What this 63 A MCCB delivers — and where it sits in the panel
It's a line-protection device — meaning it's built to protect cables and distribution buswork, not motor circuits. The interrupting ratings are the headline here: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and still 17 kA at 690 V. That kind of SCCR headroom at 415 V tells you it's sized for high-fault industrial distribution panels where upstream transformer capacity is substantial.
Current derating curve — real-world panel temperature matters
Above that, it steps down: 60.48 A at 55 °C, 59.22 A at 60 °C, 57.96 A at 65 °C, 56.7 A at 70 °C. If this breaker lands in a sealed, high-density panel near other heat sources, that derating is the number that governs your actual load capacity — not the nameplate 63 A.
What's on the frame — and what isn't
If your spec calls for an auxiliary contact for status feedback or a UVR for safe-start interlocking, you'd need a different variant in the 3VA family.