The Siemens 5SY7413-8 is a SENTRON miniature circuit breaker with four poles, D tripping characteristic, and a 13 A rated current at 35 °C. It breaks fault currents up to 15 kA per EN 60898 and 25 kA per IEC 60947-2, giving headroom for high-fault installations like industrial panels or sub-distribution boards. The D curve handles inrush from motor starters and transformers without nuisance tripping.
Sizing and thermal derating
Rated current drops with ambient temperature: 12.38 A at 40 °C, 12.05 A at 45 °C, 11.73 A at 50 °C, 11.38 A at 55 °C, and 11.02 A at 60 °C. If the panel runs warm, size the load to the derated figure, not the 35 °C nameplate.
Mounting and integration
Snaps onto DIN rail via the quick assembly system; mounting position any, so vertical or horizontal busbars both work. Occupies 4 modular width units (72 mm wide) with a 70 mm installation depth. Combined terminals top and bottom simplify daisy-chaining. IP20 with conductors connected — fine for enclosed panels, not for wet areas.
Lifecycle and sourcing
Listed as current production. The 5SY7413-8 is sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time.