The invention discloses an energy-saving type power-consumption-free single-phase
alternating current motor starting protector with structure improvement, and belongs to the technical field of
refrigeration compressors. The energy-saving type power-consumption-free single-phase
alternating current motor starting protector comprises a shell body, a shell cover, an overload protector, a power-consumption-free
starter and an externally connected terminal mechanism, wherein an overload protector containing cavity, a power-consumption-free
starter containing cavity, an externally connected terminal mechanism
insertion cavity and a starting controller containing cavity are defined by the shell body; the shell cover is matched with the shell body; the overload protector is arranged in the overload protector containing cavity; the power-consumption-free
starter comprises a power-consumption-free starter body and a starting controller; the externally connected terminal mechanism is matched with the externally connected terminal mechanism
insertion cavity in an inserting mode. The energy-saving type power-consumption-free single-phase
alternating current motor starting protector is characterized in that externally connected terminal mechanism
insertion cavity comprises a
first insertion sheet cavity, a second insertion sheet cavity, a third insertion sheet cavity and a fourth insertion sheet cavity. The externally connected terminal mechanism comprises a
first insertion sheet, a second insertion sheet, a third insertion sheet, a fourth insertion sheet and a fifth insertion sheet. The
first insertion sheet is matched with the first insertion sheet cavity in an inserting mode, the second insertion sheet is matched with the second insertion sheet cavity in an inserting mode, the third insertion sheet is matched with the third insertion sheet cavity in an inserting mode, the fifth insertion sheet is matched with the fourth insertion sheet cavity in an inserting mode, the fourth insertion sheet is in
electrical connection with the overload protector, and the first insertion sheet and the third insertion sheet serve as transfer terminals to be connected with an externally connected power source and a
capacitor.