The ABB 3AXD50000039021 is a low-voltage AC wall-mounted drive rated 5.5 kW normal-use output at 12.6 A on a 400 V three-phase supply. It is built for water and wastewater applications — the Q in the series denotes the dedicated pump and fan firmware.
Duty ratings that matter
Normal-use (Pn) output is 5.5 kW at 12.6 A. Light-overload use (PlD) holds at 5.5 kW with a slightly lower current limit of 12.0 A — fine for variable-torque centrifugal pumps where the overload profile is mild.
Input and environment
Input voltage range is 380 to 480 V AC, three-phase, 47.5 to 63 Hz. Ambient temperature is capped at 40 °C — no derate curve needed at that ceiling, but above it you are outside the rating. Altitude rating goes to 4000 m, so it handles high-altitude installations without forced derating. Enclosure is IP21 with NEMA Type 1, meaning drip-proof indoors; not for washdown areas.
Two analog inputs and two analog outputs are available for feedback or setpoint signals. Digital I/O counts six inputs and three outputs. Communication is CAN-based — no onboard Ethernet, so if the network requires PROFINET or EtherNet/IP, an optional fieldbus adapter module will be needed. The drive includes a control unit.
Sourcing reality
Active and orderable through standard ABB distribution. No direct cross-reference or second-source equivalent is known — if you are replacing a different brand or an older ABB series, confirm the mounting hole pattern and fieldbus interface before committing the BOM.