Vacuum Interrupter Service Life; Accessories And Spare Parts - Siemens 3AK Operating Instructions Manual

Maintenance
Replacing spare parts
Accessories
Hand crank for circuit-breaker
Traversing crank with hand shield for withdrawable part
Operating instructions
Operating tool for the earthing switch (manual operation)
Operating tool for the earthing switch (motor operation)
Klüber lsoflex Topas L32 lubricant
Shell Tellus lubricant
50

Vacuum 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 27).

Accessories and spare parts

To ensure that the device operates reliably, spare parts must be replaced only by
trained and certified personnel.
CAUTION
Risk of injury!
The vacuum circuit-breaker module should be taken out of the switch cabinet or
switchgear for servicing.
Separate vacuum circuit-breaker module from the control feed voltage or switch
it off and disconnect the low-voltage plug or clip connection.
Fig. 55 Accessories available for order
Always specify the vacuum circuit-breaker module's type and serial no. (see "Rating
plate" on page 27) when ordering spare parts.
Order no.
3AX1530-2B
3AX1430-2C
9229 9923 100
3AX1531-3C
3AX1531-3D
3AX1133-3H 180 g
3AX1133-3E 1 kg
3AXl 133-2D 1 kg tin
9229 9923 176 0B
2013-09-09