HUW1
Series Intelligent Universal Circuit Breaker
6
5.4
Look-up table of the working current derating with the ambient temperature change
Shell frame
level (A)
Rated current
(A)
Working current after derating (A)
+40°C
+50°C
+60°C
+70°C
1,000
200
200
200
200
200
400
400
400
400
400
630
630
630
630
630
800
800
800
800
800
1000
1000
850
850
800
2,000
630
630
630
630
630
800
800
800
800
800
1,000
1,000
1,000
1,000
1,000
1,250
1,250
1,250
1,250
1,250
1,600
1,600
1,600
1,600
1,600
2,000
2,000
1,700
1,700
1,600
3200
2,000
2,000
2,000
2,000
2,000
2,500
2,500
2,400
2,300
2,200
2,900
2,900
2,900
2,900
2,900
3,200
3,200
3,000
3,000
2,900
4,000
2,500
2,500
2,500
2,500
2,500
2,900
2,900
2,900
2,900
2,900
3,200
3,200
3,200
3,200
3,200
4,000
4,000
3,800
3,600
3,600
6,300
4,000
4,000
4,000
4,000
4,000
5,000
5,000
5,000
4,500
4,500
6,300
6,300
5,500
5,500
5,000
5.5
Recommended look-up table corresponding to the cross-sectional area of the external copper
busbar and the rated current of the circuit breaker
Rated current
(A)
Specification of external
copper busbar
width×thickness (mm)
Number of wires per
terminal (piece)
Cross-sectional area per
terminal (mm
2
)
200
20×5
1
100
400
40×5
1
200
630
40×5
2
400
800
50×5
2
500
1,000
60×5
2
600
1,250
80×5
2
800
1,600
100×5
2
1,000
2,000
100×5
3
1,500
2,500
100×5
4
2,000
2,900
100×10
3
3,000
