The Siemens 3VA1010-4ED46-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 100 A continuous at 40 °C, with a 4-pole configuration and a TM210 thermal-magnetic release. Its interrupting capacity hits 121 kA at 240 V AC, 75.6 kA at 415 V, and 52.5 kA at 440 V — enough for high-fault industrial mains where upstream coordination demands a stiff breaker. No adjustment dial, so you spec it and lock it in — good for a BOM that shouldn't drift.
At 40 °C it carries the full 100 A. Up to 50 °C it holds 100 A; at 55 °C it derates to 98 A, at 60 °C to 96 A, at 65 °C to 94 A, and at 70 °C to 91 A. Maximum power loss is 25 W, which is modest for a 100 A frame. That keeps internal cabinet temperature rise manageable in a crowded enclosure.
If you are looking for a functional second-source with similar ratings, the 3VA1110-5ED36-0AA0 is a close sibling — same 4-pole frame, same 100 A TM release, but check the interrupting ratings and accessory compatibility for your specific coordination study.
The 4-pole width (101.6 mm) is standard for a 100 A frame — it will drop into a panel designed for a similarly sized MCCB without rewiring, but verify the busbar spacing and lug kit.