The Siemens SENTRON 3VA9673-0JG32 is a TA3.2 circular conductor terminal voltage tap — an internal tap-off block designed for three cables, shipped as three units. It accepts copper or aluminum stranded conductors from 4/0 AWG up to 400 kcmil, with a torque spec of 25.4 Nm on the 120–185 mm² range. The stripped length is 1.0 inch.
This accessory includes a control wire voltage tap-off, so you can pick off a lower-voltage signal directly at the main conductor without a separate splice block. That saves a DIN-rail position and one wiring step in the panel. The internal design means it mounts inside the SENTRON 3VA55/3VA65/3VA66 breaker footprint — verify the specific frame before committing the BOM line.