ABB 3HAC043904-001 is the DSQC 633C serial measurement unit used in compatible ABB robots. ABB identifies it as a complete unit with a serial measurement board and bracket.
ABB 3HAC043904-001 is also identified in ABB robot manuals as the RMU102 three-pole SMB variant. The three-pole arrangement uses the specified RMU battery family, and ABB documents a typical 36-month life for a new battery.
ABB 3HAC043904-001 must match the robot model, SMB location, bracket, battery connector and cable interface. After replacement, the ABB procedure requires connection checks and verification or updating of revolution counters before operation.