What it is and what it does
The Siemens SENTRON 3VM9384-0JG13 is a wire connector accessory — specifically the TA1.5 type — rated for 50 to 300 mm² copper or aluminum conductors, with a built-in control wire voltage tap-off. It comes as a pack of four units and is designed for the 3VM 400/630 molded-case circuit breaker family.
Conductor range and terminal markings
The connector accepts stranded copper or aluminum cable from 1 AWG up to 600 kcmil, and finely stranded copper in the same range. The UL terminal marking reads TA1.5 CMC 1-600 CU7AL UR CSA; the IEC marking reads 50-300 mm² CU/AL 400A NNL. Wire stripping length is 1.1 in.