Breaking capacity across voltages — where it fits
Breaking capacity drops as system voltage rises: 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at both 500 V and 690 V. At 240 V, 121 kA is generous; at 480 V, the 75.6 kA figure still covers most North American industrial services.
Rated current holds flat at 160 A from 40 °C through 50 °C, then derates to 158 A at 55 °C, 155 A at 60 °C, 153 A at 65 °C, and 150 A at 70 °C. In a sealed, uncooled enclosure that sees 60 °C internal ambient, you lose 5 A — not much, but worth checking if you are running at the edge of the breaker's rating. The 76.2 mm width (3 in) and 70 mm depth (2.76 in) fit standard MCCB panel cutouts; the 130 mm height (5.12 in) is typical for this frame size. Maximum power dissipation is 38 W — plan ventilation if multiple units are ganged in a small enclosure.