The 5SY8416-7: The 30 kA rating at 400 V AC (IEC 60947-2) is the headline fault-interruption capability for industrial distribution panels. That figure governs selectivity with upstream devices — a 30 kA SCCR at the panelboard lets you coordinate with a 50 kA or 65 kA main breaker without cascading. The 15 kA DC rating at 60 V covers battery-backed or rectifier-fed circuits. The 5 kA UL 1077 rating is the supplementary-protector limit for North American installations where the MCB is not the sole branch-circuit overcurrent device.
Integration — DIN-rail fit, terminal details, and environmental limits
Combined top and bottom terminals simplify daisy-chaining busbars. Operating temperature spans -40 to 75 °C, with humidity derating above 55 °C (95% RH at 55 °C, 55% at 70 °C, 35% at 75 °C). Vibration resistance per IEC 60068-2-6: ±1 mm at 5–25 Hz, 50 m/s² at 25–150 Hz.