NF SERIES Molded Case Circuit Breaker, also known as MCCB, is a kind of economic breaker, having the features as following , such as steady and reliable property reasonable structure, beautiful style, small volume etc, this breaker applies to the circuit with AC50/60Hz rated insulating voltage 660V max. Rated current 1250A as on-off operation, and take effect it also can be used as unfrequent conversion of line and unfrequent start of motor
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Type
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NF30-CS
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NF50-CS
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NF60-CS
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NF100-CS
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NF250-CS
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NF400-CS
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NF630-CS
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NF800-CS
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NF1250-CS
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Rated current of frame(A)
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30
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50
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60
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100
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250
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400
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630
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800
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1250
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Rated current (40℃)
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3,5,10
15,20,30
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10,15,20
30,40,50
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60
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60,70,100
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125,150,175
200,225,250
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250,300
350,400
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500,600,630
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500,600,630
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800,1000
1200,1250
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Rated insulation voltage(V)
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600
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Rated ultimate short circuit breaking capacity(KA)
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1.5
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5
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5
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18
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18
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25
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25
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35
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85
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Pole Number(P)
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3
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2,3
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3
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2,3
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3
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3
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3
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3
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3
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a
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67.5
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75
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75
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60,90
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105
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140
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210
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210
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406
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b
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96
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130
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130
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155
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165
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275
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275
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275
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210
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c
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67
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86
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86
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86
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86
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132
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155
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155
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140
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d
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52
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68
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68
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68
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68
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103
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103
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103
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190
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