What the ratings mean for fit
The Siemens SENTRON 3VA1110-6MH32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated 100 A continuous at 40 °C ambient — that's the full-load current it carries without tripping on a warm panel day. The TM120M thermal-magnetic release gives a fixed thermal pickup and a magnetic short-circuit trip that coordinates with downstream branch protection. Breaking capacity hits 220 kA at 240 V AC, 154 kA at 415 V, and 121 kA at 440 V — numbers that tell you this breaker handles high-fault utility feeds or transformer secondaries without needing a current-limiting fuse upstream. At 500 V and 690 V the rating drops to 7.5 kA, so for 480 V or 600 V class systems the fault-current capability is lower; verify your available fault current before committing the BOM line.
Panel integration and mounting
The 3VA1110-6MH32-0AA0 measures 130 mm high, 76.2 mm wide, and 70 mm deep — a standard MCCB footprint that fits most 3-pole panel cutouts. Front face carries IP40 protection, so it's fine for dry indoor enclosures but not washdown areas. No undervoltage release, no shunt trip, no communication module on this variant — it's a straight thermal-magnetic breaker with no auxiliary electronics. If your panel needs remote tripping or status feedback, you'll want a different option code in the 3VA family.