Supco L160 Limit Switch

The Supco L160 Limit Switch (60T11-610088) is a critical safety component for HVACR systems, designed to provide high-limit protection in furnace air streams, clothes dryers, and heat pump applications. This bimetal snap disc thermostat utilizes a 3/4-inch temperature-sensing disc to ensure rapid, positive switch action. Engineered with a fixed 160°F cut-out and a 140°F cut-in, it maintains a precise 20-degree differential to manage thermal cycles effectively. The open on rise switch action ensures the circuit breaks immediately upon reaching the high-temperature threshold, while the automatic reset feature restores connectivity once the environment cools to safe operational levels.

Built for the rigors of the field, the Supco L160 features a welded construction that preserves the integrity of current-carrying components under high-amp loads. It is rated for 25A at 120/240VAC resistive and 10A FLA at 120VAC, making it a robust replacement for widespread L-Series style temperature controls. The 1/4-inch quick disconnect terminals simplify installation in tight compartments, while the enclosed design provides superior protection against dust and debris compared to exposed disc alternatives. Professional technicians rely on its UL and CSA certification for consistent performance across diverse residential and commercial equipment.

Key Benefits:

• Precision Thermal Protection: Fixed 160°F trip point prevents heat exchanger damage and safety hazards.
• High Current Capacity: Handles up to 25A resistive loads, suitable for electric heat strips and heavy-duty motors.
• Industrial Durability: Welded 60T11 style design ensures long-term contact reliability in high-vibration environments.
• Universal Compatibility: Standard 3/4-inch disc size and quick disconnect terminals allow for rapid field replacement.
• Automatic Reset Logic: Eliminates manual intervention after transient overheat events while maintaining safety protocols.

Common Questions:

Can I use the L160 as a replacement for a manual reset limit switch?
No. The L160 is an auto-reset switch. If your original safety part requires a manual reset button, replacing it with an auto-reset control could bypass a critical safety check in your system. Always match the reset type specified by the equipment manufacturer.

What does the 20-degree differential signify for system operation?
The differential is the temperature gap between the cut-out and cut-in points. With a 160°F open and 140°F close, the system must cool by exactly 20 degrees before the switch resets, preventing the rapid "short-cycling" of burners or blowers.

Is this switch compatible with 24V control circuits?
Yes, while rated for higher voltages, the L160 is frequently used in 24VAC pilot duty circuits (rated at 125 VA) to break the signal to the gas valve or ignition board when the high-limit is reached.

Safety Notice:
Contains materials subject to California Proposition 65 warnings.

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.