Adding fuses or a CB in a pad mount transformer secondary

Hi All.

I know I’ve seen a picture or two of your typical oil filled pad mounted transformer that had fuses or a breaker installed right off the paddles on the secondary compartment. I tried googling it and could not find any.

I’ve asked our ABB and Cooper reps if they offer and factory installed breakers or fuses and they both said “no”.

Has anyone come across anything like this? I realize on the bigger sizes it may be very difficult to do and be able to get several sets of parallel 500’s landed due to limited room but there would be some instances where it could be an advantage to “move the problem” from the line side of the switchboard main out to the transformer. READ MORE