Series JHUK combined terminal block has novel design reasonable structure. The special design of the part of fixed position can easily and quickly install each pole’s terminal on the type NS35/7.5or NS32standard installing rail. Closed nail guiding hole can make common screw knife operate easily and can also prevent nails from loosening to fall down. Through the middle of terminal’s center contact piece or inserting basiconic connecting-wire hole’s insertion contact piece,piece,realize the potential distribution among terminals,the two sides of the top use white mark system to realize unified mark.The terminals with several section grade are equipped with general accessories,such as end cover partition,division plate,separating plate and so on.The material of insulating shell uses engineering plastic-polyamide(nylon66) with high mechanical strength and excellent electric performance and excellent elasticity.