Double-protection load switch fuse combination electrical apparatus and circuit structure

The invention relates to the technical field of protection of distribution transformers, and specifically relates to a double-protection load switch fuse combination electrical apparatus and a circuitstructure. Based on a conventional load switch fuse combination electrical apparatus, a comprehensive relay protection device and a current transformer are additionally provided, and the circuit current is monitored through the setting of the current transformer: when a load normally operates, the comprehensive relay protection device does not operate; when an abnormal condition occurs, the comprehensive relay protection device realizes definite-time overcurrent protection of a wire-outlet cabinet; and when a short-circuit fault occurs, the circuit current is suddenly increased by multiple times, a fuse is rapidly fused, the short-circuit fault is removed, and the quick-break effect is achieved. According to the double-protection load switch fuse combination electrical apparatus and the circuit structure, the inv