not sure I've seen anything that'll do this...
which leads to the simple question of why?
if it's because of inrush overload, I'd look for a softstart dongle - iirc wmd make (or made one)
if it's 'power conservation' most single modules don't use that much power... and it won't make a great difference to the cost of running a modular if at all...
"some of the best base-level info to remember can be found in Jim's sigfile" @Lugia
Utility modules are the dull polish that makes the shiny modules actually shine!!!
sound sources < sound modifiers < modulation sources < utilities