The Siemens SENTRON 3VA1340-1AA32-0AA0 is a 3-pole switch disconnector in MCCB design, rated at 400 A continuous current across the full ambient range from 40 °C to 70 °C with no derating — that means it carries the same 400 A at 70 °C as it does at 40 °C, a flat thermal curve that simplifies panel sizing in high-temp enclosures. This is a pure disconnector — no overload or short-circuit protection (no trip unit, no undervoltage release, no auxiliary contacts). Mechanical service life is 15 000 operating cycles typical.
Mounts in a standard panel cutout for 3-pole MCCB-form disconnectors.