It carries a continuous current of 20 A at 40 °C ambient — the same rating holds through 55 °C, then derates to 19 A at 60–70 °C, so it holds the thermal profile across a typical enclosure temperature range without nuisance tripping. Breaking capacity is the headline: 187 kA at 240 V AC, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500/690 V. Insulation voltage rated 800 V, operating range -25 °C to 70 °C, storage from -40 °C to 80 °C.
Panel Integration and Fit
The 3-pole frame mounts into standard SENTRON panel-mounting cutouts and bus-bar systems — no special adapter plate needed for a 3VA-series retrofit. The auxiliary and alarm switch wiring lands on the integrated terminal block; the shunt trip coil is wired separately.