ABB ST202M-K5 Industrial Solid State Relay Module

ABB ST202M-K5 is a two-pole miniature circuit breaker in ABB’s System Pro M Compact family, rated at 5 A and designed to protect circuits inside industrial automation panels. It interrupts both conductors of a 480Y/277 VAC supply with a short-circuit current rating of 10 kA, helping prevent damage from overloads and faults. The device features a K-curve trip characteristic, providing moderate inrush tolerance suitable for loads such as motors and control circuits. With DIN-rail mounting, the ST202M-K5 fits standard 35 mm track enclosures for quick integration into control cabinets and switchgear. Its compact 2-pole form factor enables simultaneous protection of both lines in single-phase or multi-wire applications, giving reliable overcurrent protection for feeders, control circuits, and peripheral equipment in commercial and light industrial installations. The combination of a 5 A rating, 480Y/277 VAC operation, and 10 kAIC breaking capacity aligns with common panel standards, delivering predictable trip behavior in everyday automation environments.