Circuit Breaker Applicab1e scope and purpose

  • Short -circuit protection
  • Over-load protection
  • Isolation protection

    NDB6AZ-63H series circuit breakers products are mainly used in telecommunications equipment rooms or communication cabinets,as isolation,short circuit and overload protection for cabinets,equipment rooms or downstream subscriber lines.


  • Rated voltage(V):DC80
  • Rated limit breaking capacity(KA):10
  • Rated current(A):4,6,10,16,20,25,32,40,50,63
  • Electriccal endurance(times):4000
  • Mechanical life(times):6000
  • Plug depth(mm):23~25
  • Strpping length(mm):0.75~6mm2:12~18 10mm2:14~18 16mm2:18
  • Insertion frames force(N):≤80
  • Pull out frame force(N):≤75
  • Circuit breaker insertion and removal times:200
  • Clod pressed end Length(mm):0.75~6mm2:10~16 10mm2:12~16 16mm2:16

 Working conditions:

  • Can withstand the effects of humid air(Temperature @+40℃ and above, air relative humidity does not exceed 50%,allows greater relative humidity at lower temperatures,for example,95%@+20℃)
  • Can withstand salt spray for 48 hours
  • In a medium without explosion hazard, and the medium does not have enough gas and conductive dust to corrode metal and destroy insulation
  • In places where there is no rain or snow
  • Height:≤2000m,if you want to apply it more than 2000m, you must refer to Miniature

Packaging and storage:

  • Maximum number of package:8/box, packed in boxes:24 boxes/box, it should stored in a warehouse where air circulation and relative humidity is not more than 80%, temperature is not lower than -40℃ but not higher than 80℃. Store in the warehouse without acid,alkaline or other corrosive gases in the surrounding air.
  • Under the above conditions, the storage period shall not exceed 1 year from the date of manufacture.
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