It's a 3-pole unit built for line protection, with a maximum interrupting capacity of 242 kA at 240 V and 187 kA at 415 V, so it handles high-fault scenarios on the distribution side without cascading upstream.
Sizing and interrupting performance
The 63 A frame carries a wide adjustable thermal-magnetic trip range from 95 A minimum to 756 A maximum, so it covers motor feeder or distribution branch circuits within that window. On the fault side, interrupting ratings drop as voltage climbs — 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V. That 690 V figure is the ceiling; for 690 V systems this breaker is only good for low-fault locations. Compared to the smaller-frame 3VA1020-2ED32-0DD0, this 3VA2163 carries a higher continuous rating and a much higher interrupting capacity — the 3VA1020 tops out at 25 kA at 415 V, while this unit holds 187 kA at the same voltage. If you need selective coordination on a high-fault bus, the 3VA2163 is the right frame; the 3VA1020 would limit downstream fault-clearing capability.
Dimensions are 86 mm deep, 105 mm wide, 181 mm tall — the 105 mm width is the 3-pole frame width, so leave that space plus side clearance for arc venting. The two HQ auxiliary switches are factory-installed; no additional wiring for status feedback.