Carrier KHAIR0201AAA Relay Kit 318172-701 Fail-Safe Reliability: Integrated spring return

Fail-Safe Reliability: Integrated spring return mechanism ensures the system defaults to a safe position during emergency shutdowns

while the top-guided design and diaphragm isolated spring chamber protect critical working parts from scale and water-borne contaminants

Reliable Control: The 24V AC coil contactor integrates easily with low-voltage control circuits typical in HVACR systems

meaning it will re-engage the circuit without technician intervention once the unit cools to the lower set point

the Multi Products 2986A is built with a dust-proof zinc housing and is UL recognized

Carrier KHAIR0201AAA Relay Kit 318172-701 Fail-Safe Reliability: Integrated spring returnThe Carrier KHAIR0201AAA Isolation Relay Kit is a crucial OEM component designed for split system heat pumps, specifically 2 stage models including the CH17NA series. This 24V, 50 60Hz relay functions as a low ambient control bypass, effectively switching the controller out of the outdoor fan motor circuit during heating and defrost cycles to ensure stable head pressures and prevent motor stalling. Engineering grade electrical isolation protects