WD Engineering is a progressive and innovative manufactures rep firm of Electrical and Industrial products. For over 40 years, WD Engineering has specialized in application knowledge and problem solving to fit our customers unique project needs. Servicing Illinois, Wisconsin, and Iowa with dedicated State Specialists. Tosibox - Wireless Remote Access LS Electric : LG - VFD Drives, Mini Circuit Breakers, Contactors, MCCB, Manual Motor Starters, EMPR Dirak - Hinges Antaira - Power over Ethernet Switches, Industrial Wireless Products Song Chuan - Electromechanical Relays Fibox - Non-Metallic Solutions, Polycarbonate Enclosures Pfannenberg - Industrial Air Conditioners, Air to Air Heat Exchangers, and Singaling Macromatic - Time Delay Relays, Alternating Relays, Timers, Current Sensing Relays CPI/Chatsworth - Metallic Enclosures