What it is and where it lands
The Siemens SENTRON 3VA9383-0JG13 is a TA1.5 circular-conductor terminal with an integrated control-wire voltage tap, sold as a 3-unit pack. It is an accessory designed specifically for the 3VA1 400/630 and 3VA2 400/630 molded-case breaker frames — the tap-off lets you pull a control signal directly off the line side without a separate terminal block.
