Its interrupting capacity scales with system voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 10.5 kA at 690 V — so at 415 V it handles bolted faults up to 52.5 kA without upstream fuses, which is the number that decides whether this breaker clears a fault before the transformer secondary trips.
Thermal derating curve — the real current rating at your cabinet temperature
Above that it derates: 48 A at 55 °C, 47 A at 60 °C, 46 A at 65 °C, and 45 A at 70 °C. If your panel ambient runs at 55 °C, the breaker's effective continuous current is 48 A — not the nameplate 50 A.
Integration and auxiliaries
Dimensions: 130 mm height, 76.2 mm width (standard 3-pole MCCB footprint), 70 mm depth.