Copeland Comfort Control (White Rodgers) 3L01-180 Limit Switch

The White Rodgers 3L01-180 Limit Switch is a heavy-duty, 3/4-inch snap disc thermostat designed for high-limit safety and blower control in residential and commercial furnaces. Built by Copeland Comfort Control, this SPST (Single Pole Single Throw) switch provides precise thermal regulation with a fixed 180 degree F cut-out temperature to prevent heat exchanger damage or hazardous overheating. As a professional-grade fixed temperature limit control, it features an open on rise switch action, meaning it breaks the electrical circuit immediately upon reaching its setpoint to trigger a safety shutdown until the system cools.

Engineered for high-cycle reliability, the 3L01-180 includes an automatic reset mechanism that closes the circuit once the ambient temperature drops to the 140 degree F cut-in threshold. This Therm-O-Disc 60T11-610013 style control is a standard for many HVACR applications, offering universal airstream mounting via an integral oval flange. It is rated for 10A at 120VAC and 5A at 240VAC under full load conditions, making it a rugged furnace limit switch replacement. The package includes tab-to-screw terminal adapters to ensure compatibility with both quick-connect and screw-type wiring harnesses found in the field.

• Universal Compatibility: Matches standard 3/4-inch snap disc footprints, making it the preferred 60T11-610013 replacement across multiple furnace brands.
• Automatic Reset Logic: Eliminates manual intervention by re-engaging once the temperature differential is met at 140°F.
• Precision Safety: High-speed contact separation protects the heat exchanger from high-limit excursions.
• Field Ready: Supplied with 1/4-inch quick-connect terminals and adapters for seamless installation into existing wiring looms.

• What causes this limit switch to trip repeatedly? Frequent tripping usually indicates restricted airflow due to a dirty filter, failing blower motor, or blocked return vents rather than a faulty switch.
• Can I use this for a fan control application? While "L" denotes a limit control, the 140°F/180°F range is often utilized in blower logic; however, always verify the specific "open on rise" logic matches your schematic.
• How do I test if the snap disc is failing? Use a multimeter to check for continuity at room temperature; since this is open on rise, it should show a closed circuit (continuity) until it reaches 180°F.

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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.