Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ETN1045 found under Circuit Breaker by Airco Cryogenics Div Of Airco Inc. The National Stock Number assigned to this part is 5925001999518, 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 ETN1045.