The utility model provides a quick connector, include the plug A and the plug B that connect through two signal lines of same horizontal plane coparallel, plug A with plug B links to each other with electric energy meter and circuit breaker respectively, plug A includes the rectangular bodily form fixed block of two parallels, and one of them fixed block A is greater than another fixed block B's horizontal direction width at the width of horizontal direction. The utility model provides a quick connector has fully considered current operating personnel's operation custom, efficiency demand, mistake proofing demand, simple easy the realization and factors such as cost requirement, and the intelligent ammeter's of being convenient for on -the -spot installation and maintenance has fine economic benefits and social.