What this MCCB delivers
The Siemens SENTRON 3VA1163-5EE32-0HA0 is a 3-pole molded case circuit breaker rated for 63 A continuous current at 40 °C, with an interrupting capacity of 187 kA at 240 V and 121 kA at 415 V — figures that hold the unit on the grid through a hard feeder fault without cascading upstream, provided the available fault current stays within those limits.
Thermal derating and ambient limits
The breaker holds its full 63 A rating up to 50 °C; above that it derates linearly to 56.7 A at 70 °C, so a panel builder stacking this unit next to a transformer or drive must account for the local ambient inside the enclosure — the IP40 front means the case is protected against solid objects over 1 mm but not sealed against moisture, so keep it out of washdown zones.
Physical fit and panel integration
The breaker measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard SENTRON 3VA footprint that drops into the same panel cutout as other 3VA frame sizes, so a panel originally specified around the 3VA1110-5EE32-0JA0 will accept this unit without rewiring, provided the busbar and lug kit match the 63 A rating.