The Siemens SENTRON 3VA1063-2ED32-0DH0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current at 40 °C, with a TM210 thermal-magnetic release tuned for line protection — meaning it handles overload and short-circuit in one package, no external relay needed. Breaking capacity hits 52.5 kA at 240 V and 32 kA at 415 V, which covers most industrial distribution panels and motor control centers fed from a transformer of moderate impedance. The 800 V rated insulation voltage (Ui) gives headroom for 690 V line-to-line systems, though the interrupting rating drops to 7.5 kA at that voltage — worth checking if your fault current at 690 V exceeds that figure. The auxiliary contact block includes two auxiliary switches plus a separate trip alarm switch (HQ), letting the PLC or SCADA see the breaker state and distinguish a trip from a manual open.
Thermal derating — the real ampacity
Above that, derating kicks in: 60.48 A at 55 °C, 59.22 A at 60 °C, 57.96 A at 65 °C, and 56.7 A at 70 °C.
Panel fit and mechanicals
That 76.2 mm width (3 inches, essentially) is the standard 3-pole MCCB footprint for this SENTRON generation — it fits the same mounting base and busbar system as other 3VA 3-pole units. The trip indicator is visible through the front cover, and the latching endurance is rated at 15,000 operations — fine for a distribution breaker that cycles rarely, not a daily-switched disconnect.