Catalog LV1 T 2009 Chapter 3 EN

3
3RH, 3TH Contactor Relays
3TH4 contactor relays, 8- and 10-pole
Contactors Type 3TH42/3TH43
Load side
Rated operational currents Ie AC-12
AC-15/AC-14 for rated operational voltage Ue A 16
230 V A 10
400 V A 6
500 V A 4
690 V A 2
DC-12, for rated operational voltage Ue 1 conducting path Up to 48 V A 10
110 V A 2.1
220 V A 0.8
440 V A 0.6
2 conducting paths in series
600 V A 0.6
Up to 48 V A 10
110 V A 10
220 V A 1.6
440 V A 0.8
3 conducting paths in series
600 V A 0.7
Up to 48 V A 10
110 V A 10
220 V A 10
440 V A 1.3
DC-13, for rated operational voltage Ue 1 conducting path
600 V A 1
24 V A 10
48 V A 5
110 V A 1
220 V A 0.45
440 V A 0.25
2 conducting paths in series
600 V A 0.2
24 V A 10
48 V A 10
110 V A 2.5
220 V A 0.75
440 V A 0.5
3 conducting paths in series
600 V A 0.4
24 V A 10
48 V A 10
110 V A 10
220 V A 2
440 V A 0.9
Rated power of induction motors
Acc. to utilization category AC-2 and AC-3, 50 Hz
600 V A 0.8
230/220 V kW 2.4
400/380 V kW 4
500 V kW 4
Switching frequency z
690/660 V kW 4
1)
Operating cycles per hour
during normal duty
for utilization category
1) Dependence of the switching frequency z' on the operational current I' and
operational voltage U' : z' = z ⋅(I e/I' ) ⋅(400 V/U' ) 1.5 ⋅1/h.
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Siemens LV 1 T · 2009
© Siemens AG 2009
AC-12/DC-12 h-1 AC-2 h
1000
-1
AC-3 h
500
-1
AC-15/AC-14 h
1000
-1 DC-13 h
3600
-1
3600
No-load switching frequency h -1
10000