Copeland Comfort Control (White Rodgers) 3L11-325 Limit Switch

The Copeland Comfort Control (White Rodgers) 3L11-325 is a professional-grade 1/2" bimetal disc limit switch designed for high-temperature safety and regulation in HVACR systems. Engineered with a fixed 315 to 335 degrees F trip point, this 36T21-10864 style control utilizes an aluminum disc cup for rapid thermal response and high-speed contact separation. As an auto reset limit switch, it features SPST open on rise logic, ensuring the circuit breaks immediately when reaching the upper temperature threshold and restores once the system cools by the 50-degree differential.

Constructed for durability in demanding contractor environments, this high temperature limit control includes a loose ring stainless steel mounting bracket for versatile surface installation. The 1/4" quick connect terminals facilitate fast field wiring, making it a reliable Copeland Comfort Control (White Rodgers) replacement part for furnaces, boilers, and industrial heating equipment. Rated for 15A at 120VAC and 10A at 240VAC, this snap-action thermostat provides precise thermal protection without the common failures associated with inferior components.

Key Benefits for HVACR Applications

• Fixed Temperature Precision: Factory-set 315-335°F range eliminates the need for field adjustments and ensures consistent safety cut-out.
• Snap-Action Reliability: The 36T21 thermal switch mechanism minimizes internal arcing, extending the service life of electrical contacts.
• Universal Mounting: Stainless steel brackets with loose ring design allow for easy alignment on uneven surfaces.
• Inductive Load Handling: Rated for 3.0 FLA and 12.0 LRA at 120VAC, making it suitable for motor-driven blower applications.

Common Questions & Technical Support

Is the 3L11-325 compatible with 240V systems?
Yes, this switch is rated for 120/240 VAC applications, supporting up to 10A resistive loads at 240V.

What is the difference between open on rise and close on rise?
This limit switch is open on rise, meaning it breaks the electrical circuit when the temperature exceeds 335°F to prevent overheating.

Does this switch require manual intervention after a trip?
No, the Copeland Comfort Control (White Rodgers) 3L11-325 features an automatic reset, re-closing the circuit once the temperature drops below the differential setpoint.

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.