Current ratings — the real load envelope
Three current figures define the operating envelope. The 71 A maximum (Ithmax) at 50 Hz is the thermal current limit in free air — this is the hard ceiling for continuous operation. The 63.9 A rated value (I LN) is the nominal current at which the 4% voltage drop is specified and the 80 W coil loss plus 26 W iron loss apply. The 89 A peak current and 87 A DC rated value tell you the choke can handle short-duration overloads and DC-link ripple without saturating. For a 400 V class drive, this choke is typically paired with a converter rated around 45–55 kW output, but the exact match depends on the drive's own line-side current draw and switching frequency.
Thermal class and cooling
Rated for 40 °C ambient with Class B insulation (130 °C hot-spot limit per IEC 60085). The combined 106 W power loss (80 W coil + 26 W iron) must be dissipated into the panel air — this is not a negligible heat source. The IP00 rating means no enclosure protection; the choke is an open-frame component intended for installation inside a cabinet or cubicle where personnel cannot contact live parts.
Physical fit and connections
Dimensions: 0.219 m wide, 0.179 m tall, 0.143 m deep. The main circuit connects via flat-type terminals — these are bus-bar or cable-lug connections, not screw-clamp or spring-cage. Plan for lug-type terminations and adequate bending radius for the power cables. The open-frame construction means it mounts on a chassis plate or sub-panel, not a DIN rail.
Classified as a mature product. It remains in the active catalog but is not a current-promotion or high-velocity line item. No official successor order code has been published, so this is the current form-fit-function part for new builds and replacement.