NDM5Z-250 Series DC MCCB, Nader

Rated current of frame Inm (A)

250A

Rated Voltage (Ue) (V)

DC500V, DC750V, DC1000V, DC1200V

Rated Current (In) (A)

160A, 200A, 250A

Rated Insulation Voltage Ui (V)

1200V

Rated impulse withstand voltage Uimp (V)

8000V

Power frequency withstand voltage (1min) (V)

3500V

Tripping Characteristics

L.M.H

Number of Poles

2P

3P

4P

Rated limit short-circuit breaking capacity level

L

M

H

L

M

H

L

M

H

Rated limit short-circuit breaking capacity Icu (kA)

DC500V

50kA

85kA

100kA

None

DC750V

None

25kA

50kA

85kA

100kA

None

DC1000V

None

25kA

50kA

75kA

85kA

DC1200V

None

40kA

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

25000 times

25000 times

25000 times

Maintainable life

50000 times

50000 times

50000 times

Electrical Life

DC500V

5000 times

DC750V

5000 times

5000 times

DC1000V

4000 times

4000 times

DC1200V

3000 times

Flashover distance(mm)

≤50 (without terminal cover)

Wiring mode

/

Thread diameter

M8 (Torque value: 15N.m)

Connection capacity

70mm²(160A), 95mm²(200A), 120mm²(250A)

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.