Converts 240VDC nominal battery input into a regulated 415VAC (± 2%) 3-phase 50 Hz pure sine wave output for continuous industrial duty. Integrates an in-built galvanic isolation transformer at the inverter output to decouple downstream loads and suppress electrical disturbances. Maintains critical process uptime with no-break changeover time and robust unbalanced load management across a 56 A per-phase load rating. Engineered with heavy overload margins rated at 125% for 60 seconds and 150% for 5 seconds under dynamic factory loading. Achieves up to 90% peak inverter efficiency while delivering clean power quality with linear load THD under 3%. Supports configurable Grid Saving, Battery Backup, and Export modes with keypad-settable battery buffers and BMS compatibility. Housed in an industrial forced-air cooled MS C.R.C.A. enclosure equipped with an interactive backlit LCD and tactile keypad interface.