The Siemens 5SY4201-8 is a 2-pole SENTRON miniature circuit breaker (MCB) designed to protect electrical circuits against overload and short-circuit conditions in commercial and industrial installations. It has a rated current of 1 A with a Type D tripping characteristic, making it suitable for circuits with high inrush currents and inductive loads. The circuit breaker is rated for operation up to 400 V AC and 60 V DC per pole and provides a 10 kA breaking capacity in accordance with IEC standards. It is designed for DIN rail mounting with a 70 mm installation depth and offers a mechanical service life of approximately 10,000 switching cycles.
