The ABB 3AXD50000036398 is an ACS880-series low-voltage AC machinery drive module in frame size R4. It's the 078A-2 variant — the "2" meaning it runs on 200-240 V three-phase input, not the more common 400 V class. Rated 18.5 kW for normal-duty use (78 A output) and 15 kW for heavy-duty use (66 A output). The heavy-duty number is the one you'd size against a constant-torque load like a conveyor or positive-displacement pump. Light-overload use (variable-torque) goes to 18.5 kW at 74 A. UL ratings match: 25 Hp light-overload, 20 Hp heavy-duty at 66 A. IP20, open type, max ambient 40 °C.
Standby loss is 31 W, which matters if the drive sits idle for long periods (cooling fans still running). Power factor is 0.98, typical for a diode-front-end drive. Sound level 70 dB(A) — about as loud as a small panel fan. No Ethernet interface on this module, only CAN. If you need fieldbus, you'll add an option module. Digital I/O: 6 inputs, 5 outputs. Analog: 2 inputs, 2 outputs. Battery is a CR2032 lithium coin cell (220 mAh, 3 V), two of them, for encoder backup.
