DC Molded Case Circuit Breaker, MCCB, Icu=Ics

Application

The NDM3Z-630 DC molded case circuit breaker (hereinafter referred to as circuit breaker) applies to the DC system application environment and the electric circuit with the working voltage of DC1000V and the working current of 1250A.

With the overload, short circuit and undervoltage protection functions, the circuit breaker can protect lines and power equipment from damage.

Specification:

• Rated Current of Frame Inm: 630A
• Rated Current In: 400, 500, 630, 1000(in parallel), 1250A(in parallel)
• Rated Insulation Voltage Ui: 1000V
• Rated Impulse Withstand Voltage Uimp: 8kV
• Rated Working Voltage Ue: DC 500/690/750/1000V
• Power Frequency Withstand Voltage U (V): 3500/60s
• Utilization Category: A
• Mechanical Life: 5000 times (maintainable free life)

10000 times (maintainable life)

• Electrical Life: 1000 times
• Number of Poles: 2P / 3P / 4P / 4P (parallel)
• Rated limit short-circuit breaking capacity Icu (kA): 35 / 8 / 40 / 40 / 30 / 20
• Rated operating short-circuit breaking capacity Ics (kA): 35 / 8 / 40 / 40 / 30 / 20

Product certification and implementation standard:

• Product certificate：CCC,CE,TUV；
• Product certification standard：GB/T 14048.2, IEC60947-2,

GB/T 14048.1, IEC60947-1

Normal Working conditions:

• Ambient temperature：-35℃～+70℃, the average within 24h shall not be more than +35℃. If the ambient temperature is higher than +50℃, the user needs to reduce the capacity.
• Stored ambient temperature：-40℃～+75℃
• Altitude：≤2000m
• Pollution degree: 3
• Its relative humidity at an ambient temperature of +40℃ should not exceed 50%. A higher relative humidity is allowed at a lower temperature. For example, the relative humidity at 20 ℃ can reach 90%, for frost dur to temperature change, the corresponding measures shoud be taken.

Packaging and storage:

• Minimum packing quantity

1 piece / box

• Products should be stored in the warehouse where there is ventilation. The relative humidity there should not exceed 80%, and the ambient temperature there is between -40℃ to +75℃. In addition, there should not be acidic, alkaline and corrosive gas in the air.
• Products should not be deposited more than 3 years in the above mentioned conditions since the producing date.