The ABB S203P-B16 is a 3-pole molded case circuit breaker with a B-curve trip characteristic. It uses a delayed thermal tripping mechanism for overload protection and an electromechanical tripping mechanism for short circuit protection.
What the B-Curve Means for Your Panel
The B-curve trips between 3 and 5 times the rated current, making it a good fit for resistive or general-purpose loads where you want fast clearing on a short circuit without nuisance trips from small inrush currents. It's a common choice for lighting circuits, socket outlets, and control transformers.