Molded Case Circuit Breaker, MCCB

Application

The NDM3-160 MCCB applies to infrequent switching of citcuits with the AC 50/60Hz, the working voltage of AC690V and working current of 160A as well as infrequent motor starting. 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: 160A
• Rated Current In: 125, 140, 160A
• Rated Insulation Voltage Ui: 1000V
• Rated Impulse Withstand Voltage Uimp: 8kV
• Rated Working Voltage Ue: AC 380/400/415V, AC660/690V
• Power Frequency Withstand Voltage U (V): 3500/60s
• Utilization Category: A
• Mechanical Life: 20000 times
• Electrical Life: 8000 times
• Number of Poles: 3P 4P
• Braking Capacity Level: C L M /
• Rated limit short-circuit AC380/400/415V 40 50 70 70

breaking capacity Icu AC500V / / / /

(kA) AC660/690V / / 20 20

• Rated operating AC380/400/415V 30 40 50 50

short-circuit breaking AC500V / / / /

capacity Ics (kA) AC660/690V / / 10 10

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 +40℃, 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.