NDW3A-2500 Series AC ACB, Nader

Rated current In (+40℃)(A)

1000A,1250A,1600A,2000A

N-pole rated current

100%In

Rated voltage (Ue) (V)

AC254V, AC508V, AC635V, AC730V

Rated Frequency(Hz)

50/60Hz

Rated insulation voltage Ui (V)

1250V

Rated impulse withstand voltage Uimp (kV)

12kV

Number of poles

3P

Full break time

≤50ms

Closing time

≤85ms

Rated Short-Circuit Breaking Capacity Icu (kA)(cosφ≤ 0.15）(UL1066)

AC254V

75kA

AC508V

75kA

AC635V

75kA

AC730V

65kA

Rated short-time

withstand current Icw (kA)(cosφ≤ 0.15）(UL1066)

AC254V

75kA

AC508V

75kA

AC635V

75kA

AC730V

65kA

Electrical life(times)

AC635V

8000(2000A)

AC730V

6000(2000A)

Operation frequency

30times/h

Mechanical life(times)

Maintenance-free

10000times

Operation frequency

60times/h

Installation mode

Fixed type, Drawout type

Utilization category

Category B

Standards and Certificates

·CCC

·GB/T 2423.4-2008, GB/T 4207-2022, GB/T 14048.1-2023, GB/T 14048.2-2020, GB/T 14048.5-2017, GB/T 14092.3-2009, GB/T 19608.3-2004, GB/T 20645-2021, GB/T 20626.3-2022

Wiring method of the main circuit

Horizontal connection,vertical connection

Connection bolt between bus and terminal

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Working Environment

·Ambient Temperature:-40℃~+70℃

·When the ambient air temperature is +40℃, the relative humidity of atmosphere shall not be more than 50%.

·Altitude: ≤2000m

·Anti-corrosion Level: 2

·Pollution Level: 3

·The circuit breaker can ensure resistance to electromagnetic or mechanical shock, and has passed the GB/T 4798.3 standard test.

·Amplitude:±1.5mm (2 -9Hz)

·Constant acceleration: 5 m/s² (9~200 Hz)

·Super strong shock may result in damage to the parts, and impact the reliable action of the circuit breaker.

·The circuit breaker withstands electromagnetic interference including transient overvoltages (from EMI, system aging, or environmental factors), radio waves, and electrostatic discharge.

Isolation Condition

·Installation conditions: With the vertical qradient no more than 5°, the circuit breaker shall be installed under the environment condition without explosion danger, conductive dust or the possibility of corroding metal and damaging the insulation.

·Installation type: The circuit breaker's main circuit and undervoltage release coils,power transformer primary coil installation category is IV;the rest auxiliary circuit and control circuit installation category is III.

·Protection level: IP30, IP40