The Siemens 3VA9133-0JK10 is a SENTRON TC1.0 circular conductor terminal — a wire connector designed specifically for 3VA4/5 molded-case circuit breaker accessories. It accepts solid copper from 14 AWG up to 10 AWG, and stranded or finely stranded copper from 14 AWG up to 8 AWG, with a stripped length of 0.48 in. The terminal includes a control wire voltage tap-off, letting you derive a control signal directly from the load-side conductor without a separate splice or terminal block.
Panel integration note
This terminal mounts directly onto the load-side lugs of 3VA4/5 breakers. It occupies no additional DIN-rail space — it is a lug-mounted accessory, not a rail-mounted block. The control wire tap-off is a screw-terminal takeoff point; verify the tap wire gauge fits the terminal's minimum 14 AWG stranded rating. The 0.48 in stripped length is the target for all conductors; exceeding it risks exposed copper beyond the clamping zone.