ABB ST201M-K15 Relay

ABB ST201M-K15 is a 1‑pole miniature circuit breaker from ABB’s ST200M family, designed to provide overcurrent protection for single‑phase branch circuits in low‑voltage distribution panels. It is rated for 15 A and uses a Type K (K‑characteristic) trip curve, delivering reliable protection in loads with moderate inrush while remaining closed under normal operation. The device supports a voltage range of 240 V AC (277 V AC nominal) and 60 V DC, with an interrupting rating of 10 kA (UL 1077) at these voltages. The ST201M-K15 is cataloged as 2CDS271334R0457 and configured as a 1P breaker, making it suitable for modular DIN‑rail installations that protect individual circuits such as lighting or receptacle runs in commercial and residential panels. Designed for easy integration into ABB panel systems and compatible accessories, this compact, single‑pole protective device helps ensure coordinated overcurrent protection across a wide range of ABB distribution equipment.