Carrier HH19ZA175 Limit Switch 318820-201 This unit provides the necessary

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

Applying 24V will result in immediate coil failure

Reliability is paramount in sub-freezing conditions

Enhanced Diagnostics: Integrated circuitry coordinates with system safety switches to monitor HVAC airflow and prevent component overheating

The Schneider Electric (Barber Colman) AT-603 Subbase is a precision-engineered mounting platform designed for single thermostat selector switch applications

Carrier HH19ZA175 Limit Switch 318820-201 This unit provides the necessaryThe 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