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Automatic Transfer Circuit Breaker

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  • Place of Origin :Korea



  • Incorporated with the advantage of both ACB and ATS.
  • Simultaneous closing to both power sources is prevented by interlocking with single mechanism.
  • Compact size enables the space saving of switchgear (50% saving) and cost saving.
  • Number of switchgear can be reduced without the Tie ACB panel.
  • By-Pass application is available.
  • Neutral position is available.
  • Operating and overload current can be displayed by digital display and Earth leakage current can be detected with the optional MDTR- III.

*Registration for new design for practical use #0387632.
*Patent application #2007-0075761


Conventional (Interlocked between ACB & ATS)
ATCB (Single Mechanism)
  • Each ACB and ATS is constructed by the independent mechanism. If interlocking will be failed by malfunction, Simultaneous closing can be occurred by both power sources.
  • Complicated mechanism may cause the malfunction.
  • Electric type interlocking.
  • Interlocking with single mechanism prevents from simultaneous closing by both power sources.
  • Load can be completely protected due to electric and mechanical interlocking.


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  • Automatic Transfer Circuit Breaker

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Automatic Transfer Circuit Breaker

Automatic Transfer Circuit Breaker

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O-Sung Electric Machinery Co., Ltd.
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