ABB ST201M-K25 Programmable Safety Relay Module

ABB ST201M-K25 is a 1-pole miniature circuit breaker (MCB) from ABB's ST201M line, rated at 25 A with a K-type trip curve and a 10 kA breaking capacity, providing reliable overcurrent protection for single-pole circuits. It is designed for DIN-rail mounting in electrical distribution panels, making it suitable for industrial and commercial panel installations that require compact, standard-protected single-pole circuits. The ST201M-K25 is cataloged as 2CDS271334R0517 in ABB's eCatalog, confirming its 1P configuration, 25 A rating, and K-characteristic trip behavior. As part of ABB's miniature circuit breaker family, this device is intended to protect wiring and equipment from short circuits and overloads in protected circuits, enabling quick isolation of faults and safe power distribution. Typical applications include protection of single-pole power circuits in control panels, lighting installations, and general electrical distributions where predictable, certified protection is required in tight panel spaces.