It's a line-protection breaker, not a motor-protection or ground-fault device; no undervoltage release, no phase-failure detection, no communication module on board. The 121 kA breaking capacity at 240 V AC is the headline number, but the 75.6 kA at 415 V and 52.5 kA at 440 V are the real-world figures for most industrial panels — that still puts it well above typical available fault current in a 400 V distribution board, so selectivity coordination is straightforward. No need to order a separate aux block for basic signaling.
At 55 °C it derates to 60.48 A, at 60 °C to 59.22 A, at 65 °C to 57.96 A, and at 70 °C to 56.7 A. Plan the load accordingly.
Panel fit — dimensions and mounting
Width 76.2 mm, depth 70 mm, height 130 mm.