MOV or RC Snubber Recommendation for 3kVA 240V to 110V Transformer Output Protection

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