The Siemens SENTRON 5SY8463-7 is a 4-pole miniature circuit breaker with C-curve tripping characteristic, rated for 25 kA interrupting capacity at 400 V AC per IEC 60947-2 and 15 kA at 60 V DC per the same standard. It also carries a UL1077 listing at 5 kA, making it a dual-standard part for panels shipping to both IEC and North American markets. The C-curve means it handles moderate inrush from motor starters and transformers without nuisance tripping — typical for mixed industrial loads in mechanical engineering and industry applications.
Panel fit and environmental limits
Occupies 4 modular width units on a DIN rail, with a quick assembly system for snap-on mounting in any position. Depth is 76 mm, width 72 mm, height 90 mm — the 70 mm installation depth leaves clearance for standard enclosure gland plates. Rated IP20 with connected conductors, so it's intended for enclosed panels, not open washdown areas. Ambient range spans -40 °C to 75 °C, with derating on humidity: max 95% RH at 55 °C, tapering to 35% at 75 °C. Vibration resistance per IEC 60068-2-6 covers ±1 mm at 5–25 Hz and 50 m/s² at 25–150 Hz, which suits rotating machinery environments.