The Siemens SENTRON 5SY8563-7 is a 2-pole miniature circuit breaker (MCB) with a C tripping characteristic, rated 63 A at 230 V AC and 50/60 Hz. It carries a 25 kA breaking capacity per IEC 60947-2, meaning it can safely interrupt fault currents up to that level without upstream damage — critical for selectivity in industrial distribution panels. At DC per IEC 60947-2 it's rated 15 kA; under UL 1077 / CSA C22.2 No.235 it's 5 kA, so verify the standard your installation follows. Rated current derates with ambient temperature: 63 A at 45 °C, 61.05 A at 50 °C, 59.03 A at 55 °C. The C-curve trips between 5× and 10× In, suited for motor-starting and moderate inrush loads in mechanical engineering / industry environments.
Mounting & Integration
Snaps onto DIN rail via the quick assembly system; occupies 2 modular width units (36 mm wide). Depth is 76 mm, installation depth 70 mm. Mounting position is any — no derating needed for horizontal or inverted orientation. IP20 with connected conductors, overvoltage category III, pollution degree 3 — standard for enclosed distribution boards. Combined terminals top and bottom accept copper conductors; neutral conductor switching is integrated (1P+N). Touch protection is included. Halogen-free and silicon-free construction — suitable for clean-room or corrosive-environment panels where outgassing matters.