
Trane CNT4825 Limit Switch
The Trane CNT4825 Limit Switch is a mission-critical safety component engineered for precision thermal monitoring in residential and light commercial HVAC systems. This 170F SPST N/C A/R Limit Switch serves as a reliable furnace high limit sensor, designed to interrupt the electrical circuit if internal temperatures exceed the 170 degree Fahrenheit threshold. Utilizing a single-pole, single-throw (SPST) normally closed (N/C) configuration, this bi-metal thermal control ensures that blowers and burners are deactivated during potential overheat conditions, preventing heat exchanger damage. As an auto-reset HVAC limit switch, the Trane CNT4825 automatically restores continuity once temperatures return to a safe operating range, reducing unnecessary downtime while maintaining strict safety protocols. This replacement part is a direct OEM Trane limit switch, providing the exact voltage and amperage ratings required to maintain the structural integrity and performance specifications of compatible Trane and American Standard furnaces.
Key Benefits of the Trane CNT4825- Precise Thermal Protection: Opens at a factory-calibrated 170°F to prevent critical equipment failure from overheating.
- Automatic Reset Functionality: The A/R design eliminates the need for manual intervention after the system cools, ensuring continuous automation.
- OEM Compatibility: Specifically designed as a drop-in replacement for Trane and American Standard HVAC units to ensure electrical and mechanical alignment.
- Durable Bi-Metal Construction: Engineered for high-cycle reliability and consistent temperature response in demanding heating environments.
What causes a Trane CNT4825 to trip frequently?
Frequent tripping is often a symptom of restricted airflow, such as a clogged air filter, blocked return ducts, or a failing blower motor, rather than a faulty switch.
Is this switch compatible with multi-stage furnaces?
Yes, the Trane CNT4825 is utilized across various single-stage and multi-stage Trane furnace models where a 170°F safety limit is required.
Can I bypass this switch for testing?
While technicians may briefly jump the switch for diagnostic continuity tests, the system must never be operated permanently without a functional 170F SPST N/C limit switch due to fire and equipment hazards.
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: $145.58
-65%$145.58
$50.95Trane CNT4825 Limit Switch
The Trane CNT4825 Limit Switch is a mission-critical safety component engineered for precision thermal monitoring in residential and light commercial HVAC systems. This 170F SPST N/C A/R Limit Switch serves as a reliable furnace high limit sensor, designed to interrupt the electrical circuit if internal temperatures exceed the 170 degree Fahrenheit threshold. Utilizing a single-pole, single-throw (SPST) normally closed (N/C) configuration, this bi-metal thermal control ensures that blowers and burners are deactivated during potential overheat conditions, preventing heat exchanger damage. As an auto-reset HVAC limit switch, the Trane CNT4825 automatically restores continuity once temperatures return to a safe operating range, reducing unnecessary downtime while maintaining strict safety protocols. This replacement part is a direct OEM Trane limit switch, providing the exact voltage and amperage ratings required to maintain the structural integrity and performance specifications of compatible Trane and American Standard furnaces.
Key Benefits of the Trane CNT4825- Precise Thermal Protection: Opens at a factory-calibrated 170°F to prevent critical equipment failure from overheating.
- Automatic Reset Functionality: The A/R design eliminates the need for manual intervention after the system cools, ensuring continuous automation.
- OEM Compatibility: Specifically designed as a drop-in replacement for Trane and American Standard HVAC units to ensure electrical and mechanical alignment.
- Durable Bi-Metal Construction: Engineered for high-cycle reliability and consistent temperature response in demanding heating environments.
What causes a Trane CNT4825 to trip frequently?
Frequent tripping is often a symptom of restricted airflow, such as a clogged air filter, blocked return ducts, or a failing blower motor, rather than a faulty switch.
Is this switch compatible with multi-stage furnaces?
Yes, the Trane CNT4825 is utilized across various single-stage and multi-stage Trane furnace models where a 170°F safety limit is required.
Can I bypass this switch for testing?
While technicians may briefly jump the switch for diagnostic continuity tests, the system must never be operated permanently without a functional 170F SPST N/C limit switch due to fire and equipment hazards.
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 CNT4825 Limit Switch is a mission-critical safety component engineered for precision thermal monitoring in residential and light commercial HVAC systems. This 170F SPST N/C A/R Limit Switch serves as a reliable furnace high limit sensor, designed to interrupt the electrical circuit if internal temperatures exceed the 170 degree Fahrenheit threshold. Utilizing a single-pole, single-throw (SPST) normally closed (N/C) configuration, this bi-metal thermal control ensures that blowers and burners are deactivated during potential overheat conditions, preventing heat exchanger damage. As an auto-reset HVAC limit switch, the Trane CNT4825 automatically restores continuity once temperatures return to a safe operating range, reducing unnecessary downtime while maintaining strict safety protocols. This replacement part is a direct OEM Trane limit switch, providing the exact voltage and amperage ratings required to maintain the structural integrity and performance specifications of compatible Trane and American Standard furnaces.
Key Benefits of the Trane CNT4825- Precise Thermal Protection: Opens at a factory-calibrated 170°F to prevent critical equipment failure from overheating.
- Automatic Reset Functionality: The A/R design eliminates the need for manual intervention after the system cools, ensuring continuous automation.
- OEM Compatibility: Specifically designed as a drop-in replacement for Trane and American Standard HVAC units to ensure electrical and mechanical alignment.
- Durable Bi-Metal Construction: Engineered for high-cycle reliability and consistent temperature response in demanding heating environments.
What causes a Trane CNT4825 to trip frequently?
Frequent tripping is often a symptom of restricted airflow, such as a clogged air filter, blocked return ducts, or a failing blower motor, rather than a faulty switch.
Is this switch compatible with multi-stage furnaces?
Yes, the Trane CNT4825 is utilized across various single-stage and multi-stage Trane furnace models where a 170°F safety limit is required.
Can I bypass this switch for testing?
While technicians may briefly jump the switch for diagnostic continuity tests, the system must never be operated permanently without a functional 170F SPST N/C limit switch due to fire and equipment hazards.
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.












