Nordyne 626508R Limit Switch this 440Vac round dual run

this 440Vac round dual run capacitor provides the precise phase shift required to optimize both the compressor and condenser fan motor

Combustion Precision: Maintains the critical air-tight seal required for proper pressure switch operation and stable flame signals

How do I identify a failing limit switch versus an airflow issue

using it on low-voltage circuits will result in no illumination

and Arcoaire

Nordyne 626508R Limit Switch this 440Vac round dual runThe Nordyne 626508R is a critical high limit safety component designed for residential gas furnaces and air handlers. This L250 40F limit switch acts as a primary safety sensor, monitoring the heat exchanger and plenum temperatures to protect the system from thermal damage. Factory calibrated to normally closed (NC) specifications, the 626508R Auto Limit Switch will open the circuit to interrupt the burner if temperatures reach the 250F cut out