Description
The Carrier HH19ZA190 190F-Opn 150F-Cls limit switch is a safety device that is used in HVAC system. It serves as a sentinel, checking pressure of air within the duct system. Limit switches are in fact miniature switches that are open or closed according to physical status. For this, it can be observed that it is influenced by temperature. Should the air temperature get to a certain level, the switch turns On, and relative measures to ensure that the HVAC system functions properly and safely are initiated. The HH19ZA190 model is an open (non-contact) model that triggers at 190°F and a closed (full contact) model at 150°F.
