Carrier HH19ZA221 Limit Switch 326058-755 this is an auto limit

this is an auto limit switch

Using a lower RPM motor will significantly reduce airflow

while the double-disc design offers redundant sealing for maximum reliability

and standing pilot furnace systems requiring a reliable thermo-safety dropout

this module is the direct replacement for legacy part numbers 100133537 and ARM1002

Carrier HH19ZA221 Limit Switch 326058-755 this is an auto limitThe Carrier HH19ZA221 Limit Switch is a critical safety component designed for precise thermal monitoring in high efficiency furnace and air handler applications. This OEM replacement limit switch operates as a normally closed contact that opens at a fixed temperature of 220 degrees Fahrenheit to prevent heat exchanger damage or unsafe operating conditions. Featuring a L220 40F calibration, this fixed temperature limit control ensures the system shuts