Page 176 - Sace Emax 2 Manual for design engineers

ABB | SACE Emax 2
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%

174 | © 2020 ABB | 1SDH001330R1002 - ECN000134959 - Rev. A Mechanical characteristics | 5 - Technical characteristics