MCCB for motor and starter protection
It's a 3-pole unit rated 63 A continuously at 40 °C, with a thermal derating curve that holds 63 A up to 50 °C, then drops to 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. That's a shallow derating slope, so you don't lose much headroom in a warm panel. Breaking capacity is the headline: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 7.5 kA at both 500 V and 690 V. At 415 V you're well above typical 50 kA utility fault levels, so this breaker gives selectivity headroom without cascading upstream. At 690 V the 7.5 kA limit is the constraint — verify your available fault current if the line runs at that voltage. Max power loss is 17.3 W, which matters for panel thermal calculations in a sealed enclosure.
The supplied basic switch is 3VA11635MH360AA0.