The interrupting capacity is 242 kA at 240 V AC, which drops to 187 kA at 415 V and 440 V, and 121 kA at 500 V — meaning it can safely clear high-fault currents in low-voltage switchgear without upstream coordination. At 690 V the rating falls to 3.7 kA, so this is not a 690 V main breaker unless fault current is tightly limited.
Rated current and thermal performance
The breaker holds its full 63 A rating across the entire 40 °C to 70 °C ambient range with no derating — the spec table lists 63 A at every 5 °C step from 40 °C through 70 °C. That simplifies panel design in warm enclosures or adjacent to heat-producing gear.
The breaker ships with 3 auxiliary switches (HQ design) integrated; no auxiliary release or voltage trip module is included.