Trane THT0485 Limit Switch
The Trane THT0485 Limit Switch is a critical fixed-temperature safety component engineered for precise thermal monitoring within HVAC furnace gas-fired heating assemblies. Operating on a 115-140F temperature range, this automatic reset limit switch serves as a primary high-limit safety control, monitoring heat exchanger temperatures to prevent thermal runaway. Designed specifically for Trane and American Standard residential furnaces, the THT0485 ensures the burner circuit opens if plenum temperatures exceed the maximum safety threshold of 140°F and automatically closes once it cools to 115°F. This SPST (Single Pole Single Throw) thermal switch is an essential OEM replacement part for technicians troubleshooting furnace short cycling or overheating limit trips. Built with a robust bimetal sensing element and standard 1/4-inch spade terminals, it provides reliable thermal protection and maintains system integrity in high-cycle environments.
Key Benefits for Technicians:- Precise Thermal Calibration: Factory-set 115-140°F range ensures accurate high-limit protection and prevents heat exchanger damage.
- Automatic Reset Functionality: Eliminates the need for manual intervention, allowing the system to resume operation once safe temperatures are achieved.
- OEM Compatibility: Exact Trane replacement part ensures proper fitment and electrical alignment with existing wiring harnesses.
- Durable Bimetal Construction: Engineered for longevity in high-temperature zones to prevent nuisance trips and premature failure.
What causes a Trane THT0485 to trip frequently?
Frequent tripping is usually indicative of restricted airflow, often caused by a clogged air filter, blocked return vents, or a failing blower motor rather than a faulty switch.
Can this limit switch be used in 24V and 120V circuits?
Yes, this switch is designed for use in standard HVAC control circuits, typically functioning within 24V signal paths to the integrated furnace control board.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $95.47
-65%$95.47
$33.41Trane THT0485 Limit Switch
The Trane THT0485 Limit Switch is a critical fixed-temperature safety component engineered for precise thermal monitoring within HVAC furnace gas-fired heating assemblies. Operating on a 115-140F temperature range, this automatic reset limit switch serves as a primary high-limit safety control, monitoring heat exchanger temperatures to prevent thermal runaway. Designed specifically for Trane and American Standard residential furnaces, the THT0485 ensures the burner circuit opens if plenum temperatures exceed the maximum safety threshold of 140°F and automatically closes once it cools to 115°F. This SPST (Single Pole Single Throw) thermal switch is an essential OEM replacement part for technicians troubleshooting furnace short cycling or overheating limit trips. Built with a robust bimetal sensing element and standard 1/4-inch spade terminals, it provides reliable thermal protection and maintains system integrity in high-cycle environments.
Key Benefits for Technicians:- Precise Thermal Calibration: Factory-set 115-140°F range ensures accurate high-limit protection and prevents heat exchanger damage.
- Automatic Reset Functionality: Eliminates the need for manual intervention, allowing the system to resume operation once safe temperatures are achieved.
- OEM Compatibility: Exact Trane replacement part ensures proper fitment and electrical alignment with existing wiring harnesses.
- Durable Bimetal Construction: Engineered for longevity in high-temperature zones to prevent nuisance trips and premature failure.
What causes a Trane THT0485 to trip frequently?
Frequent tripping is usually indicative of restricted airflow, often caused by a clogged air filter, blocked return vents, or a failing blower motor rather than a faulty switch.
Can this limit switch be used in 24V and 120V circuits?
Yes, this switch is designed for use in standard HVAC control circuits, typically functioning within 24V signal paths to the integrated furnace control board.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
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Description
The Trane THT0485 Limit Switch is a critical fixed-temperature safety component engineered for precise thermal monitoring within HVAC furnace gas-fired heating assemblies. Operating on a 115-140F temperature range, this automatic reset limit switch serves as a primary high-limit safety control, monitoring heat exchanger temperatures to prevent thermal runaway. Designed specifically for Trane and American Standard residential furnaces, the THT0485 ensures the burner circuit opens if plenum temperatures exceed the maximum safety threshold of 140°F and automatically closes once it cools to 115°F. This SPST (Single Pole Single Throw) thermal switch is an essential OEM replacement part for technicians troubleshooting furnace short cycling or overheating limit trips. Built with a robust bimetal sensing element and standard 1/4-inch spade terminals, it provides reliable thermal protection and maintains system integrity in high-cycle environments.
Key Benefits for Technicians:- Precise Thermal Calibration: Factory-set 115-140°F range ensures accurate high-limit protection and prevents heat exchanger damage.
- Automatic Reset Functionality: Eliminates the need for manual intervention, allowing the system to resume operation once safe temperatures are achieved.
- OEM Compatibility: Exact Trane replacement part ensures proper fitment and electrical alignment with existing wiring harnesses.
- Durable Bimetal Construction: Engineered for longevity in high-temperature zones to prevent nuisance trips and premature failure.
What causes a Trane THT0485 to trip frequently?
Frequent tripping is usually indicative of restricted airflow, often caused by a clogged air filter, blocked return vents, or a failing blower motor rather than a faulty switch.
Can this limit switch be used in 24V and 120V circuits?
Yes, this switch is designed for use in standard HVAC control circuits, typically functioning within 24V signal paths to the integrated furnace control board.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
