The Siemens 3VA2140-0MS32-0AA0 is a SENTRON molded case circuit breaker built for motor protection, with a 40 A continuous rating that holds flat from 40 °C up through 70 °C — no derating curve to chase in a warm enclosure. Breaking capacity is the headline here: 440 kA at 415 V AC, and still 187 kA at 690 V AC. Rated insulation voltage is 800 V, operating voltage 690 V AC, so it covers 480 V and 600 V class panels with margin.
Footprint and panel fit
Three-pole, 105 mm wide, 181 mm tall, 86 mm deep — that's a standard MCCB footprint for the 40 A frame class. No undervoltage release, no shunt trip, no ground-fault module on this variant — it's a straight motor-protection breaker with the ETU310M doing the logic.