Siemens 3UG4 User Manual page 325

Mounting
The terminal supports can be snapped onto 35 mm DIN rails according to DIN EN 50022.
They can also be screw-mounted.
The figure below shows how the terminal support for stand-alone assembly is mounted and
disassembled, based on the example of an analog setting current monitoring relay.
Table 13- 3 Mounting the terminal support (screw connection in the main circuit)
Step Instructions
1 Guide the current monitoring relay into the terminal
support from below.
2 Tighten the screws on the terminal support with a
Pozidriv size 2 (S00) or Pozidriv size 3 (S0)
screwdriver (tightening torque 0.8 to 1.2 Nm).
Check that the cable is clamped tight.
Table 13- 4 Mounting the terminal support (spring-loaded connection in the main circuit)
Step Instructions
1 Insert the contacts (a) into the central opening of the
main terminals on the terminal support, with the
contacts flush to the right. Make sure that the guide
tabs are inserted into the designated slots on the
terminal support.
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004
13.1 Accessories for 3RR2 current monitoring relays
Figure
Figure
Accessories
325