Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number NBLP12-4AB283R found under Interrupter Box by Federal Pacific Electric Co. The National Stock Number assigned to this part is 5925009332939, 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 NBLP12-4AB283R.