Siemens SION 3AE Series Operating Instructions Manual page 20

Withdrawable module with vacuum circuit breaker and installation accessories
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Installation accessories
Fig. 23 Securing contact systems (110) on contact arms
(120) with Ø 60 mm
Fitting the bushing and mating contact
Fig. 24 Securing the bushing (140) with mating contact
(141) onto the withdrawable frame (100) or sheet
18
On one side (round outer edge), grease the inside
of the contact system (110, on the contact fingers)
with Molykote Longterm 2.
In the case of contact arms (120) with Ø 60 mm
(rated operating current I
tems (110) without a contact arm adapter onto the
threaded rod and contact arms (pay attention to the
contact system's position: round outer edge to-
wards the contact arm).
Firmly screw down the contact system (110) with a
torque wrench.
Tightening torque for M16: 100 ±10 Nm (73.76 ±
7.38 lbs)
Tightening torque applies to greased threads only.
Grease the other side of the contact system (110)
with Molykote Longterm 2.
Screw bushings (140) with mating contacts (141),
each with
·
4 carriage bolts DIN 603 M8x25-8.8
·
contact washers and
·
hexagon nuts
onto a stainless steel sheet in the functional unit or
the rear of the withdrawable frame (100).
Tightening torque: 25 ±2 Nm (18.44 ±1.48 lbs)
Tightening torque applies to greased threads only.
Fit the bushing cover (142) from the other side.
> 1250 A), fit contact sys-
r
9229 0002 401 0A
2016-03-03

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