What governs the fit
The 1SAZ331401R1006: On a 690 V-class feeder the relay's voltage ceiling is the rating that confirms it can be specified into the motor branch without an interposing transformer; the current range, trip class, and contact block are the settings the panel builder dials in at commissioning, and those are not carried in this listing.
Sourcing posture
The listing carries the ABB brand identity and a single 690 V voltage ceiling, with no lifecycle status on file from the official channel — so this is quoted to order against an RFQ, and any production-status read needs to be confirmed against the current ABB line at the time the PO is cut.