The S202-D1 is a 2-pole miniature circuit breaker rated at 1 A with a Trip Curve D characteristic, meaning it tolerates brief inrush currents up to 10–20 times the rated current before tripping — designed for loads like small motors, transformers, or solenoid valves that draw a heavy start-up spike. DIN rail mounting means it snaps directly into the standard 35 mm rail inside your distribution panel.
The 2-pole configuration covers single-phase or two-leg protection in a 277 VAC line-to-neutral or 480Y/277 VAC wye system. Trip Curve D makes it a good fit for motor branch circuits, small power supplies, or any load with a high inrush-to-running current ratio. The DIN rail footprint means it occupies the same slot as any standard 2-pole MCB — no special adapter or mounting plate needed.