Multifunctional protection load switch fuse combined electrical apparatus and circuit structure

The invention relates to the technical field of protection of distribution transformers, and more specifically relates to a multifunctional protection load switch fuse combined electrical apparatus and a circuit structure. According to the multifunctional protection load switch fuse combined electrical apparatus, a comprehensive relay protection device, current transformers, and a zero-sequence current transformer are additionally provided based on the conventional load switch fuse combined electrical apparatus; during normal operation of a load, the comprehensive relay protection device doesnot operate; during an abnormal condition, the comprehensive relay protection device realizes definite-time overcurrent, quick-break, zero-sequence, temperature and gas protection and voltage monitoring multifunctional protection of a wire-outlet cabinet; and during a short-circuit fault, the current of a circuit is suddenly increased by multiple times, a fuse is rapidly fused, the short-circuit fault is removed, and the