rating: 120 amp
- System voltage: 12 volt
- Reset: automatic, thermal type
- Mounting: stud terminals, panel or surface mount
What it protects
On a 12 volt electric start compressor the high current paths are the ones worth protecting: the feed from the battery, the charging circuit back from the engine, and anything downstream that runs off the same battery such as a fuel solenoid, an hour meter or work lights. A 120 amp breaker is sized for that main feed, not for an individual accessory. If you are protecting a small accessory circuit, use a correspondingly smaller breaker or fuse.
Auto reset, and what that means in practice
An auto reset breaker closes again by itself when the element cools, so a momentary overload will not strand the machine. The flip side is that a real fault will make it cycle: open, cool, close, trip again. If a breaker is cycling, stop and find the fault rather than replacing the breaker. Repeated tripping is the breaker doing its job, not failing at it.
Replacing one
Disconnect the battery ground first. Note which cable went to which stud before you pull them, keep the insulating boots, and torque the nuts firmly but without crushing the terminal. A loose stud on a 120 amp circuit gets hot, and a hot terminal will nuisance trip a perfectly good breaker.
Related parts
We also stock Honda and Kohler replacement engines, engine idler assemblies, bullwhip idler throttle controls, mufflers, and the 5 gallon fuel tank and carbon canister kit for the Honda GX630.
Questions
Tell us the engine and the compressor package it is mounted on, and the Warthog Air Compressor Store team will confirm the right breaker before you order.
Pollak 54-854PLP 120 amp 12 volt automatic reset circuit breaker for the electrical system on gas and diesel engine driven air compressors.
NOTE: Actual product may be different from pictured!
Financing Options
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