The Siemens 3VA9264-0JG12 is a SENTRON wire connector accessory — a TA1.4 terminal block rated for 16–185 mm² copper or aluminum conductors, with an integrated control wire voltage tap-off. It ships as a 4-unit pack and is designed for the 3VA2 molded-case circuit breaker family in the 100 A, 160 A, and 250 A frame sizes. This is not a standalone breaker or switch; it is a field-installable accessory that lands on the line-side or load-side lugs of the 3VA2 base breaker to provide a secondary tap for control power, metering, or auxiliary loads. The wire stripping length is 0.8 in (20 mm), matching standard panel-building practice for lug-type terminations.
Wire range and terminal markings
The connector accepts a wide conductor range: stranded copper from 6 AWG up to 350 kcmil, finely stranded copper from 6 AWG to 350 kcmil, and aluminum solid or stranded from 16 mm² to 350 kcmil. The IEC marking covers 16–185 mm² Cu/Al NNL; the UL marking reads TA1.4 CMC 6-350 CU7AL UR CSA, confirming UL and CSA recognition for both copper and aluminum conductors. The dual UL/CSA and IEC terminal markings mean the part ships with compliance documentation covering both North American and international installations — relevant for a panel builder exporting equipment or maintaining a dual-certified BOM.