JLG Parts 100 Amp Sealed Relay for numerious JLG Scissor and Tow Pro Series MEWP(Mobile Elevated Work Platform) Machines. This Relay is often refered to as a Contactor and is mounted near the Drive Control Module on Scissor Machines. Model Use: T350J, T500J, and numerious models of JLG Scissor MEWP Machines. Please ensure proper model and serial break before parts purchase.