Siemens 3AH37 Operating Instructions Manual page 49

Fig. 67 Installing busbars flat
9229 9992 176 0D
2013-07-08
Corresponding to the rated current strength, use M12 screws and nuts - strength
class 8.8 - for connection of the busbars and use the appropriate spring elements
and washers.
Note
For vacuum circuit-breakers with connecting bars, it is recommended to use the
stainless steel screws or non-magnetisable screws included in the accessory
pack.
When tightening the screws, hold the nuts against tightening torque of 70 Nm with
a suitable screwdriver or socket wrench.
Screw-in depths in the upper and lower terminals
See dimension drawings.
Fig. 68 Installing busbars flat
Installation
49