Mains Choke for Drive Applications
The Siemens 4EU3022-0EQ00-1BA0 is a three-phase mains choke (line reactor) designed for installation ahead of frequency converters. It carries a rated voltage of 690 V AC and a maximum current of 500 A at 60 Hz, with an inductance of 0.027 mH and a relative voltage drop of 1.28% at rated conditions. That 1.28% drop is typical for a line reactor sized to limit harmonic distortion and reduce peak currents on the drive input — not so high it sags the bus, but enough to smooth the line. Rated operational current 450 A, maximum current 500 A. Coil loss 209 W, iron loss 96.5 W.
The 4EU3022-0EQ00-1BA0 is built to EN 61558-2-20, the standard for chokes and reactors. Thermal class H (IEC 60085) means the insulation system can handle 180 °C hot-spot temperature — a solid margin for drives running near full load in a warm cabinet.
Dimensions are 0.3 m wide, 0.269 m tall, and 0.221 m deep — a substantial block. IP00 means no enclosure; it is an open-frame component intended for mounting inside a cabinet. The flat-type terminals (bus-bar style) accept bolted connections for the main circuit — plan for copper bars or large cable lugs, not spring-cage terminals.