Siemens SIRIUS 3UG4 - Page 29

Removable terminal
Finely stranded without end
sleeve

2 x (0.25 to 1.5) mm²
Finely stranded with end
sleeve

2 x (0.25 to 1.5) mm²
AWG 2 x (24 to 16)
Conductor cross-sections of the removable terminal blocks with spring-loaded connection
technology
Table 3-5 Removable terminal block with spring-loaded connection technology - insulation monitoring
relay 3UG458.-2AW31 / 3UG4583-2CW31 / voltage reducer module 3UG4983-2AA01
Removable terminal
Tool Ø 3.0 x 0.5 (3RA2908-1A)
Solid and stranded

2 x (0.5 to 1.5) mm²
AWG 2 x (20 to 16)
Finely stranded without
end sleeve

2 x (0.5 to 1.5) mm²
AWG 2 x (18 to 16)
Finely stranded with end
sleeve

2 x (0.5 to 1.5) mm²
AWG 2 x (18 to 16)
Connection cross-sections of the permanently connected terminal blocks with a spring-loaded
connection
The following table lists the permissible conductor cross-sections for the main conductor
terminals of the 3RR2 current monitoring relays for analog and digital setting (size S00 and S0)
with a spring-loaded connection.
Table 3-6 Permanently connected terminal block with spring-loaded connection - main conductor terminals of 3RR2 current
monitoring relays
Permanently connected terminal
Size S00 Size S0
Tool Ø3.0 x 0.5 (3RA2908-1A) Ø3.0 x 0.5 (3RA2908-1A)
Solid

1 x (0.5 to 4) mm² 1 x (1 to 10) mm²
Finely stranded with‐
out end sleeve

1 x (0.5 to 2.5) mm² 1 x (1 to 6) mm²
System overview
3.3 Connection methods
SIRIUS 3UG4 / 3RR2 monitoring relay
Equipment Manual, 07/2021, NEB927043002000/RS-AD/005 29