Air Circuit Breaker - Three-dimensional Arrangement, 1000-4000a Current Ratings | Instantaneous Overcurrent Release, Manual Disconnection, Upper Arc-extinguishing System

Air Circuit Breaker (Acb) are of three-dimensional arrangement type.All the contact system,instantaneous overcurrent release,and left and right side boards are mounted on one insulating plate.The arc-extinguishing system is mounted on the upper part.

The operating mechanism can be mounted on the front face or the right side and has the "Breaking" and "Closing" indications and the manual disconnected with the tripping half axis,is mounted on the back.The quick saturation current transformer of the current-voltage converter is put onto the lower busbar.The undervoltage time delay device,thermal relay or semiconductor release can be mounted on the lower part.

DW15-1000,1600,2500 and 4000 breakers are of three-dimensional arrangement type,The frame is composed of the bottom support,side board and beam.The contact system of each phase is mounted on the bottom support and the arc-extinguishing chamber is mounted above it.