Nuclear power 1E grade i-AY6 series products include i-AY6-12/T1250-50, i-AY6-12/T3150-50, i-AY6-7.2(JC·R)/D250-50, i-AY6-12( JC·R)/D200-50 removable AC metal-enclosed switchgear, equipped with the company's independently developed EVH9-12 series indoor AC vacuum circuit breakers and VCFH1 series medium voltage contactor-fuse combination electrical appliances. Among them, i-AY6-12(JC·R)/D200-50 switchgear passed the national nuclear-level product appraisal in Beijing at the end of June 2019, and the appraisal conclusion was internationally leading.

i-AY6 series products have passed type test, component aging test, seismic test, electromagnetic compatibility test and high-temperature environment test verification, and meet the safety classification level 1E, quality classification QA1 level, and earthquake resistance class I requirements.

i-AY6 series products are developed by Tianshui Great Wall Switch Factory Group Co., Ltd. for 1E-class switchgear for nuclear power plants. They are suitable for reactor types such as AP1000, CAP1400, CPR1000, ACPR1000, CNP1000, ACP1000 and HPR-1000 (Hualong One). The system can be used in environmental places such as nuclear islands, conventional islands, and BOPs in nuclear power plants. It can also be used in power distribution equipment in power plants, industrial and mining enterprises, electrical systems, or public networks to control, protect, and monitor circuit equipment. .

i-AY6 series products have obtained the Civilian Nuclear Safety Equipment Design License and Manufacturing License of the People's Republic of China issued by the National Nuclear Safety Administration.