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AIR CIRCUIT BREAKER

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Ideal for power distribution in large facilities, ACBs are commonly used in main switchboards, control centers, and generator protection circuits. They offer high breaking capacities, customizable protection settings, and remote monitoring capabilities—making them perfect for modern electrical infrastructure.

  • Cleaning of breaker with CRC-226.
  • Removal of old grease and re-greasing the same with recommended grease.
  • Check condition of arcing contact and gap between fixed and moving arcing contact shall be checked.
  • Checking the reset mechanism, tripping of breaker through push button.
  • Checking tripping of ACB through protection release.
  • Tripping of ACB manually through volt metric release.
  • Checking and adjust freeness of DN and volt metric release trip rod.
  • Checking presence and proper tightening of hardware.
  • Checking presence of all circlips.
  • Checking conditions and alignment of jaw contact with cradle terminals.
  • Checking conditions of ACB wiring and replaced if required.
  • Checking and adjusting gap between hilum sheet and side plate.
  • Checking proper closing of all poles together.
  • Checking working of anti pumping device in case of EDO ACB.
  • Checking alignment of SIC and it’s operation.
  • Checking scrapping earth alignment.
  • Checking conditions of arc chutes.
  • Checking U/V release pick up and drop off.
  • Checking ACB Tripping through shunt release.
  • Checking motor operation in case of EDO ACB.
  • Checking closing coil operation in case of EDO ACB.
  • Checking continuity and proper changeover of aux contact block.
  • Checking of release by secondary injection for O/L,S/C,E/F.
  • Setting of release as per the load.
  • Checking the healthiness of CTs.
  • The spare parts, accessories would have to be provided by the customer.