ABB SACE Emax 2 Series Operating Instructions Manual page 11
Low voltage air circuit-breaker
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Altitude The circuit breaker maintains its rated operating characteristics up to 2000 m above sea level.
Electromagnetic compatibility The use of specific devices in industrial installations may cause electromagnetic interference in the
Storage Environment Store the circuit breaker in a dry, dust-free environment free of harsh chemicals.
8 | © 2023 ABB | 1SDH001330R1002 - ECN000297030
Once this altitude is passed, you need to consider reduction of dielectric strength and reduced cooling
capacity of the air.
The following are the corrections expressed as a percentage to be applied to the parameters according
to altitude:
Altitude
Rated service voltage (V) Ue
Rated current (A) at 40°C
electrical system.
The SACE Emax 2 circuit-breakers were developed and tested in an EMC environment in accordance with
IEC 60947-2, Annex J and F.
The storage ambient temperature must be:
• Circuit-breaker in the original packaging, without protection trip unit or Ekip Dip trip unit, between
-40 ° C and +85 ° C, -40 °F e +185 °F.
• Circuit-breaker in the original packaging, with Ekip Touch protection trip unit, between -25°C and
+ 85°C, -22°F e +185°F.
NOTE: the storage conditions may differ from the usage conditions.
2000 m /
3000 m /
4000 m /
6600 ft
9900 ft
13200 ft
100%
88%
78%
100%
98%
93%
Circuit-breakers E1.2-E2.2-E4.2-E6.2
3 - Environmental conditions
ABB | SACE Emax 2
5000 m /
16500 ft
68%
90%
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