The Siemens SENTRON 3VA9133-0JG11 is a wire connector with an integrated control-wire voltage tap-off, designated TA1.1. It is a circular-conductor terminal designed for use with 3VA4 and 3VA5 molded-case circuit breakers, sold as a pack of three units. The connector accepts copper stranded conductors from 8 AWG (minimum) up to 3/0 AWG (maximum). Solid and finely stranded copper fall within the same range. For aluminum stranded, the range is 12 AWG minimum to 3/0 AWG maximum; solid aluminum accepts 10 mm² minimum to 16 mm² maximum.
Torque and Termination
The control-wire tap-off (Type Of Electrical Connection / With Control Wire Tap: Yes) allows a smaller-gauge wire to be connected for voltage sensing or auxiliary power takeoff without a separate terminal block. This is a space-saving detail when wiring the breaker's shunt trip or undervoltage release.
This is a SENTRON-series accessory, not a breaker itself.