Expansion of the line-up. There is a movement to introduce BEMS, FEMS and CEMS by considerationof the global environment and the point of view of energy conservation-oriented. Its new product 600Amodel, the optimization of the shape using a high-performance ferrite core of the new development hasbeen carried out. As a result it is possible to correspond to the new demand. By the Nominal CurrentTransformation Ratio of the series unification, the further standardization of circuit parts is enabled.