The Siemens 3VA1110-1AA36-0AG0 is a SENTRON switch disconnector in MCCB design — 3-pole, rated 100 A continuous, with no overload or short-circuit protection built in. It is a straight disconnect, not a breaker; the trip curve is absent because there is no trip unit. What matters for the panel builder is the flat thermal curve: the 100 A rating holds from 40 °C all the way to 70 °C, so no derating is needed in a warm cabinet. That is unusual for a molded-case switch and simplifies the BOM calculation.
Ratings and fit
Rated insulation voltage is 800 V, with operating voltage at 690 V AC and 500 V DC. The front carries IP40 protection — fine for a closed panel, not for washdown. Power loss is 38 W maximum, which is the heat the enclosure must shed. Mechanical service life is 15 000 operating cycles typical. The auxiliary switch configuration is one auxiliary switch plus one trip alarm switch, both HP type, with two CO contacts total. Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a 3-pole MCCB footprint. Front terminal connection with clamp terminals for the main circuit. No undervoltage release, no voltage trigger, no communication function. Motor drive is available as an optional extension.