What this drive is and where it lands
The Siemens 6SL3210-1KE21-3AC1 is a SINAMICS G120C drive rated for 5.5 kW output at 380-480 VAC three-phase, with a 150% overload capability for 3 seconds. It integrates a Class A EMC filter, a CANopen fieldbus interface, and Safe Torque Off (STO) as standard. The IP20 / UL Open Type enclosure suits control-panel mounting — size FSB, 196 x 100 x 203 mm (HxWxD).
Key ratings and what they mean for fit
The 5.5 kW rating at 380-480 VAC covers a 7.5 HP induction motor on a 400 V line — typical for a small conveyor, pump, or fan. The 150% overload for 3 s handles starting torque or short-duration load spikes without tripping. The integrated Class A filter meets EN 61800-3 for conducted emissions in the first environment (industrial mains), so no external filter is needed for most panel builds. The I/O complement — 6 digital inputs, 2 digital outputs, 1 analog input, 1 analog output — covers basic speed reference and run/stop control without an add-on module.
Panel integration notes
The FSB frame size mounts on a standard DIN rail or panel plate. The 100 mm width leaves room alongside other gear in a 600 mm enclosure. External 24 VDC control supply is required — the drive does not derive its control voltage from the main DC bus. The IP20 rating means no washdown protection; keep it inside a sealed cabinet in wet environments.