White-rodgers 3l01-120 Snap Disc Limit Thermostat

Product Description

The WHITE-RODGERS 3l01-120 is an automatic-reset snap disc limit thermostat designed for temperature control and protection in HVAC systems and household appliances. Part of the 3F/3L Snap Disc Fan Limits product family, this 3/4-inch disc device opens on temperature rise, cutting out at 120 degrees F and automatically resetting when the temperature drops back to 110 degrees F. It provides passive overheat protection without requiring manual intervention after a limit trip. Licensed HVAC technicians and appliance service technicians install this type of control as a safety limit in gas furnaces, electric heating elements, and similar thermal equipment.

This snap disc limit thermostat is suited for residential and light commercial HVAC applications as well as appliance OEM installations where a fixed-temperature, automatic-reset safety limit is required. The open-on-rise switch action makes it appropriate for high-limit protection on heating elements, heat exchangers, and exhaust assemblies. The Therm-O-Disc Type 60T11 designation and Style 610000 identify the disc and housing configuration for cross-referencing during service or replacement procurement.

Key Features

• Automatic reset operation — no manual reset required after limit trip
• Open-on-rise switch action for high-limit overheat protection
• Fixed cut-in at 110 degrees F and cut-out at 120 degrees F
• Therm-O-Disc Type 60T11, Style 610000 for precise cross-reference identification
• Compact form factor: 2 inches wide, 1.63 inches in length, 1.08 inches in height
• Manufactured in Mexico to OEM specifications

Compatibility

Designed as an OEM-style replacement snap disc limit thermostat for HVAC systems and appliances requiring a 110 degrees F cut-in, 120 degrees F cut-out, automatic-reset, open-on-rise disc limit control. Cross-references to Therm-O-Disc Type 60T11, Style 610000.

Installation Notes

Installation should be performed by a qualified HVAC technician or appliance service technician. De-energize the equipment fully and allow it to cool before removing or installing a snap disc limit. Secure the disc firmly against the sensing surface to ensure accurate temperature response — poor contact will cause erratic or delayed actuation. Follow applicable local codes and manufacturer wiring diagrams when reconnecting limit circuit terminals.

Technical Specifications

• Switch Action: Open on Rise
• Cut-In Temperature: 110 degrees F (43 degrees C)
• Cut-Out Temperature: 120 degrees F (49 degrees C)
• Therm-O-Disc Type: 60T11
• Therm-O-Disc Style: 610000
• Product Family: 3F/3L Snap Disc Fan Limits Automatic Temperature
• Length: 1.63 inches
• Height: 1.08 inches
• Width: 2 inches
• Country of Origin: Mexico

Standard Information

• Brand: WHITE-RODGERS
• Manufacturer Part Number: 3l01-120