The Siemens 3VA2163-7HM36-0AA0 is a SENTRON 3VA2 molded case circuit breaker (MCCB) in the line-protection variant, carrying a continuous rated current Iu of 63 A that holds flat from 40 °C through 70 °C — no derating curve to track for a warm panel. The ETU330 electronic trip unit handles the overcurrent release, and the breaker includes summation ground-fault monitoring on the L-conductor. The 330 kA interrupting rating at 240 V (242 kA at 415 V and 440 V, 187 kA at 500 V, 3.7 kA at 690 V) gives serious SCCR headroom for high-fault installations; the 3.7 kA at 690 V is the practical ceiling for 690 V line-side faults.
Deployment context
Mounts in a standard MCCB panel footprint — the 105 mm width and 86 mm depth leave room for side-by-side breakers and busbar connections. The motor-drive option (listed as optional extension) means you can add remote motor operation later without swapping the breaker.