Noark Electric offers a complete range of 2- and 3-pole molded case circuit breakers in four frame sizes: M1 - 100 A, M2 - 225 A, M3 - 400 A, and M4 - 600 A. Each frame size offers a range of interrupting voltage ratings from 240-690 Vac and 250-600 Vdc. The M series conforms to global standards that include UL 489, CSA C22.2 No. 5-02 and IEC 60947-2. The product series feature high-breaking capacity and a new patented arc extinguishing design with installation flexibility: bus bar connection, lug line/load side connection, plug-in, rear connection, and draw-out.