The White Rodgers 3L12-300 is a 1/2" SPST manual reset flame rollout switch designed to enhance safety in gas-fired heating systems. Its primary function is to detect and respond to abnormal flame conditions by interrupting power when temperatures exceed safe thresholds.Key Specifications:
This switch is suitable for use in gas-fired furnaces, unit heaters, and rooftop units. Modern furnace designs often incorporate multiple manual reset limits like the 3L12-300 to improve safety and prevent flame rollout conditions.Available now at Beenimax.com – your trusted source for HVAC parts.
- Cut-Out Temperature: 300°F
- Switch Type: Single Pole, Single Throw (SPST)
- Operation: Manual Reset
- Action: Opens on temperature rise
- Terminals: 1/4" Quick Connect
- Mounting Size: 1/2" snap disc
This switch is suitable for use in gas-fired furnaces, unit heaters, and rooftop units. Modern furnace designs often incorporate multiple manual reset limits like the 3L12-300 to improve safety and prevent flame rollout conditions.Available now at Beenimax.com – your trusted source for HVAC parts.

