MDmax series are the low voltage switchgear that ABB company authorizes Mingyang Electric to manufacture, and the combined-type multi-function intelligent low voltage switchgear through the type-tested low-voltage switchgear and controlgear assembly (TTA for short) , and conforms to the GB7251.1-2005 and IEC60439-1 standard. Electrical and mechanical design adopts the modular principle to achieve the compactness, diversity and flexibility of grouping cabinet scheme by selecting standard element and standard components.