A50L-0001-0299#N
FANUC A50L-0001-0299/N transistor module. The FUJI 1MBI400NN-120 are single gate 400 amp 1200 volt transistors that work in tandem with the NP version i.e. negative and positive fitted to oppose each other. Part of the N series transistors. Fitted in very large FANUC ALPHA modules with alternate p/n: A50L-0001-0295#SN