Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 31H4-100 found under Circuit Breaker by Ellis And Watts International Llc. The National Stock Number assigned to this part is 5925011165461, 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 31H4-100.