The Siemens SENTRON 3VA1110-1AA32-0AB0 is a 3-pole switch disconnector in the 3VA1 IEC frame 160, rated for 100 A continuous across the full ambient range from 40 °C to 70 °C — no derating needed up to that top temperature. It is designed as a pure disconnecting means without overload or short-circuit protection, so it serves as a load-break switch for isolating circuits under load rather than as a circuit breaker. The front-mounted busbar connection and included nut keeper kit simplify panel assembly, and the two built-in auxiliary switches (HP type) provide status feedback for PLC or indication circuits.
Rated 100 A at 70 °C means this switch disconnector handles full rated current even in a hot enclosure — no need to oversize for ambient temperature inside a packed panel. The max rated operational voltage with DC is 500 V, so it can break DC loads up to that voltage, which is useful for battery or UPS isolation. Mechanical service life is 15 000 switching cycles typical, so it's built for frequent manual or motor-driven operation.
Integration notes
The two HP auxiliary switches are wired via the front terminals; no undervoltage release or shunt trip is fitted, so if you need remote trip, order the optional motor drive separately.