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The A8581 is an on-off controller that opens its contacts upon a rise in humidity above the setpoint (opens on fault)
technicians can prevent premature wear on pneumatic actuators and controllers
it may be adapted to other brands if the shaft diameter and torque requirements align with the kit's mechanical specifications
It serves as the direct replacement for the 621721R and 6217210
or RC-4864-HH for high-acid cleanup
York 024-31601-000 Interlock R-134A The A8581 is an on-offThe York 024 31601 000 Interlock is a safety critical OEM replacement part designed for commercial HVAC equipment, including air handling units, chillers, and furnace systems. As a genuine Johnson Controls mechanical interlock, this component provides a physical secondary safety layer that prevents hazardous simultaneous operation of electrical circuits or mechanical assemblies. This HVAC safety device is essential for maintaining the operational