Maintenance
56
9229 9860 176 0E
2013-08-22
Interrupter service life
If switching operations occur frequently under overload or short circuit, the service
life of the vacuum interrupters may be reached prematurely.
Replace the interrupters after reaching the maximum permitted operating cycle
number of 10 000 mechanical or electrical load setting changes (up to the rated cur-
rent).
When ordering vacuum interrupters, please always state the circuit-breaker type
and serial number (see “Rating plate” on page 35).
Accessories and spare parts
Replacing spare parts
To ensure that the device operates reliably, spare parts must be replaced only by
trained and certified personnel.
Fig. 74
Accessories available for order
Always specify the vacuum circuit-breaker's type and serial no. (see “Rating plate”
on page 35) when ordering spare parts.
CAUTION
Risk of injury!
The vacuum circuit-breaker should be taken out of the switch cabinet or switch-
gear for servicing.
Separate vacuum circuit-breakers from the control feed voltage or switch it off
and disconnect the low-voltage plug or clip connection.
Accessory/spare part
Order no.
Comments
Operating instructions
9229 9860 100
Hand crank
3AX1530-2B
Lubricant
see “Special operating condi-
tions” on page 54
Vaseline (contact grease)
e. g. Atlantic white, Atlantic Mineralölwerk GmbH
Pasty consistency, flame point
210 °C, low acid
Summary of Contents for 3AH3
Page 4: ...4 9229 9860 176 0E 2013 08 22 Blank page ...
Page 16: ...Transport storage and packing 16 9229 9860 176 0E 2013 08 22 Blank page ...
Page 52: ...Operation 52 9229 9860 176 0E 2013 08 22 Blank page ...
Page 58: ...Maintenance 58 9229 9860 176 0E 2013 08 22 Blank page ...
Page 60: ...Index of keywords 60 9229 9860 176 0E 2013 08 22 Blank page ...
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Page 63: ...9229 9860 176 0E 63 2013 08 22 Blank page Siemens Parts ...