{"product_id":"pollak-54-854plp-120-amp-12-volt-circuit-breaker","title":"Pollak 54-854PLP 120 Amp 12 Volt Circuit Breaker for Engine Driven Air Compressors","description":"\u003cp\u003eA 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.\u003c\/p\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eACP part number:\u003c\/strong\u003e M5040\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer part number:\u003c\/strong\u003e Pollak 54-854PLP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 120 amp\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSystem voltage:\u003c\/strong\u003e 12 volt\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReset:\u003c\/strong\u003e automatic, thermal type\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e stud terminals, panel or surface mount\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat it protects\u003c\/h3\u003e\n\u003cp\u003eOn 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.\u003c\/p\u003e\n\u003ch3\u003eAuto reset, and what that means in practice\u003c\/h3\u003e\n\u003cp\u003eAn 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.\u003c\/p\u003e\n\u003ch3\u003eReplacing one\u003c\/h3\u003e\n\u003cp\u003eDisconnect 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.\u003c\/p\u003e\n\u003ch3\u003eRelated parts\u003c\/h3\u003e\n\u003cp\u003eWe 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.\u003c\/p\u003e\n\u003ch3\u003eQuestions\u003c\/h3\u003e\n\u003cp\u003eTell 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.\u003c\/p\u003e\n\u003cp\u003ePollak 54-854PLP 120 amp 12 volt automatic reset circuit breaker for the electrical system on gas and diesel engine driven air compressors.\u003c\/p\u003e","brand":"AirComParts","offers":[{"title":"Default Title","offer_id":67721349726483,"sku":"M5040","price":56.99,"currency_code":"USD","in_stock":true}],"url":"https:\/\/aircompressorstore.com\/products\/pollak-54-854plp-120-amp-12-volt-circuit-breaker","provider":"Warthog Air Compressor Store","version":"1.0","type":"link"}