The 187 kA at 240 V drops to 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. That steep derating above 440 V means this breaker is best matched to 240 V or 400 V-class distribution where the available fault current is high; at 690 V the 17 kA limit may force a larger-frame breaker upstream.
Rated 32 A from 40 °C through 50 °C, then derates to 31 A at 55–60 °C and 30 A at 65–70 °C. For a panel running warm — say 55 °C inside — plan on 31 A continuous, not the full 32.
The trip alarm signals a fault condition separately from the aux position, useful for remote status monitoring.
Physical fit
Verify the existing panel cutout or DIN-rail spacing — the 70 mm depth includes the handle and rear arc chamber, so leave clearance for wiring and the undervoltage release module.