NDM3Z-400 Series DC MCCB, Nader

Rated current of frame Inm (A)

400A

Rated Current (In) (A)

225A, 250A, 315A, 350A, 400A

Rated Insulation Voltage Ui (V)

1000V

Rated impulse withstand voltage Uimp (V)

8000V

Tripping Characteristics

/

Rated limit short-circuit breaking capacity level

/

Number of Poles

2P

3P

4P

Rated Voltage (Ue) (V)

DC500V

DC690V

DC750V

DC1000V

Rated limit short-circuit breaking capacity Icu (kA)

35kA

8kA

40kA

40kA

Rated operating short-circuit breaking capacity Ics (kA)

35kA

8kA

40kA

40kA

Rated Frequency (Hz)

50/60Hz

Standards and Certificates

·CCC, TUV, CE

·GB/T 14048.1, GB/T 14048.2, IEC 60947-1, IEC 60947-2

Maintenance-free life

5000 times

Maintainable life

10000 times

Electrical Life

1000 times

Flashover distance(mm)

≤100

Wiring mode

J0

J0, J1, J2, J3

Thread diameter

M10 (Torque value: 20N.m), M6 (Torque value: 6N.m)

Connection capacity

95mm² (225A), 120mm² (250A), 185mm² (315A, 350A), 240mm² (400A)

Normal Working Environment

·Ambient Temperature: -35℃~+70℃

·Storage Temperature: -40℃~+75℃

·Altitude: ≤2500m

·Environmental Requirements: RoHS

·Relative Humidity: The relative humidity at an ambient temperature of +40℃ should not exceed 50%. A higher relative humidity is allowed at a lower temperature.

·The product can withstand the effects of wet air, salt mist and oil mist.

·Pollution Level: 3

·Protection class: IP20

Isolation Function

·Installation Category:

The installation category of the circuit breaker connected to the main loop is:Ⅲ(power distribution and control level);

The installation category of the circuit breaker not connected to the main loop is:Ⅱ(load level).

·Installation Environment:

The product should be installed in places that are free from explosive media, media corrosive to metal, insulation damaging gas, and conductive dust, which should be also avoided from snow and rain.