Construction & Features
SKB-E series moulded case circuit breaker is one of breakers which adopts international advanced design, manufacture technology to develop.
The rated insulating voltage is 500V, suitable for AC 50/60Hz, rated working voltage 500V or below, rated working current is 15A-400A of circuit and use in distributing electric energy.
The product conforms to IEC 60947-2 standard.
Specifications
Type | 100F | 100N | 250F | 250N | 400N | 400H | ||
Number of Pole In at 40℃ | 3 | 1 | 3-4 | 3 | 3 | 3-4 | 3-4 | |
Rated Current(A) | 15,16,20,25, | 100,125, | 250,300, | |||||
Rated Insulating Voltage(V) Ui | 690 | 690 | 690 | 690 | 690 | 690 | 690 | |
Rated Impulse Withstand Voltage (kv) Uimp | 6 | 6 | 6 | 6 | 6 | 8 | 8 | |
Rated Operational Voltage(V) Ue | AC 50/60Hz | 550 | 415 | 550 | 550 | 550 | 550 | 550 |
DC | 250 | 125 | 250 | 250 | 250 | 250 | 250 | |
Electrical Characteristics as Per IEC 60947-2,EN60947-2, JISC8201-2-1 | ||||||||
Ultimate Breaking IcCapacity(kA rms) | AC 50/60Hz 110/130V | 25 | 25 | 25 | 25 | 50 | - | - |
220/230/240V | 25 | 18 | 25 | 25 | 50 | 85 | 100 | |
380V | 10 | 2.5 | 18 | 18 | 25 | 36 | 50 | |
400/415V | 10 | 2.5 | 15 | 18 | 25 | 36 | 50 | |
400V | 7.5 | - | 10 | 15 | 20 | 36 | 50 | |
550V | 5 | - | 5 | 5 | 8 | 15 | 20 | |
DC 215V(1P) | 5 | 5 | 5 | 5 | 20 | - | - | |
250V (2P in series) | 5 | - | 5 | 5 | 20 | 20 | 40 | |
Rated Service Breaking Ics | %Lcu 110-400V | 50% | 50% | 50% | 50% | 50% | 50% | 50% |
415-550V | 50% | 50% | 50% | 50% | 50% | - | - | |
Suitability for Isolation | ■ | ■ | ■ | ■ | ■ | ■ | ■ | |
Utilisation Category | A | A | A | A | A | A | A | |
Pollution Degree | 3 | 3 | 3 | 3 | 3 | 3 | 3 | |
Endurance(C-O cycles) | Mechanical | 8500 | 8500 | 8500 | 10000 | 10000 | 4000 | 4000 |
Electrical In/415V | 1500 | 1500 | 1500 | 5000 | 5000 | 1000 | 1000 | |
