Siemens 5SY6305-7CC SENTRON MCB — C-Curve, 0.5 A, 3-Pole
The Siemens 5SY6305-7CC is a SENTRON miniature circuit breaker (MCB) with a C tripping characteristic, rated 0.5 A at 400 V AC, 50/60 Hz. The C-curve means it's designed for moderate inrush loads — typical for small motor circuits, transformers, or lighting banks in mechanical engineering and industrial panels. Breaking capacity is 6 kA per EN 60898, with a separate UL 1077 / CSA C22.2 No. 235 rating of 5 kA for North American acceptance. Mounting position is unrestricted, and the breaker is sealable for tamper-proof applications.
Overall dimensions: 90 mm height, 54 mm width, 76 mm depth. The 3-pole unit occupies three 18 mm width units.
DC & Compliance Notes
For DC circuits, the maximum rated voltage is 72 V. The breaker does not switch the neutral conductor. Vibration resistance per IEC 60068-2-6: ±1 mm at 5 to 25 Hz, 50 m/s² at 25 to 150 Hz. The design code is 5SY6CC; functional designation per DIN EN 61346-2 and DIN EN 81346-2 is 'F'.