Trane SWT3980 Limit Switch

The Trane SWT3980 Limit Switch is a high-performance safety component engineered for precision thermal monitoring in commercial and industrial HVACR systems. As an OEM L115-10F Limit Switch, this device features a fixed set point, opening the circuit when temperatures reach 115°F and automatically resetting once the temperature drops by a 10°F differential. This snap-action mechanism ensures immediate response times, protecting heat exchangers and blower assemblies from critical overheating. Designed for versatility, the SWT3980 supports multiple installation configurations including surface mounting and DIN rail integration, making it a reliable choice for field replacements. With a robust electrical rating of 20A at 240VAC and a NEMA 1 enclosure rating, this limit switch provides superior durability in demanding environments. For contractors requiring a dependable HVAC safety switch, this Trane component offers the exact replacement limit switch specifications needed to maintain system integrity and operational efficiency.

• Automatic Reset: Features a 10°F temperature differential to restore system operation without manual intervention after cooling.
• High Load Capacity: Rated for 20A at 240VAC, allowing for compatibility with heavy-duty air handlers and furnaces.
• Flexible Mounting: Universal design supports both traditional surface mounting and modern DIN rail systems.
• Compact Form Factor: Small footprint (1" x 6" x 4") allows for easy integration into tight control cabinets.

What does the L115-10F specification indicate?
The "L" stands for Limit. 115 represents the opening temperature in degrees Fahrenheit, and 10 designates the temperature differential (in degrees) required for the switch to reset to a closed position.

Is this switch compatible with non-Trane systems?
While designed as a Trane OEM part, the electrical ratings and standard mounting options allow it to function in various HVACR applications requiring a 115°F thermal limit.

Can this be used for both heating and cooling applications?
Yes, its primary function is as a high-limit safety cut-out to prevent equipment damage due to restricted airflow or mechanical failure in heat-producing components.

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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.