NOARK Electric offers a complete range of 3 pole Molded Case Motor Circuit Protectors (MCPs, magnetic or short circuit protection only) which are used to protect the cables feeding three phase motors in six frame sizes: M1M – 150A, M2M – 250A, M3M – 400A, M4M – 600A, M5M – 800A, and M6M – 1200A. Each frame size offers a range of interrupting ratings at 240-690 Vac and 250-600 Vdc.