NDM5Z-400 Series DC MCCB, Nader

Rated current of frame Inm (A)

400A

Rated Voltage (Ue) (V)

DC750V, DC1000V, DC1200V, DC1500V

Rated Current (In) (A)

250A, 320A, 400A

Rated Insulation Voltage Ui (V)

1500V

Rated impulse withstand voltage Uimp (V)

8000V

Power frequency withstand voltage (1min) (V)

4000V

Tripping Characteristics

L.M.H

Number of Poles

3P

4P

Rated limit short-circuit breaking capacity level

L

M

H

L

M

H

Rated limit short-circuit breaking capacity Icu (kA)

DC750V

50kA

85kA

100kA

/

/

/

DC1000V

/

/

/

50kA

85kA

100kA

DC1200V

/

/

/

/

/

50kA

DC1500V

/

/

/

/

/

20kA

Rated operating short-circuit breaking capacity Ics (kA)

Ics=100%Icu

Rated Frequency (Hz)

50/60Hz

Standards and Certificates

·CCC, TUV, CE

·IEC60947-2, GB/T 14048.2

Maintenance-free life

20000 times

20000 times

Maintainable life

40000 times

40000 times

Electrical Life

DC750V

5000 times

/

DC1000V

/

5000 times

DC1200V

/

3000 times

DC1500V

/

2000 times

Flashover distance(mm)

≤100 (without terminal cover)

Wiring mode

/

Thread diameter

M10 (Torque value: 20N.m), M5 (Torque value: 2N.m)

Connection capacity

120mm²(250A), 185mm²(320A), 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

·The installation category of the circuit breaker connected to the main loop is: Category Ⅲ (power distribution and control level), The installation category of the circuit breaker not connected to the mainloop is: Category 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.