The Siemens 4EP3700-8DS00 is a commutating choke (line reactor) for converter duty, designed to limit current rise and reduce harmonic distortion on the input side of a variable-frequency drive or DC drive. It is a 3-phase, 400 V AC rated component with a maximum continuous current of 22.4 A and a rated current of 20.16 A at 50 Hz. The 1.2 mH inductance (1.24 mH per the description) with a 4% relative inductive voltage drop at rated current means this choke provides meaningful impedance to smooth the DC link and protect the converter's input rectifier from current spikes. The 49 W coil loss plus 12 W iron core loss (61 W total) must be considered in the enclosure thermal budget — at IP00, this unit is intended for mounting inside a ventilated cabinet, not in a washdown or dust-tight environment. Screw-type terminals are used for the main circuit. The IP00 rating requires installation inside an enclosure.
Dimensions and Panel Fit
Width is 0.178 m, height is 0.153 m, and depth is 0.105 m.
DC Rating Note
The DC rated value is 27.4 A. The primary operating voltage is 400 V AC.