ABB SACE Emax 2 Series Operating Instructions Manual page 178
Low voltage air circuit-breaker
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Derating due to temperature In certain installations, the circuit-breakers could end up operating at a temperature above the reference
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temperature (40 °C). In such cases the rated capacity of the circuit-breaker may be reduced. To find out
the percentage of reduction to be applied to the capacity consult the following table:
Emax 2 E1.2 Temperature [°C]
< 40
45
E1.2 250
100%
100%
E1.2 630
100%
100%
E1.2 800
100%
100%
E1.2 1000
100%
100%
E1.2 1250
100%
100%
E1.2 1600
100%
100%
Emax 2 E2.2 Temperature [°C]
< 40
45
E2.2 250
100%
100%
E2.2 630
100%
100%
E2.2 800
100%
100%
E2.2 1000
100%
100%
E2.2 1250
100%
100%
E2.2 1600
100%
100%
E2.2 2000
100%
100%
E2.2 2500
100%
100%
Emax 2 E4.2 Temperature [°C]
< 40
45
E4.2 2000
100%
100%
E4.2 2500
100%
100%
E4.2 3200
100%
100%
E4.2 4000
100%
100%
Emax 2 E6.2 Temperature [°C]
< 40
45
E6.2 4000
100%
100%
E6.2 5000
100%
100%
E6.2 6300
100%
100%
50
55
60
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
98%
95%
50
55
60
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
95%
100%
100%
98%
50
55
60
100%
100%
100%
100%
100%
100%
97%
93%
89%
94%
90%
86%
50
55
60
100%
100%
100%
100%
100%
100%
95%
91%
87%
ABB | SACE Emax 2
65
70
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
93%
90%
65
70
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
100%
98%
91%
87%
94%
90%
65
70
100%
100%
100%
100%
86%
82%
83%
80%
65
70
100%
100%
98%
95%
84%
81%
Mechanical characteristics
4 - Technical characteristics
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