Trane SWT1635 Limit Switch

The Trane SWT1635 Limit Switch is a critical OEM replacement component designed for high-limit thermal protection in residential and light commercial HVAC units. Engineered with a 3-inch insertion depth, this furnace limit switch monitors internal plenum temperatures to prevent heat exchanger damage. This L180-30 limit switch is factory-calibrated to trip and open the circuit at 180°F, featuring an automatic reset that restores operation once the temperature drops to 150°F. As a direct Trane C340366P06 replacement, it maintains the precise safety parameters required for American Standard and Trane equipment. The robust copper contact construction and screw terminal design ensure a low-resistance electrical connection and reliable 3-way circuit integration. Whether you are troubleshooting a furnace overheating code or performing scheduled maintenance, using this genuine OEM HVAC safety control ensures the system operates within manufacturer-specified thermal boundaries, protecting the blower motor and heat exchanger from premature failure.

Key Benefits for Technicians:

• Precise Thermal Calibration: Reliable 180°F open and 150°F close thresholds prevent nuisance tripping while ensuring absolute safety.
• Direct OEM Compatibility: Verified replacement for C340366P06 and SWT01635, ensuring an exact fit in Trane and American Standard furnace cabinets.
• Durable Construction: Features high-quality copper contacts and a rugged 3-inch probe for accurate temperature sensing within the airflow.
• Simplified Installation: Standard wall-mount configuration with screw terminals allows for rapid field replacement during service calls.
• Automatic Reset Operation: Eliminates the need for manual intervention after a temporary high-limit event once safe temperatures are reached.

Common Questions:

Is the SWT1635 a direct replacement for my older Trane limit switch?
Yes, the Trane SWT1635 is the official superseding part for several older models, most notably serving as the direct replacement for part number C340366P06.

What causes a limit switch like the L180-30 to trip frequently?
Frequent tripping usually indicates restricted airflow. Check for a clogged air filter, blocked return ducts, or a failing blower motor, which can cause the heat exchanger to reach the 180°F limit.

Can I use this switch in American Standard branded furnaces?
Yes. Because American Standard and Trane share the same manufacturing platforms, this OEM replacement Trane SWT1635 is fully compatible with American Standard units that specify a 180-30 limit.

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.