Circuit breaker compartments
 - The circuit breaker cannot be moved unless it is "open"
 - The breaker cannot be closed when it is between the connected and the disconnected position. When inserting or withdrawing the breaker. the interlock lever should be lifted,Only when the breaker is "open", then lock plate can be lifted, allowing the breaker to be inserted or withdrawn. 

 Main bus and cable
 - The rear part is bus bar compartment. It is composed of horizontal feeder bus bar of ACB and cable connection prts. Cable connecting type or bus duct type available for external connection, and either type is allowed. Check or maintenance of bus compartments can be easily carried out with opening rear cover o door 

 Satety oritented constructions
 - interior protective cover and ACB front cover will enhance safety even when the front door is open. 

 Consideration for work
 - The structure which arranges power circuit at rear adn control circuit at front makes installation and maintenance easy. 

 Compact size
 - Compact size ensures and flexible effective use of electrical room,equipment layout