White-Rodgers 3L11-250 Limit Switch

The White-Rodgers 3L11-250 is a high-performance 1/2" bimetal disc limit switch designed for critical thermal protection in HVACR systems. Engineering to provide precise temperature regulation, this SPST open on rise switch activates between 224°F and 256°F to terminate the circuit during overheat conditions. Featuring an automatic reset with a 30°F differential, it ensures the system safely resumes operation once ambient temperatures drop to the 194°F to 226°F range. This Therm-O-Disc style 10863 component (internally 36T21-10863) is housed in a durable aluminum disc cup with a stainless steel flange mount for universal installation. Equipped with 1/4" quick connect terminals, the high-limit thermostat switch integrates seamlessly into furnace safety chains or industrial appliance controls. This industrial-grade 3L11 series limit control is a reliable solution for technicians requiring a drop-in replacement that maintains original equipment safety specifications without the need for manual intervention.

• Precision Safety: Fixed temperature range of 224°F to 256°F prevents heat damage to secondary components.
• Streamlined Installation: Features 1/4" quick connect terminations and a loose ring flange for versatile mounting.
• Automatic Reset Logic: A 30°F differential eliminates the need for manual system resets after a temporary thermal event.
• HVACR Grade Durability: Bimetal disc construction rated for up to 15A at 120VAC, suitable for various furnace and appliance applications.

Is the White-Rodgers 3L11-250 universal?
While the mounting bracket is universal, always verify the fixed setpoint (224-256°F) and SPST switch action match your specific equipment’s safety requirements.

What is the difference between 3L11-250 and 3L11-200?
The 3L11-250 is designed for a higher thermal limit. Using a switch with an incorrect temperature rating can lead to premature tripping or failure to protect against overheating.

Can I use this for a blower fan motor?
No, this is an Open on Rise limit switch. For blower fan applications requiring the fan to start when the plenum heats up, you must use a Close on Rise (F series) thermostat.

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.