Replacing The Lv Hrc Fuses - Siemens SINAMICS G150 Operating Instructions Manual

Maintenance and servicing
11.4 Replacing components
11.4.10

Replacing the LV HRC fuses

Description
NH fuses (low-voltage high-breaking-capacity fuses), also called knife fuses, are used, for
example, in the on/off switches of the power supplies.
Figure 11-12 NH fuse
Preparatory steps
● Keep the safety equipment close at hand: NH fuse puller with forearm protection for NH
fuse-links
● Observe the national safety regulations.
Figure 11-13 NH fuse puller with forearm protection for NH fuses
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Converter cabinet units
Operating Instructions, 07/2016, A5E03347396A