L16-30 Plug and Connector Set Rated for 30A, 480V, 3-Phase - Iron Box Part # IBX-L1630PR L16-30P Male Plug + L16-30R Female Connector Rated for 30A, 480V, 3 Phase Heavy Duty Construction, UL Listed 4-Prong plug and connector set Hassle Free Returns / No Restock Fee