The Siemens 3VA9103-0JB11 is a SENTRON TA1.3 circular-conductor terminal, supplied as three units per pack. It is an accessory for the 3VA2 molded-case circuit breaker family in the 100 A, 160 A, and 250 A frame sizes.
Mounts directly onto the line or load terminals of a 3VA2 breaker. The three-unit pack covers a three-pole breaker in one shot. No control-wire tap provision — this is a straight power connector, not a terminal block with an auxiliary screw.
