User Manual

Accessories
14.1 Accessories for 3RR2 current monitoring relays
3UG4 / 3RR2 monitoring relays
312 Manual, 02/2013, NEB927043002000/RS-AA/002
14.1.2 Terminal support for stand-alone assembly
Description
For a stand-alone assembly or if an overload relay is being used at the same time, adapters
for stand-alone installation are available for separate DIN rail mounting or screw mounting.
The accessories are exactly the same as the accessories for the 3RU21 thermal overload
relay and the 3RB3 solid-state overload relay.
Table 14- 2 Stand-alone assembly of the 3RR2 current monitoring relay
Size Connection system Terminal support for stand-
alone assembly
Screw-type 3RU2916-3AA01 S00
Spring-loaded 3RU2916-3AC01
Screw-type 3RU2926-3AA01 S0
Spring-loaded 3RU2926-3AC01
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 14- 3 Mounting the terminal support (screw-type connection system)
Step Operating instruction Figure
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.
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