Carrier HH19ZA175 Limit Switch 318820-201 High-Temperature Durability: The Kanthol rod

High-Temperature Durability: The Kanthol rod maintains structural integrity in environments up to 1800°F

typically found in 3 to 7 section configurations

This unit provides the necessary electrical discharge to ensure precise ignition across various atmospheric and power burner configurations without dropping voltage under heavy load

If the application involves a heat pump

Reliability is paramount in sub-freezing conditions

Carrier HH19ZA175 Limit Switch 318820-201 High-Temperature Durability: The Kanthol rodThe 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