What it is and where it drops into the panel
The 1SVR730020R3100 is the ABB CT-MVS.12S timer from the CT-MVS series — a multifunction time relay that sits on the DIN rail inside a control panel, driving sequence logic for motor starters, valve banks, and star-delta contactors where a settable on/off, flasher, or star-delta transition is the actual job.
Sourcing posture for the BOM freeze
No official successor drops in for this code, and the family doesn't surface a pin-compatible alternative on the record, so the cleanest move is to nail the order code on the PO line and order against the confirmed 4–6 week horizon.