The 9700K Miniature Snap-acting Protector uses the same action pniciple as the millions of KLIXON Protectors now in use Cadmium Oxide con-tacts the used in the 9700K.
   The circuit is nomaliyclosed.The disc is ope-ated both by the current  passing through it and heat received from the wind-ings.When the temerature of the disc reaches a predetermnined calibration point comesponding to the maximum safe limit of the winding,the disc snaps open to intemupt the circuit,This pemiits max0imum output while limiting the windings to a safe op-erating temperature.When the winding temperature returns to a normal safe limit,the protector resets automatically.