Device Replacement By Means Of Removable Terminals - Siemens SIRIUS 3UG4 Equipment Manual

System overview
3.3 Connection methods
Finely stranded with
end sleeve
AWG
3.3.3

Device replacement by means of removable terminals

Hazardous Voltage
Will cause death or serious injury.
Turn off and lock out power before working on this equipment.
The removable terminals of 3UG4 monitoring relays facilitate device replacement when
necessary. The mechanical coding on the terminals prevents mix-ups.
Note
The terminals can only be dismantled in the following order due to their arrangement on the
monitoring relay:
1. Lower, front terminal (A)
2. Lower, rear terminal (B)
3. Upper, front terminal (C)
4. Upper, rear terminal (D)
①
②
③
④
30
Permanently connected terminal
Size S00
1 x (0.5 to 2.5) mm²
1 x (20 to 12)
DANGER
Press the interlock in the direction of the removable terminal.
Remove the terminal to the front.
/ Attach the new terminal and press the terminal into the device until the interlock audibly engages.
Size S0
1 x (1 to 6) mm²
1 x (18 to 8)
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005