What it is and what it does
The Siemens 4EU3622-6CA00-0AA0 is a 3-phase commutating choke (line reactor) designed for converter applications. It limits the rate of rise of current (di/dt) and filters harmonics on the AC line side of a variable-frequency drive or DC drive converter, protecting the rectifier diodes and reducing line notching. Rated for 500 V AC at 50 Hz, it carries a continuous AC current of 450 A (I LN) and a maximum AC current of 500 A (Ithmax). The DC-rated current is 612.7 A, reflecting the choke's ability to handle the DC-link ripple current in a 6-pulse converter. Inductance is 55.6 µH (0.0556 mH) per phase, with a relative inductive voltage drop of 4% at rated current, voltage, and frequency. That 4% drop is typical for line reactors sized to limit fault current without excessive voltage sag under load.
Thermal and mechanical fit
Thermal class H insulation (180 °C continuous) with a 40 °C ambient rating. Total power loss is 453 W — 293 W in the coil and 160 W in the iron core. That heat must be managed; the IP00 enclosure means no dust or splash protection, so mount it inside a ventilated cabinet with clearance for airflow. Footprint is 0.35 m wide by 0.321 m tall by 0.227 m deep. Connections are flat-type terminals (bus-bar style), not screw-clamp or spring-cage — expect to bolt copper bars or lugs directly.