19 Inch Interchangeable Type Universal Socket Network Cabinet and Rack PDU(1)PDU series are modularized and multi-functional power distribution units exclusively for cabinet. The series products are designed & developed according to international standard, and obtained several invent patent, and are made up of many standards of power socket modules, controlled function module, protecting function module, surge protector module, channel surge protector module, digital AC amperemeter module, creepage protector module, etc. The products are applied to 482.6mm (19") standard cabinet & nonstandard cabinet, and electronic & electric equipment of high-tech fields. Modularized and multi-functional power distribution unit is with pru meth ean & novel structure, international advanced technology, safe & reliable quality, easy installation and wide usage.