Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ESB22050L SE4 found under Circuit Breaker by Brown Boveri And Cie Ag. The National Stock Number assigned to this part is 5925014015302, 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 ESB22050L SE4.