Schneider Electric ATV320D18N4C Altivar Machine ATV320 Compact 18.5 kW 380-500V IP20 Variable Frequency Drive

The Schneider Electric ATV320D18N4C is an Altivar Machine ATV320 variable speed drive in compact format, rated 18.5 kW heavy duty for OEM machine panels. It runs from a 380-500 V three-phase supply, draws 55.3 A line current at 380 V, and carries an IP20 enclosure with a 22 kA prospective line Isc rating. Safe Torque Off (STO) and Safe Stop 1 (SS1) are built in.

Technical Specifications

Selection Notes

The ATV320D18N4C's compact wall-mount format and 3C3-coated boards (IEC 60721-3-3) let it run at up to 60 degC ambient without extra panel cooling, which is the deciding factor for tight OEM enclosures. Built-in STO and SS1 remove the need for an external safety relay on machines that only require torque-off on demand; if Safe Speed Monitor or Safe Direction is needed, a different safety function set applies. Confirm the 22 kA prospective Isc rating against the panel's available fault current before selecting this frame over a lower-Isc drive in the same range.