Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 412-K54-FN1-25A found under Circuit Breaker by E T A Electrotechnical. The National Stock Number assigned to this part is 5925121769713, 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 412-K54-FN1-25A.