Limiting the utility corridor Protector

The invention relates to a property public electricity management device, in particular to a corridor public electricity current limiting protector. The technical scheme is as follows: the corridor public electricity current limiting protector mainly comprises a power supply input end, an output end, a current limiting resistor, a current on-off control circuit and a signal element, wherein a current on-off control element mainly comprises a photoelectric coupler, a switch controller, a controlled silicon and a triode; the output end of the photoelectric coupler is connected with the controlled silicon, and the input end of the photoelectric coupler is connected with the triode; and the output end of the switch controller controls conduction and cutoff of the triode, and the input end of the switch controller is connected with the photoelectric coupler. The corridor public electricity current limiting protector has the advantages that: by arranging the current on-off control circuit, when the load of corridor public electricity exceeds a set value, the output end can stop power supply to cause a corridor lighting lamp to stop work, and until inappropriate loads are removed, normal power supply is restored for the circuit, so the public electricity can be greatly saved, and electricity stealing and electric leakage of the public electricity are avoided.