Description
The Carrier HH12ZB240 is an OEM auto-reset (AUTO) limit switch engineered to protect furnaces and heating equipment from dangerous overheating conditions. Rated for a temperature range of 200–240°F, this limit switch automatically interrupts the burner or blower circuit when temperatures exceed the safe operating threshold, then resets itself once temperatures return to normal — eliminating the need for manual intervention after a nuisance trip.
Key Features
- Auto-reset (AUTO) operation — automatically restores circuit once safe temperatures are reached
- Operating temperature range: 200–240°F for precise high-limit protection
- OEM Carrier replacement part — ensures proper fit and reliable performance
- Protects heat exchangers, burners, and blower assemblies from thermal damage
- Direct drop-in replacement for compatible Carrier furnace models
Application
Designed as a direct OEM replacement for Carrier residential and light commercial furnaces, the HH12ZB240 limit switch is a critical safety component that monitors heat exchanger temperatures. When airflow is restricted or a fault condition causes temperatures to rise above the rated threshold, the switch opens the control circuit to shut down the burner, preventing equipment damage and potential fire hazards.
Why Choose the Carrier HH12ZB240?
- Genuine Carrier part for guaranteed compatibility and longevity
- Auto-reset design minimizes service calls caused by manual-reset requirements
- Essential safety component for maintaining furnace reliability and code compliance
- Ideal for HVAC technicians performing furnace maintenance, repair, or replacement
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