... (3-35KV AC metal-enclose switch cabinet), the standard of DL4047-91 (indoor AC switch cabinet ordering technique) and the standard of IEC298 (AC metal-enclosed and control equipments). ... ,2500,3150,4000,5000specified short circuit drop-out currentKA20, 25, 31.5,40,50,63Rated short circuit making currentKA50, 63 ... *1650*2200Overhead inletD:1800 KYN18A-12 AC indoor witdrawout metal-clad 12kv switchgear