The Siemens 3VA1063-2ED42-0DH0 is a SENTRON molded case circuit breaker (MCCB) rated for line protection, 4-pole, with a continuous current of 63 A at 40 °C and a rated insulation voltage of 800 V. That 63 A holds flat through 50 °C and only starts to taper at 55 °C — 62 A — dropping to 58 A at 70 °C, so you get full rating in most ventilated enclosures without derating. Breaking capacity runs 52.5 kA at 240 V, 32 kA at 415 V, and 7.5 kA at 690 V, which covers the high-fault end of most industrial distribution boards.
Dimensions are 130 mm high, 101.6 mm wide, 70 mm deep — a 4-pole MCCB that fits standard panel-mount cutouts for the SENTRON 3VA frame. The 70 mm depth leaves room behind the door for wiring and auxiliary wiring without crowding.
That means you get remote status (open/closed/tripped) and undervoltage protection without adding separate accessories. No ground-fault monitoring version on this variant. Maximum power loss is 19.8 W — plan for that in the enclosure thermal budget.