M12 L-Coded Power Connectors HARTING M12 L-Coded Power Connectors feature an M12 footprint with four- or five-pin L-coding. The M12 series achieves 0.75kW of power and is ideal for high-power applications. HARTING M12 L-Coded Power Connectors are suitable for use in small servo motors, field distribution boxes, fieldbus-controlled I/O boxes, Ethernet and control devices, power supply devices, and much more.