Siemens SENTRON 3VA1450-4GE42-0AA0 — 500 A 4-Pole MCCB with TM220 Release
Breaking capacity is voltage-dependent: 121 kA at 240 V, 75.6 kA at 415 V and 440 V, 52.5 kA at 500 V, and 11.9 kA at 690 V. The 690 V rating is lower, but still adequate for most 600 V class industrial systems.
Above that, it derates linearly: 488 A at 55 °C, 476 A at 60 °C, 464 A at 65 °C, and 452 A at 70 °C. Maximum power loss is 122.7 W, which contributes to the enclosure's thermal load. Physical footprint: 184 mm wide, 248 mm tall, 110 mm deep. That's a standard 4-pole MCCB form factor for a 500 A frame — fits most 600 V switchboard buckets and panelboard interiors without modification. The depth is shallow enough for shallow-profile enclosures.