●Short -circuit protection

●Over-load protection


NDB1-63 dedicated to the low voltage power distribution system of industrial, buildings, energy

communications and infrastructure.


  • Number of Poles: 1P, 1P+N, 2P, 3P, 3P+N, 4P
  • Rated working Voltage: 1P:AC230/400V,AC240/415V,DC60/80V;

1P+N:AC230/240V; 2P:AC400/415V,DC60/80V;


  • Rated Current: 1A,2A,3A,4A,5A,6A, 10A, 16A,20A,25A,32A,40A,50A,63A
  • Rated Insulation Voltage: 500V
  • Rated Frequency: 50/60Hz
  • Rated Impulse Withstand Voltage: 4kV
  • Rated Frequency Withstand Voltage: AC2500V 50Hz 1min
  • Breaking Capacity(Icn): 6000A (AC);10000A(DC60/80V)
  • Rated short circuit breaking Capacity(Ics): 6000A (AC);7500A(DC60/80V)
  • Instantaneous Tripping Characteristic: B、C、D
  • Mechanical Life: 20000 times
  • Electrical Life: 10000 times

Product certification and implementation standard:

  • Product certificate:CCC,CE,TUV;
  • Product certification standard:GB/T 10963.1,IEC60898-1, GB/T 10963.2,IEC60898-2;

Normal Working conditions:

  • Ambient temperature:-40℃~+70℃
  • Stored ambient temperature:-40℃~+80℃
  • Heat and humidity resistance:The relative air humidity ≤95% at the temperature of +55℃
  • Altitude:≤2000m, if you want to apply it more than 2000m, you must refer to Miniature Circuit Breaker’s reduced capacity table. Also you can refer to GB/T20645 the technological requirement of the low-voltage electrical equipment when it is used on high altitude.
  • Pollution degree: 3
  • Free from obvious vibration or shock

Packaging and storage:

  • Maximum packing quantity

1P: 12 pieces in a box, 12 boxes in an overwrap carton.

1P+N,2P: 6 pieces in a box, 12 boxes in an overwrap carton.

3P: 4 pieces in a box, 12 boxes in an overwrap carton.

3P+N,4P: 3 pieces in a box, 12 boxes in an overwrap carton.

  • Products should be stored in the warehouse where there is ventilation. The relative humidity there should not exceed 80%, and the ambient temperature there is between -40℃ to +80℃. In addition, there should not be acidic, alkaline and corrosive gas in the air.
  • Products should not be deposited more than 3 years in the above mentioned conditions since the producing date.
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