Siemens SIRIUS 3RH Series, System Manual

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SIRIUS 3RT2 contactors/contactor assemblies
2.8 Technical data
SIRIUS Innovations
274
System Manual, 01/2011, A8E56203870002-03
2.8.4.3 Conductor cross-sections - 3RH2. contactor relays
Table 2- 116 Conductor cross-sections - 3RH2. contactor relays
Type 3RH21, 3RH22 3RH24
Size S00 S00
Conductor cross-sections (1-wire or 2-wire connection possible)
Auxiliary conductor connections and coil terminals
Screw connection

Solid + stranded
mm
2
2 x (0.5 to 1.5); 2 x (0.75 to 2.5) acc. to IEC 60947;
max. 2 x 4
 Finely stranded with end sleeve
mm
2
2 x (0.5 to 1.5); 2 x (0.75 to 2.5)
 AWG cables, solid or stranded AWG 2 x (20 to 16); 2 x (18 to 14); 2 x 12

Connection screws
M3
- Tightening torque Nm
(lb.in.)
0.8 to 1.2 (7 to 10.3 lb.in.)
Auxiliary conductor connections and coil terminals (basic device) Spring-loaded connection
 Solid + stranded mm
2
2 x (0.5 to 4)

Finely stranded with end sleeve
mm
2
2 x (0.5 to 2.5)

Finely stranded without end sleeve
mm
2
2 x (0.5 to 2.5)

AWG cables, solid or stranded
AWG 2 x (20 to 12)
Auxiliary conductor connections for auxiliary switch block mounted
on the front
 Solid
mm 2 2 x (0.5 to 2.5)

Finely stranded with end sleeve
mm
2
2 x (0.5 to 1.5)

Finely stranded without end sleeve
mm
2
2 x (0.5 to 1.5)

AWG cables, solid or stranded
AWG 2 x (20 to 14)
Auxiliary conductor connections and coil terminals Ring cable lug connection
Connection screw M3 (Pozidriv size PZ 2)
 Operating tool
mm ∅ 5 … 6
 Tightening torque Nm 0.8 to 1.2
mm d
2
= min. 3.2 
Usable ring cable lugs
mm d
3
= max. 7.5
- DIN 46237 with insulating sleeve
- JIS C2805 type RAV with insulating sleeve
- JIS C2805 type RAP with insulating sleeve
- DIN 46234 without insulating sleeve
- DIN 46225 without insulating sleeve
- JIS C2805 type R without insulating sleeve
PP
≥
1)
A shrink-on sleeve must be used to provide
additional insulation for the ring cable lugs
1)
.
 Application temperature: -55 °C/+155 °C

UL 224 approved

Flame-protected