The York S1-024-35799-000 Auxiliary Switch is a critical HVAC contactor accessory designed for field installation in compatible 1-pole and 2-pole contactor assemblies

Verify the model number on the trap nameplate

or 12A49 vent limiter for indoor installations

the 0556031 is the lead-free (LF) version of the original Series N36

normally open contact configuration

Schneider Electric (Erie) AG23B02A Actuator Els PW 17895 The York S1-024-35799-000 Auxiliary SwitchThe Schneider Electric (Erie) AG23B02A Actuator is a field proven solution for reliable two position control in hydronic systems. This 120Vac motorized zone valve actuator features a normally open (N. O.) configuration, making it a critical fail safe component for commercial and residential HVAC applications. Built as part of the industry standard Erie PopTop series, it offers a spring return mechanism that ensures the valve returns to its original