SENTRON 3VA2 MCCB — 100 A, line protection with shunt trip
It carries a continuous current rating of 100 A at 40 °C, and that rating holds flat through 70 °C — no derating needed across the full operating temperature range per the datasheet.
Interrupting capacity and selectivity
Breaking capacity is specified per voltage level: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V. For a 100 A frame, the 187 kA at 240 V provides substantial headroom for high-fault locations near a transformer secondary.
Dimensions are 105 mm wide, 181 mm high, 86 mm deep — a standard 3-pole MCCB footprint for DIN-rail or direct-panel mounting. Power loss is 13.5 W maximum; account for this in thermal calculations when grouping multiple breakers in a sealed panel.