Output Reactor for Variable-Frequency Drives
The Siemens 4EP3600-0RS00 is a SIDAC three-phase output reactor (output choke) rated for 15.5 A maximum AC current at 700 Hz, with a rated inductance of 0.6 mH and a switching frequency of 6.4 kHz. It is designed to sit between a variable-frequency drive and the motor, limiting the rate of voltage rise (dV/dt) and reducing motor-bearing currents and reflected-wave spikes on long cable runs. The IP00 open-frame construction means it mounts inside a cabinet — no touch protection on the enclosure itself.
The 15.5 A maximum current at 700 Hz sets the thermal limit under worst-case switching conditions; the rated operational current is 13.9 A at the 6.4 kHz switching frequency. The 0.6 mH inductance and 20 % impedance (per the description) provide enough choke effect for most 400 V-class drives driving motors up to roughly 7.5 kW, depending on cable length and switching frequency. Total power loss sums to 79.4 W (52 W coil + 27.4 W iron core) at the rated 30 °C ambient — that heat must be considered in the enclosure's thermal budget. Thermal class B (130 °C) insulation gives a standard margin for continuous duty.
The reactor measures 0.14 m wide by 0.13 m high by 0.07 m deep — a compact footprint for a 15 A-class choke. The IP00 protection class means it must be installed inside a panel or enclosure with its own IP rating; it is not suitable for standalone outdoor or washdown locations. Panel builders should account for the 79.4 W heat dissipation and ensure adequate ventilation or forced cooling in the enclosure design.