Description
Carrier HH12ZB150 Limit Switch Overview
The Carrier HH12ZB150 is an OEM replacement limit switch engineered to provide reliable overheat protection in Carrier furnaces and heating systems. With a 150°F set point and a 40°F differential, this limit switch opens at 150°F to interrupt the heating circuit when unsafe temperatures are detected, then automatically resets at 110°F once the system has cooled to a safe operating level — helping to protect heat exchangers, blower assemblies, and other critical components from thermal damage.
Key Features
- OEM Carrier replacement limit switch — direct-fit for compatible Carrier furnace models
- 150°F open (trip) set point for precise high-temperature protection
- 40°F differential — switch resets at approximately 110°F
- Automatic reset operation for convenient, reliable cycling
- Designed to interrupt burner or blower circuits upon detecting excessive heat
- Helps prevent heat exchanger damage and potential safety hazards
- Durable construction built to withstand repeated thermal cycling
Specifications
- SKU: HH12ZB150
- Brand: Carrier
- Set Point (Open): 150°F
- Differential: 40°F
- Reset Point (Close): ~110°F
- Type: Limit Switch
Application
The HH12ZB150 limit switch is a critical safety component in forced-air furnace systems. It monitors supply air or heat exchanger temperatures and opens the control circuit if temperatures exceed the rated set point, shutting down the burner to prevent overheating. This switch is a direct OEM Carrier part, making it the ideal choice for service technicians performing warranty or maintenance repairs on compatible Carrier heating equipment.
Reviews
There are no reviews yet.