The breaking capacities, at 380/415V, are classified by following letters: S: 37kA for 100 and 160AF N: 50kA for 160, 250 and 1600AF 65kA for 630 and 800AF H: 75kA for 1600AF 85kA for 160, 250 and 630AF 100kA for 800AF L: 150kA for 160, 250, 630, 800 and 1600AF