Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SM33HK2 400 1 found under Circuit Breaker by Eaton Corporation. The National Stock Number assigned to this part is 5925002717500, 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 SM33HK2 400 1.