What it is and what it does
The Siemens 3VA9104-0JG11 is a SENTRON TA1.3 circular conductor terminal with an integrated control wire voltage tap-off, sold as a pack of four units. It is an accessory designed specifically for 3VA2 100/160/250 molded case circuit breakers. The voltage tap-off lets you derive a control signal directly from the load-side conductor without an additional terminal block — useful for panel builders who need a fused or monitored tap for a pilot light, PLC input, or auxiliary relay without adding a separate tap block to the DIN rail.