The Siemens 5SY6602-8 is a 4-pole (3P+N) miniature circuit breaker in the SENTRON 5SY6 series, rated 2 A at 400 V AC with a D tripping characteristic. Breaking capacity is 6 kA per EN 60898, 30 kA per IEC 60947-2, and 5 kA per UL 1077 / CSA C22.2 No.235. Rated for 72 V DC maximum, with a DC breaking capacity of 15 kA per IEC 60947-2 — useful for DC bus or battery circuits in the same panel, though the 2 A rating limits the load side.
Any mounting position allowed. The combined top and bottom terminals accept solid or stranded conductors from 0.75 to 35 mm² — that's a wide range, so you can land a 2.5 mm² load wire or a 25 mm² feeder without adapters. IP20 with connected conductors — finger-safe but not sealed; install inside a rated enclosure. Sealable, halogen-free, silicon-free. Touch protection is built in.