Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number VGFD20BK found under Interrupterground Fault by Cooper Wiring Devices Inc. The National Stock Number assigned to this part is 5925016759579, and the Federal Supply Class is 5925 Circuit Breakers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like VGFD20BK.