ABB 3HAC020849-001 Contactor Board Unit

ABB 3HAC020849-001 Contactor Board Unit (DSQC611, 3HAC020849-001/07) is a dedicated contactor interface board used with ABB DSQC 611‑based drive and robot controller configurations. The base part number identifies the DSQC611 Contactor Board Unit, with the /07 suffix indicating a specific revision. Some distributor listings note that the unit ships with a metal cover and that ABB has discontinued the part, with 3HAC13389-2 identified as the replacement. In legacy ABB installations and in the aftermarket, this board interfaces between the robot controller and external contactors, supporting interlocks and switching functions used by drive modules. Common applications include ABB IRC5‑based systems and other DSQC‑based configurations that require a dedicated contactor interface board to manage external contactors.