The Siemens 5SY4402-7 is a 4-pole SENTRON miniature circuit breaker with C-curve trip characteristic. It carries a dual breaking capacity: 10 kA per EN 60898-1 for standard branch circuit protection, and 35 kA per IEC 60947-2 for industrial fault levels. That makes it a single device that fits into both residential panel schedules and light industrial distribution boards without requalifying the SCCR.
Lifecycle stage is current production. No end-of-life notice or last-time-buy clock; the part is available through standard Siemens distribution channels and can be specified into new BOM lines without a sunset concern.
Installation depth is 70 mm, total depth 76 mm. Width is 72 mm (4 modular units). Mounting position any, with quick assembly system. Terminal tops and bottoms are combined for both cable and busbar connection. Neutral conductor is not switched — the 4th pole is a protected pole, not a switched neutral. IP20 with conductors connected, pollution degree 3, overvoltage category III.
Complies with IEC/EN 60898-1, IEC/EN 60947-2, and UL 1077 (5 kA); halogen-free, silicon-free; ambient -40 °C to 75 °C with derating; suitable for mechanical engineering and industry.