ABB ST201M-C20 Safety Relay Module 2-Channel 24VDC

ABB ST201M-C20 is a single-pole miniature circuit breaker (MCB) rated for 20 A with a C-curve trip characteristic, designed for UL 1077 supplementary protection in low-voltage electrical installations. It belongs to ABB’s ST200M/ST201M family and provides an interrupting capacity of 10 kA, enabling reliable interruption of fault currents on typical distribution or control circuits. This 1P device protects an individual branch circuit in panels, cabinets, and equipment enclosures, helping prevent wiring damage and downtime from overloads or short circuits. With its 20 A rating and compact footprint, the ST201M-C20 is well-suited for protecting circuits such as control logic, lighting feeders, and other small loads in industrial or commercial installations.