Stud-Type Bushings; Terminal Boxes, End Shields, Grounding Conductors, Sheet Metal Fan Covers; Terminal Board And Grounding; Tightening Torques Of Additional Connecting Terminals - Siemens SIMOTICS XP 1MB 1 Series Operating Instructions Manual

Technical data
A.1 Tightening torques
Non-standard tightening torques
Different tightening torques for electrical connections and bolted connections for parts with
flat seals or insulating parts are specified in the relevant sections and drawings.
A.1.2

Stud-type bushings

Table A-2 Tightening torques for stud-type bushings
Thread ∅
Min.
Nm
Max.
A.1.3

Terminal boxes, end shields, grounding conductors, sheet metal fan covers

If no other tightening torques are specified, then the values in the following table apply.
Table A-3 Tightening torques for screws on the terminal box, end shields, screw-type grounding conductor connections
Thread ∅ M3.5
Nm min. 0.8
max. 1.2
Tightening torque for the condensation drain plug
Tighten the condensation drain plug M6x0.75 with a torque between 1.5 and 2.0 Nm.
A.1.3.1

Terminal board and grounding

Table A-4 Tightening torques for electrical connections on the terminal board and grounding
Thread ∅ M3.5
min. 0.8
Nm
max. 1.2
A.1.4

Tightening torques of additional connecting terminals

Table A-5
Main terminal box
EN 60999-1: 2000 table 4 III
Auxiliary terminal box
170
M4 M5 M6
1 1.6 2.5
1.2 2
M4 M5
2 3.5
3 5
M4 M5
0.8 1.8
1.2 2.5
Tightening torques for electrical connections of monitoring equipment and anti-
condensation heating
M8 M10
5 8
3 6 10
M6 M8 M10
6 16
9 24
M6 M8
2.7 5.5
4 8
min 0.6 Nm
M12 M16
13 25
15.5 30
M12 M16
28 46 110
42 70 165
M10 M12
9 14
13 20
0.4 Nm
max 0.8 Nm
1MB..1/2/3/4 - shaft heights 63 ... 355
Operating Instructions, 11/2023, A5E52779900A
M20
42
52
M20
225
340
M16
27
40