KYN28-12 high voltage switchgear is a mid mounted high voltage switchgear used for receiving and distributing grid electricity or protecting and controlling high voltage electrical equipment. It is mainly composed of various electrical components such as high-voltage circuit breakers, load switches, contactors, high-voltage fuses, isolation switches, grounding switches, transformers, etc. It uses air or composite insulation materials as insulation and arc extinguishing media, and is commonly used in indoor distribution rooms. Compared with fixed high-voltage switchgear, KYN28-12 adopts a trolley type high-voltage circuit breaker, which has a more flexible structure.