The Siemens 3VA9773-0JC43 is a wire connector accessory from the TA6.2 family, designed specifically for 3-pole 3VA57 and 3VA67 circuit breakers. It handles four cables in the 1/0 to 500 kcmil range and includes a control wire voltage tap-off, so you can pull a smaller-gauge sensing or control feed directly off the breaker load side without a separate tap block. This is a current-production part — lifecycle status is active, and RoHS compliance dates from October 2021. REACH candidate list information is available on request.
This connector mounts onto the load terminals of a 3VA57 or 3VA67 molded-case circuit breaker. The 3-pole version means you get one connector per phase, and the control wire tap-off is handy when you need to feed a panel indicator, a shunt trip, or a small auxiliary load without running a separate circuit back to the distribution block. Packaged as a set of three units per order code — enough for one 3-pole breaker. The packaging dimensions (172 x 333 x 52 mm) give you an idea of the box size for bin storage or kitting.
Sourcing reality
Product class B means return is restricted — verify your order code before committing, because once it ships, getting a wrong part swapped involves contacting your Siemens partner directly. No runaround, but it pays to double-check the breaker frame (3VA57 vs 3VA67) before you buy.