Siemens 5SY4363-5
The Siemens 5SY4363-5 is a 3-pole 63 A miniature circuit breaker from the SENTRON series, with tripping characteristic A for short-circuit and overload protection of cable and equipment in industrial control panels. Rated at 63 A at 35/40 °C, with a derating curve provided for higher ambient temperatures. Breaking capacity of 10 kA per EN 60898 and 15 kA per IEC 60947-2 covers both residential-panel and industrial-distribution applications. Standardised to IEC/EN 60898-1, IEC/EN 60947-2, and UL1077—covers both North American and European approvals on a single BOM line. Installs via quick assembly system into any mounting position. Occupies 3 modular units (54 mm wide) with a depth of 76 mm and installation depth of 70 mm. IP20 with conductors connected; sealable for dust/tamper protection in harsh environments. Halogen-free and silicon-free, which matters where outgassing during a fault can't be tolerated (confinement zones, clean rooms). Lifecycle status is current production—no end-of-life watch. This part is actively manufactured and available through the Siemens authorized channel; we quote it to order against an RFQ.