ABB ST201M-D15 Industrial Solid State Relay Module

ABB ST201M-D15 is a 1-pole miniature circuit breaker (MCB) in ABB’s ST200M family, rated for 15 A with a D-curve trip characteristic. It protects low-voltage circuits from overloads and short circuits in control panels, machine tool feeders, and distribution boards. The device is intended for 240 V AC operation and delivers a high short-circuit breaking capacity (up to 10 kA at 240 V), making it suitable for panels where fault currents can be substantial. This ST201M-D15 carries the catalog designation 2CDS271334R0151 and is compliant with UL 1077, CSA 22.2 No. 235, and IEC/EN 60947-2, ensuring compatibility with North American and international wiring practices. The unit is designed for single-pole installations on standard DIN rails, enabling straightforward integration into control cabinets and equipment enclosures. Its D-curve characteristic offers reliable protection for circuits with moderate inrush and temporary peak currents, while the 15 A rating helps prevent nuisance tripping on normal operation. In short, it provides compact, dependable overcurrent protection for individual branch circuits within industrial or commercial electrical panels.