Breaker selection memo — 63 A motor-protection MCCB
The Siemens SENTRON 3VA2163-7MN36-0AG0 is a 3-pole molded case circuit breaker rated for 63 A continuous current at 40 °C, with the ETU350M electronic overcurrent release tuned for motor protection duty. That 63 A holds flat from 40 °C to 50 °C, then derates to 60.48 A at 55 °C and 56.7 A at 70 °C — the thermal curve matters if this lands in a warm enclosure.
Interrupting capacity — what the ratings mean
This MCCB delivers 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 52.5 kA at 690 V. The 242 kA at 415 V covers most industrial distribution systems in Europe and Asia; the 690 V figure drops to 52.5 kA, so verify fault levels if you are on a 690 V line.
Dimensions: 86 mm depth, 105 mm width, 181 mm height.