Siemens 3UG4 - Page 25

System overview
3.3 Connection methods
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004
25
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
Instructions
Figure
1 Insert the screwdriver into the
respective operating slot.
2 Press the screwdriver down, then
push it into the operating slot as far
as it will go.
The screwdriver blade keeps the
spring-loaded terminal open
automatically.
3 Insert the conductor into the oval
connection slot.
4 Remove the screwdriver. The
terminal closes and the conductor
is now securely clamped.
Note
Damage to spring-loaded terminal on the 3RR2 current monitoring relay!
If you insert the screwdriver into the central opening (main circuit S00 and S0 only) on the
spring
-loaded terminal, this could damage the terminal.
Do not insert the screwdriver into the central opening on the spring-loaded terminal.