JS-frame (30-250A AC, 300-750A DC)

A very robust Hydraulic-Magnetic MCCB (Molded Case Circuit Breaker). In DC configuration it’s ideal to use as main breaker in large battery systems thanks to its rated current of up to 750A DC. The JS-series are, just as the rest of the CBI MCBs, based on the Hydraulic-Magnetic principle. This means that they will keep rated current regardless of the ambient temperature and they are designed and certified to carry 100% of the rated current without de-rating.