Application Scope and Purpose
● Short-circuit protection
● Overload protection
● Current leakage protection
● Isolation protection

The NDB1LE-63 series of residual current action circuit breakers provide the ground leakage, direct or indirect electric shock by human body and other faults protection, which are applicable to the low -voltage terminal distribution in the industry, civil buildings, energy, communication, infrastructure and other fields.

Main Technical Parameters
● Electrical parameters
● Frequency: 50/60Hz

● Rated working voltage: AC230V/240V (1PN(One protection pole , N pole continued conducting), 2P, C400V/415V(3P, 3PN(Three protection pole , N pole continued conducting), 4P)

● Rated impulse withstand voltage: 4kV
● Rated insulation voltage: 500V
● Residual operating current type: A, AC
● Instantaneous tripping characteristics: Type B, C, D
● Rated working current: 1A, 2A, 3A, 4A, 5A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A
● Rated short breaking capability(Icn): 6kA
● Rated operating breaking capability(Ics): 6kA
● Rated residual operating current: 30mA, 50mA, 100mA, 300mA
● Mechanical life: 20,000 times
● Electrical life: 10,000 times

● Isolating function
● Leakage visualization

● Protection class
Protection class of the circuit breaker body: IP20
To be installed in the distribution box: IP40

Normal Working Environment

Altitude: ≤2000m, In case of use at the higher altitude, refer to the requirements of the miniature circuit breaker for derating. Refer to GB/T20645 “Specific Environmental Condition – T2020.12.18echnical Requirements of Low-voltage Apparatuses for Plateau”.

● Pollution level: 3
● Using ambient temperature: -25℃~+60℃
● Wet heat resistance: The humidity should be not more than 95% at 55℃
● Storage ambient temperature: -40℃~+80℃

● The product can withstand the effects of salt mist and oil mist
● The product can be disposed in places that are free from explosive media, media corrosive to metal, insulation damaging gas, and conductive dust

● The product should be installed free from snow and rain

Packaging and Storage
Maximum packaging quantity: （1A～32A（1PN） product: 5 pieces/box, 1A～32A（2P） product: 4 pieces/box, 1A～32A（3P/3PN/4P）product: 2 pieces/box；40A～63A（1PN） product: 4 pieces/box, 40A～63A（2P） product: 3 pieces/box, 40A～63A（3P/3PN）product: 2 pieces/box, 40A～63A (4P) product: 1 piece/box).. The packaged products should be stored in a warehouse with the air ventilation and the relative humidity no more than 80% and the temperature between -40℃ and +80℃. No acidic, alkaline or other corrosive gas exists in the ambient air in the warehouse. Under the above conditions, the storage period shall be no more than three years since the manufacturing date.