Description
The Carrier HH19ZA125 is an OEM replacement L125-35F limit switch engineered to protect your furnace from dangerous overheating conditions. When heat exchanger temperatures rise to unsafe levels, this limit switch interrupts the burner circuit, preventing equipment damage and potential safety hazards.
How It Works
This limit switch is a critical safety component in forced-air furnace systems. It continuously monitors heat exchanger or plenum temperatures and automatically opens the burner circuit when temperatures reach the setpoint. Once the system cools and temperatures fall within the safe operating range, the switch resets automatically, restoring normal operation.
Key Specifications
- Manufacturer Part Number: HH19ZA125
- Switch Type: L125-35F Limit Switch
- Open (Trip) Temperature: 125°F
- Differential: 35°F
- Reset Temperature: 90°F (automatic reset)
- OEM Carrier replacement part
Features & Benefits
- Direct OEM replacement for Carrier furnace systems — ensures proper fit and reliable performance
- Automatic reset operation — restores normal furnace function once safe temperatures are reached
- Protects heat exchanger and furnace components from thermal damage caused by overheating
- Helps maintain system efficiency by shutting down burner operation under abnormal temperature conditions
- Durable construction built to withstand the demands of residential and light commercial heating applications
Application
Designed as a direct OEM replacement for Carrier furnaces, the HH19ZA125 limit switch is the correct choice for technicians performing maintenance, repairs, or safety inspections on compatible Carrier heating equipment. Always verify compatibility with your specific furnace model before installation.
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