Siemens SINAMICS S120 Device Manual page 316

Maintenance and servicing
6.4 Replacing components
3. Unscrew and remove the screws and nuts from the rear DC fuse, which can now be
accessed.
4. Remove the rear DC fuse.
NOTICE
Device failure after a DC fuse trips
The neighboring DC fuses may also become damaged if a DC fuse trips. Failure to replace
all fuses at the same time can cause the device to fail.
• After a DC fuse trips, always replace all DC fuses at the same time. Always use fuses of
Note
Replacing a complete power unit
If you order a complete power unit as a replacement, make sure that only DC fuses are
used. If option L37 (DC interface including precharging input circuit) is installed in your
cabinet, the DC fuses of the spare part must be replaced with the copper lugs of the existing
power unit.
Replacing the DC fuses for Smart Line Module, Active Line Module, and Motor Module, frame sizes
HX and JX
Figure 6-27
316
the same type.
Replacing the DC fuses, frame sizes HX and JX
Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A