User Manual

System overview
3.3 Connection methods
3UG4 / 3RR2 monitoring relays
22 Manual, 02/2013, NEB927043002000/RS-AA/002
Catalog IC10 "Industrial Controls" (www.siemens.com/industrial-controls/catalogs) offers a
standard screwdriver (3 mm slot) that can be used as the operating tool for opening the
spring-loaded connections.
Spring-loaded connection for mountable 3RR2 current monitoring relays
The table below describes the procedure for creating a spring-loaded connection:
DANGER
Hazardous Voltage.
Will cause death or serious injury.
Turn off and lock out all power supplying this device before working on this device.
Table 3- 3 Connecting the 3RR2 current monitoring relay spring-loaded terminal
Step Operating instruction Image
1 Insert the screwdriver into the
bottommost (A) or topmost (B)
operating slot on the right-hand side.
2 Press the screwdriver down (A) or up
(B), then push it into the operating slot
as far as it will go.
The screwdriver blade keeps the
spring-loaded terminal open
automatically.
~10°
~10°
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%
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3 Insert the conductor into the oval
connection slot.
4 Remove the screwdriver. The terminal
closes and the conductor is now
securely clamped.
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