It carries a 187 kA interrupting rating at 240 V AC and 121 kA at 415/440 V, giving you serious fault-current headroom for high-capacity switchboards or transformer secondaries. The 105 mm width and 86 mm depth mean it slots into standard SENTRON mounting footprints without re-spacing the busbars.
This breaker's short-circuit capacity drops as system voltage climbs: 187 kA at 240 V, 121 kA at 415/440 V, 75.6 kA at 500 V, and 3.7 kA at 690 V.
Thermal performance and power loss
Maximum power loss is 25.5 W, which matters for heat buildup in a densely packed panel. If you're stacking several of these in a row, factor that dissipation into your ventilation or forced-air calculation.