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Position the electrician's ladder correctly in front of the panel.
Open the padlock.
Fig. 225: Operating slide on busbar earthing switch
Lift the operating slide and hold it.
Fig. 226: Lifting the operating slide;
Actuating opening for busbar earthing switch
The actuating opening for the busbar earthing switch has different receptacles for inserting the operating
lever for closing and opening the busbar earthing switch.
Fig. 227: Actuating opening for
139-2021.9 / 07
padlocked
actuating opening free
busbar earthing switch
NXAIR M
Earthing and de-earthing the busbar system
Fig. 228: Inserting the operating lever
for closing
135
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