What this MCCB carries — and where it fits
The 3VA2163-5HN32-0CH0: Breaking capacity varies sharply with system voltage: 187 kA at 240 V, 121 kA at 415 V and 440 V, 79 kA at 500 V, and 4.25 kA at 690 V. At 690 V the rating drops to a level that still covers most secondary-side transformer faults, but for primary 690 V distribution you would typically step up to a higher-frame breaker. The 187 kA at 240 V makes this unit suitable for high-fault panels near large transformers or capacitor banks. Thermal derating is mild through 50 °C — the breaker holds full 63 A up to that point. At 55 °C it derates to 60.6 A, at 60 °C to 58.3 A, at 65 °C to 55.9 A, and at 70 °C to 53.6 A. If your panel ambient runs above 50 °C, factor the derated figure into the load schedule rather than oversizing the frame.
Dimensions and panel fit
The breaker measures 86 mm deep, 105 mm wide, and 181 mm high. It mounts on a DIN rail or directly to a mounting plate via the base. The 105 mm width is standard for a 3-pole 63 A MCCB in the SENTRON 3VA2 family — no surprise for panel layout. Leave at least the manufacturer's recommended side clearance for arc-chamber venting and thermal dissipation.
Integrated auxiliaries and release
This variant ships with an undervoltage release (UVR) built in — part number 3VA9608-0BB24 for the auxiliary trip module — plus two auxiliary switches and one trip alarm switch (HQ type). That gives you remote status indication (open/closed/tripped) without an add-on block. Power loss at full load is 6.5 W maximum, which is modest for a 63 A electronic-trip breaker.