Carrier HH12ZZ185 Limit Switch L185°F-40°F

The Carrier HH12ZZ185 is a safety limit switch used in different Carrier HVAC systems. It works as an automatic temperature control system with a specific range to avoid over heating and as an over temperature trigger system. In this case the upper limit is 185°F, when the environment temperature gets to this level the switch interrupts the circuit and thus power supply to the system to avoid further damage due to high temperature, should the temperature drop below the lower limit, then the switch opens and closes the circuit enabling normal use again.