The Siemens 3VA9254-0JA11 is a SENTRON box terminal set, TS1.2 design, supplied as four units for terminating copper cable on 3VA1 250 molded-case circuit breakers. It accepts solid copper from 10 AWG minimum up to 10 AWG maximum, and stranded or finely stranded copper from 10 AWG up to 3/0 AWG.
Integration into the 3VA1 250 Panel
These terminals mount directly onto the line or load lugs of a 3VA1 250 frame breaker. The TS1.2 design means the clamping mechanism is a box terminal — the conductor inserts into a square cage and a set screw clamps down, giving a more uniform grip than a saddle clamp on larger wire. No control wire tap is included on this terminal — it's a straight power connection only.