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The Functional Devices RIBU1C Relay is a trade-standard enclosed pilot relay designed for reliable HVAC control circuit isolation and load management
While primarily used for vertical-up applications to shed standing water
000-ohm thermistor measured at 77
High Compatibility: Designed specifically for Amana and Goodman residential heating and cooling units
Rheem-Ruud 42-21786-81 Relay The Functional Devices RIBU1C RelayThe Rheem Ruud 42 21786 81 Relay is a specialized 24V component engineered for precise defrost cycle management in residential and commercial heat pump systems. This OEM Rheem defrost relay features a complex 2DPDT and 1SPST (Double Pole Double Throw and Single Pole Single Throw) contact configuration, allowing it to simultaneously control multiple high voltage and low voltage circuits. This is critical for synchronizing the reversing valve, auxiliary