Description
Restore trusted protection to your furnace or air-handler with the Carrier HH12ZB140 limit switch. This factory-authorized safety component is engineered to precisely interrupt system operation when the internal temperature rises above 140°F or falls below 40°F, safeguarding your equipment from overheating—or from operation in unsafe conditions.
Key Features
- OEM part number HH12ZB140, made by Carrier for exact fit, form and function.
- Temperature actuation range: high-limit cut-out at approximately 140°F, reset at approx. 40°F.
- Single Pole Single Throw (SPST) auto-reset configuration: automatically resets when temperature drops below threshold.
- Compact, durable design optimized for HVAC furnace and air-handler applications—lightweight (~0.08 lb) and easy to install.
- OEM rating ensures compliance with original equipment safety and performance standards.







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