It is not the right curve for motor circuits or high-inrush capacitive loads; those call for C or D curves. The higher figure under 60947-2 matters when the part is specified for industrial panel duty where fault current at the bus can exceed 10 kA — the 15 kA rating gives headroom without needing an upstream current-limiting device. Rated for both AC and DC operation: 400 V AC (multi-phase or single-phase) and 440 V DC, with a maximum DC operating voltage of 500 V. The DC rating follows EN 60898-2, so it is verified for DC fault interruption — not all MCBs carry a certified DC rating.
Sealable terminals are provided, allowing the installer to lock the cover after commissioning. Halogen-free and silicon-free construction, which matters for clean-room or semiconductor-adjacent installations where outgassing must be minimized.
The part carries dual certification: IEC/EN 60898-2 for residential and commercial use, and UL 1077 for North American supplementary protection applications.