{"product_id":"ac-parts-2601392-thermostatic-switch-freightliner-heavy-duty-trucks","title":"Red Dot RD4125-36 Rotary Thermostatic Switch – 12\/24V 36in Capillary","description":"\u003cp\u003eRestore cabin cooling with the 2601392 thermostatic switch. This 12\/24V adjustable-temperature switch enables operator control of A\/C compressor cycling via a knob-style interface. The 36-inch capillary tube accommodates standard evaporator installations in heavy-duty trucks and commercial equipment. Turning the knob adjusts the cut-in temperature across a 33–45°F range with a 5°F clutch cycling band.\u003c\/p\u003e\n\n\u003ch2\u003eSigns You Need a New Thermostatic Switch\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eA\/C compressor fails to cycle or cycles erratically\u003c\/li\u003e\n\u003cli\u003eEvaporator ices up even at highest temperature setting\u003c\/li\u003e\n\u003cli\u003eAir conditioning not responding to operator knob adjustments\u003c\/li\u003e\n\u003cli\u003eA\/C stuck in continuous run mode and cannot be modulated\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eManufacturer\u003c\/th\u003e\n\u003ctd\u003eRed Dot\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePart Number\u003c\/th\u003e\n\u003ctd\u003eRD4125-36\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePart Type\u003c\/th\u003e\n\u003ctd\u003eRotary Variable Thermostatic Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eVoltage\u003c\/th\u003e\n\u003ctd\u003e12\/24V (bi-voltage)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCapillary Tube Length\u003c\/th\u003e\n\u003ctd\u003e36 inches\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eAdjustable Temperature Range\u003c\/th\u003e\n\u003ctd\u003e33°F to 45°F\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eClutch Cycle Range\u003c\/th\u003e\n\u003ctd\u003e5°F band\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRefrigerant Type\u003c\/th\u003e\n\u003ctd\u003eR12\/R134a\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eControl Type\u003c\/th\u003e\n\u003ctd\u003eKnob (manual)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eCross References\u003c\/h2\u003e\n\u003cp\u003eThis part replaces or is equivalent to the following part numbers:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRed Dot OEM:\u003c\/strong\u003e RD4125-36, RD-4125-36P, RD-5-4125-36P\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFreightliner:\u003c\/strong\u003e RNCA10-6581-00\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMack:\u003c\/strong\u003e A22-15817A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlso known as:\u003c\/strong\u003e 9533N178, MVA1-1048, 71R2250\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eApplications\u003c\/h2\u003e\n\u003cp\u003eThis rotary thermostatic switch fits:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFreightliner Century, Classic, Columbia, FLD120 (with knob control)\u003c\/li\u003e\n\u003cli\u003eMack CH, CL, CM, CS Series\u003c\/li\u003e\n\u003cli\u003eInternational, Peterbilt, and other heavy-duty trucks\u003c\/li\u003e\n\u003cli\u003eRefrigerated and specialty vehicle A\/C systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cem\u003eVerify your capillary tube length and electrical system voltage (12V or 24V) before ordering to confirm fitment.\u003c\/em\u003e\u003c\/p\u003e","brand":"Red Dot","offers":[{"title":"Default Title","offer_id":51191400071453,"sku":"2601392","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/0730\/1991\/files\/Rotary-Thermostats-2601392.jpg?v=1776788023","url":"https:\/\/www.allprodiesel.net\/products\/ac-parts-2601392-thermostatic-switch-freightliner-heavy-duty-trucks","provider":"All Pro Truck Parts","version":"1.0","type":"link"}