A power saver for the low-voltage variation with a surge absorber is arranged to protect an electric device in overload by steadily implementing an interruptable bypass circuit. A power saver for the low-voltage variation with a surge absorber is made of one R-C series elements of insertion it and an inductive circuit of voltage winding is parallel; one TNR (Toshiba nonlinear resistor (TNR)) element; or absorb and consume a switching overvoltage ZNR (zinc oxide nonlinear resistance) element enter a circuit; its with high energy one on-off or be used for voltage winding (310; 320) it is generated in multiple contacts (311,321) contact with for electric current winding (610). Contact automatically control for voltage winding is used for a voltage of a single winding transformer of power save, uses the steel core of an E1 steel cores or an annular. Contact for electric current winding forms a bypass circuit.
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