The Siemens SIDAC 4EP3801-1BK00 is a 3-phase output reactor rated for 300 A maximum current, with a minimum operating frequency of 60 Hz and a rated switching frequency of 10 000 Hz. It carries 6 µH inductance and is built to thermal class B per IEC 60085, with a 40 °C ambient temperature rating. The IP00 enclosure means it's an open-frame component intended for installation inside a cabinet — no washdown or dust protection, so it needs panel-level ingress protection around it.
What the ratings mean for your drive line
The 300 A maximum current sets the ceiling for the motor load this reactor can sit between the drive output and the motor terminals. The 60 Hz minimum operating frequency means it's designed for standard 50/60 Hz mains-fed drives, not for low-frequency applications like some specialty motors. The 10 kHz rated switching frequency matches modern IGBT-based variable-frequency drives — the reactor's core and winding are sized to handle the PWM ripple at that switching rate without saturating or overheating. The 6 µH inductance value is relatively low, typical for a reactor that adds just enough impedance to limit motor cable charging currents and reduce reflected wave voltage spikes on longer cable runs, rather than providing heavy harmonic filtering.
Integration and mounting
0.17 m wide, 0.15 m high, 0.12 m deep. Flat-type terminals. IP00. Thermal class B, 40 °C ambient.