NDM3Z-320V Series DC MCCB, Nader

Rated current of frame Inm (A)

320A

Rated Voltage (Ue) (V)

DC1500V

Rated Current (In) (A)

250A, 300A, 320A

Rated Insulation Voltage Ui (V)

1500V

Rated impulse withstand voltage Uimp (V)

12000V

Tripping Characteristics

/

Number of Poles

3P

Rated limit short-circuit breaking capacity level

/

Rated limit short-circuit breaking capacity Icu (kA)

10kA

20kA (τ=5ms)

Rated operating short-circuit breaking capacity Ics (kA)

10kA

20kA (τ=5ms)

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

10000 times

Maintainable life

20000 times

Electrical Life

1000 times

Flashover distance(mm)

≤50

Wiring

·Wiring mode: /

·Thread diameter: M8 (Torque value: 12N.m), M4 (Torque value: 2.4N.m)

·Connection capacity:

120mm² (250A), 185mm² (300A), 185mm² (320A)

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.