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The MARS M39022 limit switch features a snap disc that closes at 180°F and opens at 140°F, activating upon temperature rise. It is designed for fan or blower control, offers easy installation with mounting holes that match a standard 3/4 in. snap disc, and has an automatic reset function.
Limit switch for temperature regulation in HVAC systems, featuring automatic reset and UL/CSA listings.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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