3RT1/3RH1 contactors
SIRIUS System Manual
3-86
GWA 4NEB 430 0999-02b
3.5 Mounting and connection
3.5.1 Mounting
Note
Note the following when mounting the cover:
• If foreign bodies, such as wood shavings, can get into the device, the con-
tactors must be covered during installation.
• If there is a danger that dirt or dust could be present, or if there is a corro-
sive atmosphere, the contactors must be installed in a housing.
• Dust deposits must be vacuum cleaned.
Attachment
options
The attachment options for the contactors are uniform.
Table 3-34: Attachment
Screw-on attachment
Figure 3-67: 3RT: Screw-on attachment (frame size S00)
Frame size Installation Removal
S00 to S3 Screw-on attachment Removed with a screwdriver
S00, S0
Snapped onto a
35 mm rail (in acc. with
EN 50 022)
Removed without a tool
S2, S3
Snapped onto a
35 mm rail (in acc. with
EN 50 022)
The snap-on spring can be opened with a
screwdriver
S3
Snapped onto a
75 mm rail
M4
The 3RT1 contactors can be screwed
onto a flat surface.
• With 2 M4 screws, diagonal
• Maximum tightening torque 2 Nm
• Washers and spring lock washers must
always be used
• The distance to grounded parts at the
side must be more than 6mm
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