Siemens SIRIUS 3RU2 - Page 69

Connection
8.4 Connection cross-sections
SIRIUS Innovations - SIRIUS 3RU2 thermal overload relays / SIRIUS 3RB3 solid-state overload relays
Manual, 09/2014, A5E03656507420A/RS-AA/002
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Table 8- 4 Main conductor connection of size S2 with through-hole technology
Solid-state overload relay
The maximum diameter of the opening is 12.7 mm.
Table 8- 5 Auxiliary conductors of sizes S00, S0 and S2 on the 3RU2 thermal overload relay
Overload relay
Tool Pozidriv size PZ 2, Ø 5 to 6 mm
Tightening torque 0.8 to 1.2 Nm
Solid and stranded
2 x (0.5 to 1.5) mm²
2 x (0.75 to 2.5) mm²
Finely stranded with end sleeve 2 x (0.5 to 1.5) mm²
2 x (0.75 to 2.5) mm²
AWG 2 x (20 to 16)
2 x (18 to 14)
Table 8- 6 Removable terminal on the 3RB3 solid-state overload relay
Removable terminal
Tool Pozidriv size PZ 2, Ø 6 mm
Tightening torque 0.8 to 1.2 Nm
Solid and stranded
1 x (0.5 to 4) mm²
2 x (0.5 to 2.5) mm²
Finely stranded with end sleeve 1 x (0.5 to 2.5) mm²
2 x (0.5 to 1.5) mm²
AWG 2 x (20 to 14)