SENTRON 5SY5108-7CC — DC-rated MCB for industrial panels
The Siemens 5SY5108-7CC is a 1-pole SENTRON miniature circuit breaker with a C-curve trip characteristic, rated 8 A at 35 °C. It carries a DC breaking capacity of 10 kA at 250 VDC per IEC 60947-2, making it suitable for DC control circuits and auxiliary loads in industrial panels where the operating voltage reaches 250 VDC.
At 35 °C the breaker holds 8 A continuous; derate to 7.1 A at 40 °C, 6.6 A at 45 °C, 6.06 A at 50 °C, and 5.47 A at 55 °C (–). The DC rating of 10 kA at 250 VDC is the interrupting capacity you need for 250 VDC bus-fed control circuits — verify your available fault current stays under that limit.
Occupies 1 modular width (18 mm) on DIN rail. Mounts in any position via the quick-assembly system. Pollution degree 3, overvoltage category III — rated for fixed installations in industrial environments.