What it is and what it does
The Siemens SIDAC 4EP3883-2DS00 is a 3-phase output reactor (choke) rated for 400V AC, 13.5A maximum continuous current, with 1.7mH inductance and a 7 kHz switching frequency. It's the component that sits between a variable-frequency drive's output and the motor leads, smoothing the PWM waveform and limiting the rate of voltage rise (dV/dt) that can damage motor windings on long cable runs. The 7 kHz switching frequency matches modern IGBT drives — it's not an old 2 kHz design. Rated for a 40°C ambient with thermal class B insulation (130°C rise), it dissipates 26.9W in the coil and 14W in the iron core — about 41W total at full load. That's heat that needs to escape the enclosure; in a sealed panel, factor it into your thermal budget.
Where it fits — panel and wiring
IP00 open-frame construction means it's intended for enclosure mounting, not exposed installation. Dimensions are 0.17m wide × 0.15m high × 0.12m deep — roughly 6.7 × 5.9 × 4.7 inches. That's a compact footprint for a 13.5A three-phase reactor; it'll fit on a subplate or DIN-rail adapter bracket without eating up the whole cabinet. Termination is via screw-type terminals on the main circuit — no spring-cage or ring-lug requirement. Strip and torque per the nameplate; the screw connection is field-serviceable without special tools.
Lifecycle and sourcing reality
UL and CSA recognition is confirmed per EN 61558-2-20, the safety standard for chokes and reactors. That means it carries the approvals needed for North American panel builds — no separate UL listing chase required.