Snubber for a 3kVA 240V to 110V transformer

Hello,

Please forgive me if my question sounds vague. My EE knowledge doesn't extend far beyond Ohms law :/

I have a 3kVA transformer that is stepping down 240 VAC incoming voltage to provide 110 VAC for running computers and scientific equipment. I believe I need some kind of snubber on the 110 VAC side so that if the incoming 240 VAC is interrupted, the inductive kick does not fry my equipment.

The transformer is a single phase 30A output aluminium cored 240V->110V 50 Hz transformer that weighs about 25 kg and measures about 9 inches cubed.

I figure I need to wire a MOV or a TVS or maybe an RC snubber across the 110 VAC output of the transformer. Am I correct? Based on the rough specs above, what components would you recommend I use?

Thanks very much for your time. Please help me solve this before I fry any more PSUs!

- Leo