The ABB 3AXD50001002749 is a wall-mounted LV AC drive built for HVAC applications. It ships as a control unit plus the drive itself, frame size R1, rated for 5.5 kW normal use (12.6 A) on a 380–415 V three-phase supply, with a heavy-duty rating of 4 kW (9.4 A) and light-overload at 5.5 kW (12 A). The enclosure is IP66 / NEMA 4X, so it handles washdown environments and outdoor installation without an extra cabinet.
Heavy-duty (9.4 A) applies when the drive sees constant torque or higher starting duty — use that figure for conveyors or compressors. The light-overload rating (12 A) mirrors the normal-use current but under UL listing, where output power is 7.5 Hp. Power factor is 0.98, and standby loss is only 14 W, which matters for energy code compliance on systems that idle overnight.
Communications and I/O
Built-in BACnet means this drive talks directly to building management systems without a gateway. It has 2 analog inputs, 2 analog outputs, 6 digital inputs, and 3 digital outputs — enough for a standard AHU or chiller control scheme. No industrial Ethernet port is on board, so if you need Modbus TCP or PROFINET, plan for an optional fieldbus adapter. The control board uses a CR2032 lithium coin cell (220 mAh) to keep the real-time clock and parameter backup alive during power loss.