Carrier HH12ZB230 Limit Switch For technicians managing older thermostatic

For technicians managing older thermostatic radiator valve (TRV) installations

Whether you are servicing a heat pump

The 272804A and 272804A/U are identical components

maintaining setpoint accuracy over long-term operation in commercial environments

Operating at 220V

Carrier HH12ZB230 Limit Switch For technicians managing older thermostaticThe Carrier HH12ZB230 Limit Switch is a critical safety component designed for precise thermal monitoring in high output furnace and air handler applications. As an OEM Carrier furnace limit switch, this device features an automatic reset mechanism and is calibrated for an opening temperature range of 190F to 230F. This part is engineered to interrupt the burner or heating element circuit if the internal plenum temperature exceeds safe operating