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When NXAIR M switchgear is used in regions with high air humidity or considerable temperature fluctuations,
there is risk of condensation. The formation of condensation should be an exception under normal operating
conditions. To prevent condensation, rusting or other serious consequences, the associated preventive
measures must be taken by installing electrical heating equipment in the switchgear.
The ambient air must not be significantly polluted by dust, smoke, corrosive and/or flammable gases, vapors
or salt.
* If NXAIR M is used under other service conditions than normal service conditions acc. to IEC 62271 Part 1
regarding ambient air temperature, the permissible current ratings of feeder and busbar can deviate. In this
case, please contact your regional Siemens representative to clarify the permissible current values.
4.9
Vacuum circuit-breaker type 3AE
The vacuum circuit-breaker type 3AE is a 3-pole indoor circuit-breaker for ratings of 24 kV. Depending on the
design of the NXAIR M switchgear, circuit-breakers type 3AE1 and type 3AE5 are used. The assignment of
the circuit-breaker matching with the respective panel is shown on the rating plate.
A rating plate is provided on the operating mechanism unit of every circuit-breaker type 3AE.
Fig. 2: Circuit-breaker type 3AE1
(1)
Rating plate on circuit-breaker
4.10 Operating instructions for circuit-breaker type 3AE
For circuit-breakers type 3AE, separate operating instructions are available with detailed instructions and
information. The operating instructions are supplied as standard with every circuit-breaker type 3AE.
Additional operating instructions in different languages can be ordered at the regional Siemens
representative.
Fig. 4: Operating instructions for
circuit-breaker type 3AE
139-2021.9 / 07
1
Fig. 3: Circuit-breaker type 3AE5
Available operating instructions
Language
German
Polish
Russian
Italian
English
French
Spanish
Portuguese
Romanian
NXAIR M
Technical data
1
Order number
9229 0001 100 0F
9229 0001 155 0F
9229 0001 156 0F
9229 0001 172 0F
9229 0001 176 0F
9229 0001 177 0F
9229 0001 178 0F
9229 0001 179 0F
9229 0001 302 0F
15
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