Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number QP1B020 found under Circuit Breaker by I T E Imperial Corp. The National Stock Number assigned to this part is 5925008784077, 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 QP1B020.