ABB S201P-D2 is a 1-pole miniature circuit breaker with a 2 A rating and Trip Curve D, rated for 277 VAC and a 10 kA interrupting capacity. It snaps onto DIN rail — standard panel fit for lighting, motor, or distribution subfeeds where high inrush loads (transformers, small motors, power supplies) need the delayed magnetic trip of a D-curve to avoid nuisance trips on startup.
The 2 A continuous rating governs the load it protects — sized for a circuit drawing up to 2 A steady. The D-curve means the magnetic trip is set to 10–20× rated current (20–40 A instant trip), so it tolerates the startup surge of a small transformer or contactor coil without dropping out.
Panel integration
Single-pole width (about 17.5 mm) — fits a standard distribution board or sub-panel. No special busbar or bridging required for single-pole use; if you need multi-pole ganging, the S200 series uses the same rail and accessory comb busbar.