What This Reactor Does in the Panel
The Siemens SIDAC 4EU2432-0MB08-0AA0 is a 3-phase AC filter reactor rated for 220V at 50Hz. Its 45.2A rated current and 50.2A maximum define the continuous and short-term overload it can carry on a motor drive or power correction bank. The 5.67% relative throttling factor means it drops about 5.67% of line voltage at rated current — a standard impedance for drive input reactors that limits harmonic distortion and reduces peak currents on the DC bus. With a reactive power rating of 15 kvar and a resonant frequency of 210 Hz, this reactor is tuned for a 50 Hz fundamental, placing its first parallel resonance well above the 5th harmonic (250 Hz). That keeps the reactor effective at attenuating the 5th and 7th harmonics common to 6-pulse drives without amplifying lower-order harmonics.
The reactor measures 0.225 m wide by 0.21 m tall by 0.136 m deep — a compact footprint for a 45 A three-phase choke. Main circuit connections use flat connectors or screw-type terminals, so plan for ring-tongue or fork terminals on the incoming and outgoing power cables. Thermal class H (180 °C) insulation means the reactor can run hot internally without degrading the winding insulation — important when mounted in a crowded panel where ambient air circulation is limited. The 40 °C rated ambient temperature is the reference point; derate current if the enclosure internal temperature exceeds that.