Electric leakage detection sensor

The utility model provides an electric leakage detection sensor, relates to the technical field of sensors, and aims to solve the problems that when an existing electric leakage detection sensor is used, an inlet wire and an outlet wire are commonly penetrated into holes at the same time for detection processing, but the inlet wire and the outlet wire are lack of a constraint structure when penetrating through the holes; the problem that normal detection is affected when the position in the through hole is unbalanced due to the fact that the through hole is prone to making contact with the inner wall of the through hole in the detection process is solved. A detection assembly is arranged in the fixed shell; an adjusting part is arranged outside the detection part; and a wire bunching part is arranged in the adjusting part. By fixing the restraining insertion blocks on the outer walls of the bunching arc plates, the restraining insertion blocks make contact with the inner walls of the adjusting grooves through