Tuesday, October 19, 2010

Air Circuit Breakers

ACB

Air circuit Breakers are normally used high current operation. ACB current rating 400A, 630A, 800A,1000A, ………………7100A

Normally ACB include following properties.

  • 3 , 4 poles ACB
  • Microprocessor based.
  • Short circuit current rate. (50KA,55KA,65KA….)
  • All protection settings including  time setting shall be adjustable
  • Ambient temperature
  • Breaking Capacity
  • Spring charging motor
  • Shunt trip coil
  • Mechanical Reset button
  • Contact point indicator
  • Mechanical ON & OFF button

                                                             

                                                                  Air Circuit Breaker

 

 

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