Description
The Carrier HH12ZB280 is a factory-engineered insulated limit switch designed to protect furnaces and heating systems from dangerous overtemperature conditions. With a fixed trip point of 280°F and a 40°F differential, this switch automatically opens the circuit when the heat exchanger or plenum temperature reaches the set limit, then resets once the temperature drops back to a safe operating range — providing reliable, automatic thermal protection.
The 3-inch insulated insertion design allows for secure mounting in ductwork or furnace plenum applications while the insulated construction helps prevent nuisance trips and protects wiring from radiant heat. This is a genuine Carrier OEM replacement part, ensuring a precise fit and dependable performance in compatible Carrier heating systems.
Key Features
- Fixed trip temperature: 280°F
- Differential: 40°F (resets at approximately 240°F)
- Insertion depth: 3 inches
- Insulated limit switch construction
- Genuine Carrier OEM replacement part
- Designed for furnace and air handler plenum applications
- Automatic reset operation
Application
The HH12ZB280 is a direct OEM replacement limit switch for compatible Carrier furnaces and heating equipment. It serves as a critical safety device, interrupting the burner or heating circuit when excessive temperatures are detected, helping to prevent heat exchanger damage, equipment failure, or fire hazards.
Specifications
- SKU: HH12ZB280
- Brand: Carrier
- Trip Temperature: 280°F
- Differential: 40°F
- Insertion Length: 3 inches
- Type: Insulated Limit Switch
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