Multiple Dependent Drop Down Configurator

In Excel my last two array's are not working. My Product Family, Genset Model, and Voltage work and are dependent on each other. I can not get correct array formula's for my last two drop box's. I would like my Type of CB to also be dependent with Product Family, Genset Model, and Voltage so I can produce a final output which is the Circuit Breaker Model Number.

I do not have much knowledge with excel and I have been working on this for over a week! If someone could help me it would be much appreciated!

Thanks