The ABB 3AXD50000121199 is the control-unit version of the ACS880-31 low-harmonic drive, rated 4 kW normal-use output at 10 A on a 400 V three-phase supply. It carries heavy-duty ratings of 3.0 kW and 8.0 A, and light-overload ratings of 4.0 kW and 9.5 A, so the application duty class determines which current limit governs the motor cable sizing.
This is the low-harmonic variant of the ACS880 family, meaning it includes an integrated active supply unit that meets IEEE 519 harmonic limits without external filters. The trade-off is a slightly higher standby loss of 39 W compared to a standard diode-supply drive of the same power class, but the harmonic compliance simplifies panel design for sites with strict power-quality requirements.
Wall-mounted in an R3 frame with IP21 protection and NEMA Type 1 enclosure, this drive is sized for clean indoor environments. The input voltage range is 380 to 415 V at 47.5 to 63 Hz. It includes two analog inputs and two analog outputs, plus six digital inputs and two digital outputs. Communication is via CAN; there is no onboard industrial Ethernet interface, so if you need PROFINET or EtherNet/IP, plan for an optional fieldbus adapter module.