Figure 5: Terminal box with fastening screw
Figure 6: Terminal box with grub screw
>
Then tighten the fastening components to the relevant torque, see the following table.
Table 4: Torque values for 8.8-type screws
Thread size
Torque
M5 6 Nm
M6 10 Nm
M8 25 Nm
M10 49 Nm
M12 85 Nm
M16 210 Nm
M20 425 Nm
Please note!
Terminal boxes fastened as per Fig. 6 are to be turned counter-clockwise by a maximum of
one turn away from the thread end stop. Screwed-on covers must be duly secured.
Anti-corrosion protection can be achieved with non-hardening sealing materials or sealing grease in particular on the
processed sealing surfaces of the covers of terminal boxes having the following degree of protection: "pressure-
resistant encapsulation, EEx d IIC(B) marking".
The approved sealing materials are:
• For threads and surfaces: Hylomar, by Marston-Domsel or
• for surfaces: Admosit and Fluid-D, by Teroson.
Please note!
In the case of "increased safety" terminal boxes the gaskets used are included in the
approval. Only original gaskets are to be used.
Please note!
"Pressure-resistant encapsulation“ terminal boxes must be sealed by means of ap-
proved cable or line lead-ins.
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