It carries a 100 A rated current at 40 °C and a 25 kA Icu ultimate short-circuit breaking capacity at 415 V AC, 50/60 Hz — that's the maximum fault current it can safely interrupt without damage, per IEC 60947-2.
Rated operational voltage is 230 V AC, single-phase L2-N. The 8 kV impulse withstand voltage (Uimp) covers surge coordination in standard distribution panels. Mechanical durability is 20,000 cycles; electrical durability is 20,000 cycles at rated current and 10,000 cycles at 2x rated current at 277 V — this is a panel-mounted breaker, not a switching device for frequent operations.
The MGP1002L2N is certified to BS EN 60947-2, the standard for low-voltage switchgear and controlgear — specifically for circuit breakers. It is suitable for isolation per that standard, meaning it provides a visible break and meets the touch-safe gap requirements. No earth-leakage protection built in; that's handled separately if needed.