What this 4-pole C-curve MCB brings to a panel
Rated 10 kA breaking capacity per DIN EN60898-1 and 35 kA per IEC 60947-2 at 400 V AC, it handles high prospective fault currents common in industrial mains distribution without needing an upstream current-limiting device.
Breaking capacity — what the two ratings mean
The 10 kA rating under EN 60898-1 is the standard for residential and light commercial MCBs. The 35 kA rating under IEC 60947-2 is the industrial counterpart, certifying the breaker can clear faults up to 35 kA at 400 V AC in an industrial environment — critical when the available fault current at the panel exceeds 10 kA. For DC circuits, the breaker is rated 15 kA at 60 V DC per IEC 60947-2, with a maximum DC operating voltage of 72 V. That covers 48 V and 60 V DC bus protection in railway signaling or telecom auxiliaries.