{"product_id":"mars-m43944-low-pressure-switch-15-35-psi","title":"Mars M43944 Low Pressure Switch 15\/35 Psi","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe MARS M43944 is a low pressure switch rated at 15\/35 PSI, designed to open on a fall in system pressure. This type of pressure control monitors refrigerant or fluid pressure within a system and interrupts a circuit when pressure drops to the cut-out threshold, protecting compressors and equipment from operating under unsafe low-pressure conditions. HVAC technicians install this switch as part of refrigeration and air conditioning systems where low-side pressure monitoring is required. Its open-on-fall action means the switch contact opens as pressure decreases to the set point, providing a direct safety cutout signal to the control circuit.\u003c\/p\u003e\n\u003cp\u003eThis low pressure switch is suited for residential and light commercial refrigeration and air conditioning applications. It is typically installed on the low-pressure side of a refrigerant circuit, wired into the compressor control loop or safety chain. Technicians use this switch when replacing a failed OEM pressure control or when adding low-pressure protection to a system. The 15 PSI cut-out and 35 PSI cut-in settings make it appropriate for common refrigerant applications where those pressure thresholds match system operating parameters.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eOpens on pressure fall, protecting equipment from low-pressure operation\u003c\/li\u003e\n  \u003cli\u003eCut-out at 15 PSI, cut-in at 35 PSI\u003c\/li\u003e\n  \u003cli\u003eDesigned for low-side refrigerant pressure monitoring\u003c\/li\u003e\n  \u003cli\u003eInterrupts control circuit to prevent compressor damage under low-pressure conditions\u003c\/li\u003e\n  \u003cli\u003eCompact switch form factor suitable for standard refrigeration control wiring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style replacement low pressure switch for residential and light commercial air conditioning and refrigeration systems requiring 15\/35 PSI open-on-fall pressure control.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed HVAC technician or refrigeration mechanic. De-energize the system and recover refrigerant per EPA Section 608 requirements before disconnecting any refrigerant-side fittings. Verify that the system refrigerant and operating pressure range are compatible with the 15\/35 PSI switch settings before installing. Follow all applicable mechanical and electrical codes, including NEC guidelines for low-voltage control circuit wiring.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSwitch Type\u003c\/strong\u003e: Low Pressure, Open on Fall\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCut-Out Pressure\u003c\/strong\u003e: 15 psi\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCut-In Pressure\u003c\/strong\u003e: 35 psi\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUPC\u003c\/strong\u003e: 685744439448\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: MARS\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: M43944\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MARS","offers":[{"title":"Default Title","offer_id":51383645929778,"sku":"M43944","price":54.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/312673603.png?v=1782603049","url":"https:\/\/voomisupply.com\/products\/mars-m43944-low-pressure-switch-15-35-psi","provider":"Voomi Supply","version":"1.0","type":"link"}