HVAC S Coded Power Interface

M12 S Coding 3 and 4 Core AC Power Connector for HVAC Systems This M12 S coding 3 core and 4 core connector belongs to our M12 Circular Connector series. It is specifically designed for AC power delivery in HVAC heating ventilation and air conditioning systems and industrial cooling equipment. The S coding configuration handles higher AC voltage than standard M12 connectors. The three pin version carries live neutral and protective earth for single phase AC. The four pin version adds a second live wire for split phase or two phase AC power. This pinout matches typical AC power distribution schemes used in industrial HVAC units and large actuators. The S coding ensures that you cannot accidentally plug an AC power cable into a DC power port or a sensor port. This prevents equipment damage and serious safety hazards. For HVAC equipment manufacturers this M12 connector provides a compact power interface for rooftop units chillers and air handlers. The M12 size is notable for 12 amp and 6…