The ABB ST201M-B10NA is a reliable miniature circuit breaker designed for single-pole applications with a 10-amp rating. Part of the ST200M series, this breaker features a B-curve trip characteristic, making it well-suited for protecting circuits with moderate inrush currents. It’s rated for 480Y/277V AC and can handle short-circuit currents up to 10 kAIC, providing solid protection against electrical faults. This model also includes a neutral connection, simplifying installation in certain setups. You can find this high-quality circuit breaker through BSP Automation, a trusted source for industrial components. In the field, it’s sometimes casually called the ST201 or by its catalog number, but whatever you call it, it’s a solid choice for keeping your electrical systems safe and sound.