Allen-Bradley 1489-M2C300 Miniature Circuit Breaker – 2-Pole, 30A, C-Curve, 480Y/277V AC

The 1489-M2C300 provides both thermal (overload) and magnetic (short circuit) protection. The "C" Trip Curve is the standard industrial choice, designed to handle moderate inductive inrush currents—such as those from small motors or fluorescent lighting—without nuisance tripping.