The Siemens 4EM5005-6CB00 is a single-phase commutating choke (line reactor) designed for converter applications. It limits current rise and reduces harmonic distortion on the AC line feeding a variable-frequency drive or DC drive. Rated for 400 V AC at 50 Hz, it carries 18 A maximum AC current (16.2 A rated operational current) and 22 A DC rated current. The 2.7 mH inductance and 4% relative inductive voltage drop are sized for typical drive input circuits.
IP00 means it's an open-frame component — no enclosure protection. Mount it inside a cabinet where it's protected from dust and moisture. Dimensions are 0.115 m deep, 0.097 m wide, 0.111 m high. Connections are screw-type or tab terminals, so it integrates into a standard control panel with ring or fork lugs. The thermal class B (130 °C) insulation system per IEC 60085 means it handles the heat from 18 W coil loss and 19.7 W iron core loss without derating up to 40 °C ambient.