SDM83VU/CM1Series Moulded Case Circuit Breaker is one new type breaker which this company adopts international advanced design it have possessing small sinze, high circuit short arcing over distance and resist to vibrating. The product is novel in structure, light in weight, reliable and excellent in performance. It has high breaking capacity, can trip quickly and its installation uses with guide. High fire-resistant and shockproof plastics adopt its case and items. The product, with long life, is mainly used in AC 50Hz/60Hz single-pole 240V or two, three, four-pole 415V circuit for overload and short-circuit protection as well as for unfrequented on-and-off switching electric equipment and lighting circuit in normal case.