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PTC Start Relay ZHB35-140P15 4 Connectors 1/5 1/6 HP 90W–180W 120Ω
Pin 1 → Line (L) → phase input.
Pin 2 → to the compressor's S (Start) terminal → passes through the PTC.
Pin 3 → to the compressor's M (Run) terminal.
Compressor's C (Common) → connects directly to the neutral (N).