Commutating Choke for Converter Duty
It handles a maximum current of 280 A with a rated continuous current of 252 A, making it suitable for line-side or load-side filtering in variable-speed drive and rectifier circuits. The choke provides an inductance of 0.1 mH with a relative inductive voltage drop of 4% at rated current, which limits di/dt and reduces harmonic stress on the converter's semiconductors. That 4% drop is the key parameter for sizing — too low and the choke won't smooth the current; too high and you lose voltage headroom on the DC bus.
Thermal and Mechanical Fit
Rated for a 40 °C ambient with thermal class H (180 °C insulation system) per IEC 60085, the choke dissipates 167 W in the coil and 88 W in the iron core at full load. That 255 W total loss means it needs free air or forced ventilation in the cabinet — don't box it in tight with other heat sources. The flat-type terminals on the main circuit accept busbar or cable lugs; plan for a 0.27 m width, 0.248 m height, and 0.187 m depth footprint when laying out the gland plate and busbar runs.