What this 3VA frame carries
Three poles, rated 16 A continuous at 40 °C through 55 °C — no derating needed in that band — then steps to 15 A at 60 °C through 70 °C. That thermal curve means it holds full rating in most ventilated enclosures; only tight, hot compartments force the 15 A limit. Breaking capacity is the headline: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. The 17 kA floor at 690 V is still respectable for industrial 690 V grids. Power dissipation maxes at 13.1 W — manageable for panel thermal budgeting, but worth checking if you're packing multiple breakers in a sealed enclosure.
Auxiliaries and release
That's a common spec for emergency-stop chains or undervoltage protection schemes. Dimensions are 130 mm high, 76.2 mm wide, 70 mm deep — a 3-pole MCCB footprint that fits standard Siemens 3VA panel mounting. No communication function on this variant; it's a straight electromechanical breaker with no integrated metering or bus interface.