White-Rodgers 3L09-23 Limit Switch Nuisance trips are typically caused

Nuisance trips are typically caused by restricted airflow

This snap-disc limit switch is often found in high-efficiency forced-air systems where maintaining exact thermal boundaries is non-negotiable

Direct Supercession: Seamlessly replaces the legacy 311100 gasket with updated material specs for improved longevity

Replacing a drifted or fouled limit control with this factory-spec HVAC high limit restores the original safety parameters of the equipment

White-Rodgers 3L09-23 Limit Switch Nuisance trips are typically causedThe White Rodgers 3L09 23 is a high performance board mount limit control engineered for critical temperature management in forced air systems. This 1 2" bimetal disc limit switch features a 3. 12" insertion length, making it an ideal choice for placement in the air stream where rapid thermal response is required. Designed with Open on Rise switch action, the SPST contacts are factory calibrated to open at a fixed 170F and automatically close at 150F.