The Siemens 3VA1096-4ED32-0KC0 is a SENTRON molded case circuit breaker (MCCB) built for line protection in distribution panels. It carries a 16 A rated current at 40 °C and holds that rating through 55 °C, only dropping to 15 A at 60 °C and above — so in a warm enclosure you still get full ampacity up to 55 °C. The interrupting ratings are what set this MCCB apart: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 500 V and 690 V. That's high-fault capability for a 16 A frame — it handles upstream transformer faults without needing a current-limiting fuse ahead of it. Three poles, rated insulation voltage of 800 V, and a maximum power loss of 10.6 W. The auxiliary switch design is two HQ auxiliary switches, and the auxiliary release is a shunt trip (STL). No undervoltage release, no ground-fault monitoring, no communication function — this is a straight line-protection breaker with a shunt trip for remote opening.
The 3VA1096-4ED32-0KC0 measures 130 mm high, 76.2 mm wide, and 70 mm deep. That 70 mm depth is shallow enough to fit a standard 100 mm deep enclosure without crowding the gland plate. The 76.2 mm width (3 inches) matches the typical 3-pole MCCB footprint on a DIN rail or panel-mount base — no surprises when laying out the backplane.