{"product_id":"modine-53659-high-limit-switch-stalk-mount","title":"Modine 53659 High Limit Switch Stalk Mount","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe MODINE 53659 is a high limit switch designed for use in unit heater and forced-air heating applications. This switch monitors supply air or heat exchanger temperatures and interrupts the control circuit when a preset high-temperature threshold is reached, protecting the heat exchanger from overheating damage. Rated at L200F-40F, it opens at 200 degrees F with a 40-degree F differential and resets at 160 degrees F. It uses a stalk mount configuration for direct surface attachment to the heat exchanger or plenum wall. HVAC technicians and commercial heating service pros typically handle installation and replacement of this component.\u003c\/p\u003e\n\u003cp\u003eThis high limit switch is used in gas-fired unit heaters and similar forced-air heating equipment where overheat protection is required. It fits into the control circuit as a normally closed safety device, opening on temperature rise and automatically resetting once temperatures return to the safe operating range. It is a direct OEM-style replacement part carrying alternative part numbers 3H40078-2 and 3H0400780002, and it replaces superseded part numbers 5H75769-2 and 5H0757690002. Typical installations are found in commercial and industrial heating units.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eHigh limit switch rated L200F-40F: opens at 200 degrees F, resets at 160 degrees F\u003c\/li\u003e\n  \u003cli\u003eStalk mount design for direct attachment to heat exchanger or plenum surface\u003c\/li\u003e\n  \u003cli\u003eNormally closed contact configuration interrupts control circuit on overheat condition\u003c\/li\u003e\n  \u003cli\u003eAutomatic reset operation returns to closed position once temperature drops to reset threshold\u003c\/li\u003e\n  \u003cli\u003eDirect replacement for superseded part numbers 5H75769-2 and 5H0757690002\u003c\/li\u003e\n  \u003cli\u003eCross-references OEM numbers 36TV01B3, 44842, A1035, and L200F-40F\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eReplaces MODINE part numbers 5H75769-2 and 5H0757690002. Also cross-references OEM part numbers 36TV01B3, 44842, A1035, and L200F-40F. Alternative part numbers for this component include 3H40078-2 and 3H0400780002.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation and replacement of high limit switches should be performed by a licensed HVAC technician familiar with gas-fired heating equipment. Disconnect all power to the unit and allow the heat exchanger to cool completely before removing or installing the switch. Verify the replacement switch temperature rating matches the original equipment specification before installation. Follow applicable local mechanical codes and the equipment manufacturer service documentation during the replacement procedure.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSwitch Type\u003c\/strong\u003e: High Limit Switch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTemperature Rating\u003c\/strong\u003e: L200F-40F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOpens At\u003c\/strong\u003e: 200 degrees F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReset Temperature\u003c\/strong\u003e: 160 degrees F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDifferential\u003c\/strong\u003e: 40 degrees F\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMount Type\u003c\/strong\u003e: Stalk Mount\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eReset Type\u003c\/strong\u003e: Automatic\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: MODINE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 53659\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MODINE","offers":[{"title":"Default Title","offer_id":51138501902642,"sku":"53659","price":67.37,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/305533208.jpg?v=1778257869","url":"https:\/\/voomisupply.com\/products\/modine-53659-high-limit-switch-stalk-mount","provider":"Voomi Supply","version":"1.0","type":"link"}