The Siemens SENTRON 3VA2163-6HK46-0AA0 is a 4-pole molded case circuit breaker (MCCB) rated for 63 A continuous current at 40 °C through 70 °C ambient, with an ETU340 electronic trip unit. The interrupting ratings are 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V.
The ETU340 is an electronic overcurrent release with adjustable N-conductor protection (OFF or 100%). This is the same trip platform used across the 3VA2 line protection series. Compared to a thermal-magnetic MCCB, the ETU340 gives you tighter long-time and short-time pickup bands and field-adjustable settings via the front dials — useful if the load profile shifts after commissioning.