ABB | SACE Emax 2
Mechanical accessories | 8 - Technical characteristics
291 | © 2017 ABB | 1SDH001330R0002 - ECN000058721 Rev. A
Derating due to temperature
In certain installations, the circuit-breakers could end up operating at a temperature above the reference
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
50
55
60
65
70
E1.2 250
100%
100%
100%
100%
100%
100%
100%
E1.2 630
100%
100%
100%
100%
100%
100%
100%
E1.2 800
100%
100%
100%
100%
100%
100%
100%
E1.2 1000
100%
100%
100%
100%
100%
100%
100%
E1.2 1250
100%
100%
100%
100%
100%
100%
100%
E1.2 1600
100%
100%
100%
98%
95%
93%
90%
Emax 2 E2.2 Temperature [°C]
< 40
45
50
55
60
65
70
E2.2 250
100%
100%
100%
100%
100%
100%
100%
E2.2 630
100%
100%
100%
100%
100%
100%
100%
E2.2 800
100%
100%
100%
100%
100%
100%
100%
E2.2 1000
100%
100%
100%
100%
100%
100%
100%
E2.2 1250
100%
100%
100%
100%
100%
100%
100%
E2.2 1600
100%
100%
100%
100%
100%
100%
98%
E2.2 2000
100%
100%
100%
100%
95%
91%
87%
E2.2 2500
100%
100%
100%
100%
98%
94%
90%
Emax 2 E4.2 Temperature [°C]
< 40
45
50
55
60
65
70
E4.2 2000
100%
100%
100%
100%
100%
100%
100%
E4.2 2500
100%
100%
100%
100%
100%
100%
100%
E4.2 3200
100%
100%
97%
93%
89%
86%
82%
E4.2 4000
100%
100%
94%
90%
86%
83%
80%
Emax 2 E6.2 Temperature [°C]
< 40
45
50
55
60
65
70
E6.2 4000
100%
100%
100%
100%
100%
100%
100%
E6.2 5000
100%
100%
100%
100%
100%
98%
95%
E6.2 6300
100%
100%
95%
91%
87%
84%
81%
Summary of Contents for SACE Emax E1.2
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