MCCB overview

MCCB can when the current exceeds the trip rating automatically cut off current. It refers to the use of plastic insulator as the housing of the device, used for separation between conductors and ground metal parts. MCCB usually contain thermal magnetic trip units, and MCCB larger sizes can be equipped with solid state trip sensors. The trip unit is divided into: thermal magnetic trip and electronic release. Commonly used, the rated current total of the following 100125160200225250 315350400500630 1525304050607580 A.