The Siemens 5SY6601-8 is a SENTRON miniature circuit breaker with a 1 A rated current and a D tripping characteristic, 4-pole (3P+N) configuration rated at 400 V AC.
The 4-pole unit occupies 4 width units (72 mm).
Humidity tolerance: 95% at 55 °C, derating to 35% at 75 °C. Halogen-free and silicon-free construction. Touch protection is built in. The part is sealable for tamper-proof installations. Approvals include EN 60898, IEC 60947-2, and UL 1077 / CSA C22.2 No. 235 (5 kA at AC).
