Carrier HH12ZB190 Limit Switch Common Questions: Can I use

Common Questions: Can I use a 2-pole contactor to replace a 1-pole model

Key Benefits Precision Thermal Protection: Fixed 250°F trip point provides a definitive safety cutoff to prevent furnace overheating

providing consistent switching logic and preventing system downtime caused by carbon buildup or pitted contacts

Automatic Reset: Eliminates the need for manual intervention after temporary temperature spikes

If the tank does not fill

Carrier HH12ZB190 Limit Switch Common Questions: Can I useThe Carrier HH12ZB190 Limit Switch is a critical OEM safety component engineered for HVAC high limit protection in gas furnaces and packaged units. As an automatic reset limit switch, this part is designed to open the electrical circuit when internal plenum temperatures reach 190F (cut out) and automatically close once the temperature drops to 150F (cut in). This Normally Closed (NC) switch features a 3 inch insertion length, ensuring accurate sensing