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The standard threaded stem allows for straightforward field installation and maintenance
High energy efficiency ratio (EER) reduces operational overhead for end-users in 24/7 cooling applications
Simplified Manual Changeover: Eliminates sensor "hunting" between modes
Constructed for high-duty cycles
Carrier HH18HA507 Limit Switch 321894-709 The standard threaded stem allowsThe Carrier HH18HA507 Limit Switch is a critical safety component engineered for precise thermal monitoring in high output Carrier, Bryant, and Payne furnaces. This OEM furnace limit switch serves as a high limit safety cut out, designed to interrupt the electrical circuit if internal temperatures exceed safe operating parameters. Featuring an auto reset function, the switch automatically restores the circuit once temperatures drop below the 145F
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