Siemens 5SY7214-8 SENTRON MCB, 2P D 0.3A, 15kA EN

The Siemens 5SY7214-8 is a SENTRON miniature circuit breaker, 2-pole, with a D tripping characteristic. Rated 0.3 A at 35 °C, it protects against short-circuit and overload in circuits with high inrush currents — typical for motor starters, transformers, or power supplies where a B- or C-curve would nuisance-trip. The 15 kA breaking capacity per EN 60898 covers most distribution panels; the 50 kA rating per IEC 60947-2 handles higher fault-current scenarios at the service entrance. Rated for 400 V AC, 50/60 Hz. Mounts on DIN rail via the quick assembly system, occupying 2 modular width units (36 mm). Installation depth is 70 mm; the total depth with terminals is 76 mm. Any mounting position is permitted. Pollution degree 3 and overvoltage category III make it suitable for fixed industrial panels where the environment is not clean. Rated current derates with ambient temperature: 0.28 A at 40 °C, 0.27 A at 45 °C, 0.26 A at 50 °C, 0.25 A at 55 °C, and 0.24 A at 60 °C. If the panel ambient runs above 35 °C, size up one frame or account for the lower trip threshold. The D-curve trips magnetically at 10–20× In, so it holds through the start-up spike of a small motor or capacitive load. Sealable, halogen-free, silicon-free. Touch protection on the terminals. Combined terminals at top and bottom accept supply from either direction. Suitability marked for mechanical engineering and industry per the manufacturer.