KYN28A-12 (Z) indoor metal armored withdrawable switchgear is a high-voltage distribution device for l2kV, three-phase AC, 50Hz single busbar and single busbar segmented system, used for receiving and distributing electrical energy_.In addition to being compatible with VS1 and VD4 vacuum circuit breakers, it can also be equipped with Siemens' 3AH series, Toshiba's VK series, Mitsubishi's VPR series vacuum circuit breakers, etc_.The secondary control and protection system adopts ABB REF542, Siemens SHPROTEC, Schneider Sepcom series, and domestic intelligent monitoring units to form the distribution automation system_.

This product also derives KYN28A.1-12A.1-12 (Z) (cabinet depth 1350mm) front maintenance type metal armored withdrawable switchgear and compact and reliable switchgear (width 650mm) equipped with VSm type permanent phosphorus vacuum circuit breaker or VS1+type vacuum circuit breaker with modular spring operating mechanism SS1_.