Siemens SIRIUS 3RH Series, System Manual

Page: 749 / 786

SIRIUS 3RR2 current monitoring relays
8.10 Technical data
SIRIUS Innovations
System Manual, 01/2011, A8E56203870002-03
749
8.10.3.5 Conductor cross sections, auxiliary circuit
Table 8- 27 Technical data for the auxiliary circuit connection, 3RR22 current monitoring relays
Type 3RR2241 3RR2242
Size S00 S0
Width 45 mm 45 mm
Connection type Screw connection

Connection screw
M3, Pozidriv size 2
 Tightening torque Nm 0.8 to 1.2
 Operating tool mm ∅ 5 to 6

Conductor cross-sections (min./max.), 1-wire or 2-wire
- Solid mm
2
1 x (0.5 to 4)
1)
, 2 x (0.5 to 2.5 mm²)
1)
- Finely stranded with end
sleeve
mm
2
1 x (0.5 to 2.5)
1)
; 2 x (0.5 to 1.5)
2)
- AWG cables, solid or stranded AWG 2 x (20 to 14)
Connection type Spring-loaded connection

Operating tool
mm 3.0 x 0.5

Conductor cross-sections (min./max.)
- Solid mm
2
2 x (0.25 to 1.5)
- Finely stranded without end
sleeve
mm
2
2 x (0.25 to 1.5)
- Finely stranded with end
sleeve
mm
2
2 x (0.25 to 1.5)
- AWG cables, solid or stranded AWG 2 x (24 to 16)
1)
If two different conductor cross-sections are being connected to one clamping point, both cross-sections must be
located in the range indicated. If identical cross-sections are used, this restriction does not apply.
8.10.3.6 Short-circuit protection
Either fuses (fused design) or motor starter protectors/circuit breakers (fuseless design) must
be used for short-circuit protection. The types of coordination must also be considered when
selecting load feeders from the tables.
References
More information ... Can be found ...
About the assignments of corresponding short-
circuit protective devices to overload relays with
contactor
In the configuration guide titled "Configuring
SIRIUS Innovations - Selection data for load
feeders in fuseless and fused designs" (order no.:
3ZX1012-0RA21-1AC0)