Rated 100 A continuously at 40 °C ambient — and it holds that same 100 A rating up through 50 °C, only starting to derate at 55 °C (98 A) and dropping to 91 A at 70 °C. That thermal stability means you don't lose headroom in a warm enclosure as long as you stay below 50 °C. Breaking capacity is where this breaker earns its keep: 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and still 11.9 kA at 690 V.
Integration notes — panel fit and auxiliaries
Dimensions are 130 mm height, 76.2 mm width (3 in), and 70 mm depth — a standard SENTRON 3VA1 frame footprint that fits existing 3VA panel cutouts and busbar arrangements. No separate UVR module to mount; it's integral to the breaker. The storage spec is wider — that's the limit for handling and warehousing, not running.