The 3VA1196-4EF32-0CH0: The interrupting ratings span four voltage levels: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V (–). The 121 kA at 240 V is relevant for North American 240/120 V split-phase or 240 V delta panels.
Above that, the thermal-magnetic release begins to derate: 15.36 A at 55 °C, 15.04 A at 60 °C, 14.72 A at 65 °C, and 14.4 A at 70 °C (–). For a panel OEM wireman stuffing this into a crowded enclosure, the 70 °C ambient derating to 14.4 A is the number to use for conductor sizing and thermal coordination — not the 16 A nameplate.
The width of 76.2 mm (3 inches) is standard for a 3-pole MCCB in this frame class, so it occupies one 3-module position on a DIN rail or panel-mount footprint.
The trip alarm switch changes state only when the breaker trips on a fault, not on manual open — useful for remote fault annunciation.