SACE EMAX 2 NEW LOW VOLTAGE POWER C I RCUI T BRE AKERS TO ANS I C37 / UL 1066 / CSA STANDARDS
7/8
— Circuit breaker
Temperature derating Under specific installation conditions, the circuit- breakers can operate at higher temperatures than the reference temperature of 40 °C. In this case the current-carrying capacity of the circuit- breaker may be lower than the rated current-carrying
capacity at the reference temperature requiring the application of the derating coefficients as shown. Percentage values refer to withdrawable and fixed circuit breaker. If not specified, all data refer to a copper according to IEC60947.
Emax 2 E1.2
Temperature [°C/°F] <40/104
45/113
50/122
55/131
60/140
65/149
70/158
E1.2 E1.2 E1.2 E1.2 E1.2
250 400 800
100% 100% 100% 100% 100%
100% 100% 100% 100%
100% 100% 100% 100%
100% 100% 100% 100%
100% 100% 100% 100%
100% 100% 100% 100%
100% 100% 100% 100%
1000 1200
98%
96%
94%
91%
88%
84%
Emax 2 E2.2
Temperature [°C/°F] <40/104
45/113
50/122
55/131
60/140
65/149
70/158
E2.2 E2.2 E2.2 E2.2 E2.2 E2.2
250 400 800
100% 100% 100% 100% 100% 100%
100% 100% 100% 100% 100% 100%
100% 100% 100% 100%
100% 100% 100% 100%
100% 100% 100% 100%
100% 100% 100% 100%
100% 100% 100% 100%
1200 1600 2000
98% 97%
94% 93%
90% 88%
84% 82%
78% 76%
Emax 2 E4.2
Temperature [°C/°F] <40/104
45/113
50/122
55/131
60/140
65/149
70/158
E4.2 E4.2 E4.2 E4.2 E4.2
800
100% 100% 100% 100% 100%
100% 100% 100%
100% 100% 100%
100% 100% 100%
100% 100% 100%
100% 100% 100%
100% 100% 100%
1600 2000 3200 3600
98% 98%
96% 95%
92% 92%
87% 88%
81% 85%
75% 81%
Emax 2 E6.2
Temperature [°C/°F] <40/104
45/113
50/122
55/131
60/140
65/149
70/158
E6.2 E6.2 E6.2
4000 5000 6000
100% 100% 100%
100%
100%
100%
100%
100%
100%
98% 97%
96% 94%
91% 91%
86% 88%
80% 84%
74% 81%
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