Black Component (Left): A PTC (Positive Temperature Coefficient) Start Relay. It features quick-connect spade terminals (numbered for wiring) and connects directly to the compressor's start and run windings to assist in starting the compressor motor.
White/Brass Component (Right): An Overload Protector (often a bimetallic thermal switch). It clips onto or sits alongside the relay to protect the compressor from overheating or drawin
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