ABB 3HAA 3573-AJA VME Backplane System Module

The ABB 3HAA 3573-AJA VME Backplane System Module is the rear-plane backplane for ABB’s DSQC307-based VME rack systems, providing the VME backplane geometry and interconnects required to house DSQC307 modules in ABB S2-S3 configurations. Identified as 3HAA3573-AJA, this part is commonly described in vendor listings as the DSQC307 Backplane for S2-S3 and is explicitly linked to the DSQC307 backplane ecosystem, underscoring its role as the interconnect backbone within the ABB DSQC modular hardware. Used in control architectures that still rely on DSQC307 components, the backplane functions as the mounting and interconnection platform that ties together DSQC307 modules within a VME-based rack, enabling proper signal and data pathways across the system. In procurement and service contexts, variants such as 3HAA3573-AJA/1 appear in listings, reflecting minor revisions or configurations for ABB’s DSQC307 backplane family and its S2/S3 rack applications.