ABB 3HAC5393-2 Battery Unit

ABB 3HAC5393-2 Battery Unit, listed as the Battery Unit DSQC 508, is a replaceable backup power module designed to accompany the DSQC 508 control hardware in ABB automation systems. The unit ensures continuity of essential data during brief power interruptions by supplying standby power to the DSQC 508 logic, helping to prevent data loss in routine maintenance or unexpected outages. Catalog description is Battery Unit DSQC 508, with ABB type designation 23x21x21 and a Sweden origin. The internal battery can be changed when the unit revision is 10 or higher, using replacement battery part number 3HAC5105-1; some catalogs also reference the part as 3HAC53932. The component is recognized across multiple distributors as a spare part for ABB DSQC 508 installations, and it is frequently listed alongside other DSQC 508 accessories for ABB’s S4(S4C/S4C+) controller families. Alternative references and cross-listings appear in catalogs and retailer listings, reflecting the product’s long-standing role in ABB’s legacy automation hardware. This battery unit is a compact module that integrates into the DSQC 508 ecosystem to support reliable operation during power events and to extend service life of the associated controller hardware.