White Rodgers 3L12-220 Limit Switch
The White Rodgers 3L12-220 Limit Switch is a critical safety component designed for 1/2" disc applications in gas-fired furnaces, unit heaters, and rooftop units. This rollout limit switch features a precision bimetal disc that ensures an open on rise action when temperatures hit the fixed 220-degree F setpoint. Engineered for high-temperature circuit protection, this SPST (Single Pole Single Throw) switch provides a reliable manual reset mechanism, preventing the automated cycling of a system that has experienced a flame rollout or over-temperature event. It serves as a direct replacement for 20058704 and is identified by the model number 36TX16-611865. Built to handle electrical loads up to 15A at 120VAC or 10A at 240VAC, this component integrates seamlessly with existing White Rodgers controls. Professional installation is recommended to ensure the sensor is correctly positioned to detect airflow issues or combustion failure, maintaining strict HVAC safety compliance across residential and commercial heating platforms.
Key Benefits- Precise Thermal Response: Fixed 220°F cut-out provides immediate circuit interruption during flame rollout or overheating.
- Manual Reset Safety: Requires manual intervention to restore system operation, ensuring a technician can inspect for underlying combustion issues.
- Universal HVAC Compatibility: Designed for use in wide-ranging gas-fired heating systems, including unit heaters and rooftop packages.
- Heavy-Duty Electrical Rating: High-capacity bimetal contacts support up to 15 Amps at 120V for long-term switching reliability.
- Drop-In Replacement: Direct physical and electrical match for part number 20058704, simplifying field repairs.
Is the 3L12-220 an automatic reset switch?
No, this is a manual reset switch. Once the temperature reaches the 220°F limit and the contacts open, the system will remain off until the button on the back of the switch is manually depressed by a technician.
What causes this rollout switch to trip?
This switch typically trips due to flame rollout, often caused by a cracked heat exchanger, clogged flue, or insufficient primary air for combustion.
Can I use this switch in both 120V and 240V systems?
Yes, the 3L12-220 is rated for 15A at 120VAC and 10A at 240VAC, making it suitable for a variety of furnace and heater control circuits.
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.
White Rodgers 3L12-220 Limit Switch
The White Rodgers 3L12-220 Limit Switch is a critical safety component designed for 1/2" disc applications in gas-fired furnaces, unit heaters, and rooftop units. This rollout limit switch features a precision bimetal disc that ensures an open on rise action when temperatures hit the fixed 220-degree F setpoint. Engineered for high-temperature circuit protection, this SPST (Single Pole Single Throw) switch provides a reliable manual reset mechanism, preventing the automated cycling of a system that has experienced a flame rollout or over-temperature event. It serves as a direct replacement for 20058704 and is identified by the model number 36TX16-611865. Built to handle electrical loads up to 15A at 120VAC or 10A at 240VAC, this component integrates seamlessly with existing White Rodgers controls. Professional installation is recommended to ensure the sensor is correctly positioned to detect airflow issues or combustion failure, maintaining strict HVAC safety compliance across residential and commercial heating platforms.
Key Benefits- Precise Thermal Response: Fixed 220°F cut-out provides immediate circuit interruption during flame rollout or overheating.
- Manual Reset Safety: Requires manual intervention to restore system operation, ensuring a technician can inspect for underlying combustion issues.
- Universal HVAC Compatibility: Designed for use in wide-ranging gas-fired heating systems, including unit heaters and rooftop packages.
- Heavy-Duty Electrical Rating: High-capacity bimetal contacts support up to 15 Amps at 120V for long-term switching reliability.
- Drop-In Replacement: Direct physical and electrical match for part number 20058704, simplifying field repairs.
Is the 3L12-220 an automatic reset switch?
No, this is a manual reset switch. Once the temperature reaches the 220°F limit and the contacts open, the system will remain off until the button on the back of the switch is manually depressed by a technician.
What causes this rollout switch to trip?
This switch typically trips due to flame rollout, often caused by a cracked heat exchanger, clogged flue, or insufficient primary air for combustion.
Can I use this switch in both 120V and 240V systems?
Yes, the 3L12-220 is rated for 15A at 120VAC and 10A at 240VAC, making it suitable for a variety of furnace and heater control circuits.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The White Rodgers 3L12-220 Limit Switch is a critical safety component designed for 1/2" disc applications in gas-fired furnaces, unit heaters, and rooftop units. This rollout limit switch features a precision bimetal disc that ensures an open on rise action when temperatures hit the fixed 220-degree F setpoint. Engineered for high-temperature circuit protection, this SPST (Single Pole Single Throw) switch provides a reliable manual reset mechanism, preventing the automated cycling of a system that has experienced a flame rollout or over-temperature event. It serves as a direct replacement for 20058704 and is identified by the model number 36TX16-611865. Built to handle electrical loads up to 15A at 120VAC or 10A at 240VAC, this component integrates seamlessly with existing White Rodgers controls. Professional installation is recommended to ensure the sensor is correctly positioned to detect airflow issues or combustion failure, maintaining strict HVAC safety compliance across residential and commercial heating platforms.
Key Benefits- Precise Thermal Response: Fixed 220°F cut-out provides immediate circuit interruption during flame rollout or overheating.
- Manual Reset Safety: Requires manual intervention to restore system operation, ensuring a technician can inspect for underlying combustion issues.
- Universal HVAC Compatibility: Designed for use in wide-ranging gas-fired heating systems, including unit heaters and rooftop packages.
- Heavy-Duty Electrical Rating: High-capacity bimetal contacts support up to 15 Amps at 120V for long-term switching reliability.
- Drop-In Replacement: Direct physical and electrical match for part number 20058704, simplifying field repairs.
Is the 3L12-220 an automatic reset switch?
No, this is a manual reset switch. Once the temperature reaches the 220°F limit and the contacts open, the system will remain off until the button on the back of the switch is manually depressed by a technician.
What causes this rollout switch to trip?
This switch typically trips due to flame rollout, often caused by a cracked heat exchanger, clogged flue, or insufficient primary air for combustion.
Can I use this switch in both 120V and 240V systems?
Yes, the 3L12-220 is rated for 15A at 120VAC and 10A at 240VAC, making it suitable for a variety of furnace and heater control circuits.
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.
