D defs.my
Entry 1 sense Webster, 1913

Underload switch

· IPA
01 A switch which opens a circuit when the current falls below a certain predetermined value, used to protect certain types of motors from run…
  1. 1.
    A switch which opens a circuit when the current falls below a certain predetermined value, used to protect certain types of motors from running at excessive speed upon decrease of load.(Elec.)