Siemens SINAMICS S120 - Replacing the LV HRC Fuses

Maintenance and servicing
6.4 Replacing components
Cabinet Modules NEMA
Manual, 04/2014, A5E03586450A
319
6.4.11.6
Replacing the LV HRC fuses
Description
LV HRC fuses (low-voltage high-rupturing capacity fuses), also called blade fuses, are used
in the main switches of the line supply, for example.
Figure 6-28 LV HRC fuse
Preparatory steps
● Disconnect the cabinet from the power supply (do not forget the external power supplies).
● Have protective equipment at the ready: LV HRC fuse grip with sleeve for LV HRC fuse
links
Figure 6-29 LV HRC fuse grip with sleeve for LV HRC fuses