Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number W28 XQ1A 0 50 found under Circuit Breaker by Tyco Electronics Corporation. The National Stock Number assigned to this part is 5925016637748, 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 W28 XQ1A 0 50.