The ST201M-C20 is a single-pole miniature circuit breaker (MCB) from the ST200M series, providing supplementary protection for electrical circuits. It is rated for a current of 20.0 A and features a C-type tripping characteristic, meaning it trips instantaneously at 5 to 10 times its rated current. This high-performance device is certified for both AC and DC use, with a rated interrupting capacity of 10 kA at up to 277V AC or 60V DC, according to UL 1077 standards. Its high calibration temperature of 40°C reduces derating, making it a reliable choice for various industrial and commercial applications requiring robust overcurrent protection.