It carries a continuous current of 63 A with no derating across the full operating range from -25 °C to 70 °C — the rating holds flat at 63 A from 40 °C through 70 °C, which simplifies panel thermal budgeting in high-ambient enclosures or marine engine rooms where ambient can push past 55 °C.
Interrupting capacity and selectivity
The interrupting capacity reaches 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. The 3-pole design with a trip indicator supports selective coordination downstream — the 63 A frame clears line-side faults before branch breakers see the full let-through.