The Siemens 3VA2463-6HN42-0AA0 is a SENTRON 3VA2 molded case circuit breaker rated for continuous 630 A at 40 °C, with a 4-pole frame and an ETU350 electronic trip unit. The interrupting ratings scale with system voltage: 242 kA at 240 V, 187 kA at 415/440 V, 121 kA at 500 V, and 9 kA at 690 V, so it handles high-fault utility feeds without cascading upstream. The ETU350 is an electronic overcurrent release with adjustable settings — not a fixed thermal-magnetic. That means you can dial in the long-time pickup, short-time delay, and instantaneous thresholds to coordinate with downstream breakers, which matters for selectivity in a distribution panel feeding motor control centers or lighting subpanels. Neutral protection is configurable: OFF, 50%, or 100% of the phase rating, set via the trip unit. The breaker ships without ground-fault monitoring, so if you need GF protection, you add an external module or specify the GF variant.
The breaker measures 184 mm wide, 248 mm tall, and 110 mm deep — a 4-pole frame that occupies roughly 7.24 × 9.76 inches of panel face. Maximum power dissipation is 162 W at full rated current.
Because the ETU350 allows adjustable short-time delay (typically 0.1–0.5 s), this breaker can be coordinated as a main or feeder device feeding downstream MCCBs or fused switches.