What this MCCB carries
The Siemens SENTRON 3VA2063-8KQ46-0AA0 is a 4-pole molded case circuit breaker rated for 63 A continuous current at 40 °C through 70 °C — no derating needed across that band, which simplifies panel schedules in warm enclosures. Insulation voltage is rated 800 V, and the interrupting capacity hits 440 kA at 240 V, 330 kA at 415/440 V, 220 kA at 500 V, and 52.5 kA at 690 V. That spread covers most industrial distribution voltages without a second breaker tier. It is designed for line protection — the primary role is feeder or main breaker in a panel, not motor-circuit protection (no integrated overload). Ground-fault monitoring uses summation current formation on L+N, and the unit includes a communication function for integration into a higher-level monitoring system.
Panel fit and integration
Dimensions are 181 mm high, 140 mm wide, 86 mm deep — a standard SENTRON 3VA2 footprint. The 86 mm depth means it clears most 200 mm deep enclosures with room for rear wiring gutters. Four poles in that width is typical for a 63 A frame; verify busbar or lug kit compatibility if replacing an older 3VA1 or 3WL breaker.