Siemens 3UG4 - Page 65

3RR2 current monitoring relays
4.4 3RR21 current monitoring relays
3UG4 / 3RR2 monitoring relays
Manual, 05/2016, NEB927043002000/RS-AC/004
65
Connections 3RR2143 (size S2)
3RR2143-1....
3RR2143-3....
Design of the electrical connection
• for main current circuit
screw-type terminals
• for auxiliary and control current
circuit
screw-type terminals spring-loaded terminals
Product function
• removable terminal for main circuit
No
• removable terminal for auxiliary and
control circuit
Yes
Type of the connectable conductor
cross-section
• for main contacts
– solid
2x (1 ... 35 mm²),
1x (1 ... 50 mm²)
– stranded
2x (1 ... 35 mm²),
1x (1 ... 50 mm²)
– finely stranded
– with conductor end processing
2x (1 ... 25 mm²),
1x (1 ... 35 mm²)
– without conductor final cutting
—
• for AWG conductors for main
contacts
2x (18 ... 2),
1x (18 ... 1)
• for auxiliary contacts
– solid
1x (0.5 ... 4 mm²),
2x (0.5 ... 2.5 mm²)
– finely stranded
– with conductor end processing
1x (0.5 ... 2.5 mm²),
2x (0.5 ... 1.5 mm²)
2x (0.25 ... 1.5 mm²)
– without conductor final cutting
— 2x (0.25 ... 1.5 mm²)
• for AWG conductors for auxiliary
contacts
2x (20 ... 14) 2x (24 ... 16)
Tightening torque
• with screw-type terminals
N·m
0.8
1.2
Verification of suitability
CE / UL / CSA