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Snubber design for switching an inductive mains load with a relay

I am envisaging a relay which switches an inductive load consisting of a couple of switched-mode power supplies (standard ATX computer power supplies) in addition to several wall-wart style power ...
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Do automotive relays come with TVS diodes?

The 500W inductive load question got me thinking. Cars have large radiator fans that often draw more than 15A and are pretty inductive. Do automotive relays have any sort of protection from ...