What this 3VA2 MCCB brings to a 100 A feeder
Breaking capacity hits 242 kA at 240 V AC and 187 kA at 415 V AC, so this breaker clears high-fault conditions on a 100 A feeder without cascading upstream — useful when the main distribution panel has a transformer feeding a high-capacity bus. The ETU550 is a communicating trip unit, so you can pull event logs and set parameters over the integrated communication bus — no need to open the cover for adjustments once commissioned.
The 3VA2110-6JP46-0AA0 measures 140 mm wide by 181 mm tall by 86 mm deep — that 86 mm depth is the dimension that matters when you're mounting it in a shallow enclosure against a backplate with busbars behind it.