An industrial socket , comprising: an insulation body , having an accommodating space with a receiving opening and a plurality of notch formed on the inner wall of the accommodating space; a plurality of electrical connectors , being disposed in the accommodating space and having a first electrical end ; a plurality of actuating units , being pivotally connected to the inner wall of the accommodating space and positioned around the receiving opening ; wherein each of the actuating units comprises a slant surface portion and a cover portion , and the cover portion shielding the first electrical end ; and a plurality of elastic elements , being disposed in the insulation body , wherein each of the plurality of elastic elements is located between the inner wall of the accommodating space and one corresponding actuating unit ; wherein, when an electrical plug is inserted into the receiving opening , the slant surface portion enters the corresponding notch by a pushing force applied by the electrical plug , such that the cover portion correspondingly moves with the motion of the slant surface portion , so as to stop the shielding to the first electrical end of the electrical connectors , therefore a plurality of electrical terminals of the electrical plug are respectively electrically connected to the first electrical ends of the electrical connectors ; the industrial socket is characterized in that some of the electrical connectors are provided with a sidewall aperture on the first electrical end thereof, such that each of the cover portions shields the corresponding first electrical end by being inserted into the corresponding sidewall aperture , wherein, when there are no external forces being applied to the industrial socket , each of the plurality of cover portions protrude out of the sidewall aperture of the accommodating space after being applied with corresponding release force of each of the plurality of elastic elements . an insulation body , having an accommodating space with a receiving opening and a plurality of notch formed on the inner wall of the accommodating space; a plurality of electrical connectors , being disposed in the accommodating space and having a first electrical end ; a plurality of actuating units , being pivotally connected to the inner wall of the accommodating space and positioned around the receiving opening ; wherein each of the actuating units comprises a slant surface portion and a cover portion , and the cover portion shielding the first electrical end ; and a plurality of elastic elements , being disposed in the insulation body , wherein each of the plurality of elastic elements is located between the inner wall of the accommodating space and one corresponding actuating unit ; wherein, when an electrical plug is inserted into the receiving opening , the slant surface portion enters the corresponding notch by a pushing force applied by the electrical plug , such that the cover portion correspondingly moves with the motion of the slant surface portion , so as to stop the shielding to the first electrical end of the electrical connectors , therefore a plurality of electrical terminals of the electrical plug are respectively electrically connected to the first electrical ends of the electrical connectors ; the industrial socket is characterized in that some of the electrical connectors are provided with a sidewall aperture on the first electrical end thereof, such that each of the cover portions shields the corresponding first electrical end by being inserted into the corresponding sidewall aperture , wherein, when there are no external forces being applied to the industrial socket , each of the plurality of cover portions protrude out of the sidewall aperture of the accommodating space after being applied with corresponding release force of each of the plurality of elastic elements . <EOS>