The Siemens 5SY6114-8 is a 1-pole SENTRON miniature circuit breaker from the 5SY6 design series, rated at 0.3 A with a D tripping characteristic. It carries a 6 kA breaking capacity per EN 60898 and 30 kA per IEC 60947-2, with a DC rating of 15 kA per IEC 60947-2 and 5 kA per UL 1077 / CSA C22.2 No. 235. The D-curve means the magnetic trip activates at 10–20× In, making it suitable for loads with high inrush currents — motor starters, small transformers, or solenoid banks — where a B or C curve would nuisance-trip on startup.
Mounting and integration
Occupies a single 18 mm width unit on DIN rail, 90 mm tall, 76 mm deep with a 70 mm installation depth. The quick-assembly mounting system accepts any position. Terminals accept solid or stranded conductors from 0.75 to 35 mm², with combined top and bottom terminals and touch protection. IP20 with connected conductors. Halogen-free and silicon-free construction suits sealed enclosures or clean-room adjacent panels.