1. NF series thermal magnetic type molded case circuit breaker, developed  type mccb, included NF-CS, NF-SS, NF-CP, NF-SP, NF-HP, NF-CW series.

2. Rated working voltage 690V, 50HZ or 60HZ, and rated working current from 3A to 800A.

3. It mainly used in distributing electric energy and protect the electrical circuit and power equipment from damages caused by overload, short circuit or under-voltage in the distribution network.

4. It complies with IEC60947-2 and GB14048.2 standards.

Working Conditions and Mounting Environments
1. The altitude should be less than 2000m
2. The ambient medium temperature should within -5℃ to +40℃
3. This moulded case circuit breaker is resistant to moisture, salt fog, nuclear radiation, and mildew
4. The maximum tilt angle is 22.5°
5. MCCB can still work reliably if the product is subjected to vibration from ships or earthquakes(4g)

Parameters of NF-63 Moulded Case Circuit Breaker

Frame Current(A) 63
Model NF-63C NF-63S
Rated Current in(A) 10,16,20,32,40,50,63 10,16,20,32,40,50,63
Poles 2 3 4 2 3 4
Rated Voltage Ue(V) AC400
Rated Insulation Voltage Ui(V) AC690
(KA)AC400 Short-Circuit Interrupting Capacity Icu/Ics 10/5 35/20
Operation Life(cycle) Power on 6000
Power off 9000
Dimensions(mm) a 50 75 100 50 75 100
b 130 130
c 68 68
ca 90 90
Weight(kg) 0.45 0.65 0.45 0.65
Electrical-operation Device(MD)
External Rotary Handle
Automatic Tripping Device thermal-magnetic thermal-magnetic

[Download not found] Meba China Mitsubishi MCCB NF63-CP is update thermal magnetic type mccb max 63A against overload & short circuit.


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