Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2500-3 found under Protector Thermal Overload Electrical Motor by Airserco Mfg Co Inc. The National Stock Number assigned to this part is 6110000747127, and the Federal Supply Class is 6110 Electrical Control Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 2500-3.