... KYN28 switch boad 1 Draw-out type 2 ISO9001,200r8 3 Factory provide KYN28 switch boad1. 1,Brief of the product and its application.KYN28 ... enclosure is of IP4X.2.2 The primary switch may be provided with VD4 vacuum circuit breaker ... and C3 series of fixed type load switch from ABB, various domestic vacuum circuit breakers (such ... in lieu of the same foreign products. KYN28 switch boad