... 1.IEC60439,GB7251.1 2.ABB,Schneider,GE parts Package Switchgear, Alternating Current Switchgear, Protective Switching DeviceStandardsGB7251.1 ... is withdrawn.8.Easy access to equipment compartments simplifies maintenance of the breaker cubicle and control circuit elements as ... devices, facility power can be tracked and controlled. Package Alternating Current Switchgear, Protective Switching Device