What the B-curve and breaking capacity mean for your panel
That same 10 kA holds for DC circuits per EN 60898-2, and the part is also rated 15 kA at DC per IEC 60947-2 — a useful headroom if your DC bus is stiff. Rated operating voltage is 400 V AC (multi-phase or single-phase) and 880 V DC, with a maximum DC voltage of 1 000 V. That DC rating is unusual for a 4-module-width MCB — it covers battery banks, UPS systems, and solar combiner boxes where the string voltage runs high.
It mounts in any position and uses the quick-assembly system — clips onto the rail without tools. Vibration resistance per IEC 60068-2-6 covers ±1 mm at 5–25 Hz and 50 m/s² at 25–150 Hz, which is enough for most industrial panels unless you're mounting directly on a high-vibration pump skid.
The 5SY5463-6 is certified to IEC/EN 60898-2 and UL1077, which means it's accepted in both IEC and North American panels (UL 1077 is the supplementary protector standard). It's halogen-free and silicon-free, so it won't outgas corrosive compounds in a sealed enclosure.