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Reliability is paramount in sub-freezing conditions
Applying 24V will result in immediate coil failure
High-Temperature Durability: The Kanthol rod maintains structural integrity in environments up to 1800°F
typically found in 3 to 7 section configurations
Featuring a 120V coil
Carrier HH19ZA175 Limit Switch 318820-201 Reliability is paramount in sub-freezingThe Carrier HH19ZA175 Limit Switch is a critical safety component designed for precise thermal monitoring in residential and commercial HVAC equipment. Optimized for 125 VAC VDC systems, this normally closed (NC) limit actuator operates with a specific 175F open temperature and a 135F close temperature. Built as a Pro Dim high temperature switch, it effectively prevents heat exchanger damage by breaking the 24V control circuit if internal temperatures
