SIEMENS
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Siemens IC 10 · 2017
Contactor Relays
3TH4 contactor relays, 8- and 10-pole
5
Contactor relays
Type
3TH42, 3TH43
Rated data of the auxiliary contacts
Load rating with AC
Rated operational currents
I
e
• AC-12
A
16
• AC-15/AC-14, for rated operational voltage
U
e
230 V
A
10
400 V
A
6
500 V
A
4
690 V
A
2
Rated power of three-phase motors
According to utilization categories AC-2 and AC-3, 50 Hz
230/220 V
kW
2.4
400/380 V
kW
4
500 V
kW
4
690/660 V
kW
4
Load rating with DC
Rated operational currents
I
e
DC-12, for rated operational voltage
U
e
• 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
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
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
U
e
• 1 conducting path
Up to 24 V
A
10
48 V
A
5
110 V
A
1
220 V
A
0.45
440 V
A
0.25
600 V
A
0.2
• 2 conducting paths in series
Up to 24 V
A
10
48 V
A
10
110 V
A
2.5
220 V
A
0.75
440 V
A
0.5
600 V
A
0.4
• 3 conducting paths in series
Up to 24 V
A
10
48 V
A
10
110 V
A
10
220 V
A
2
440 V
A
0.9
600 V
A
0.8
Switching frequency
Switching frequency
z
in operating cycles/hour
• Rated operation for utilization category
AC-12/DC-12
h
-1
1 000
Dependence of the switching frequency
z’
on
the operational current
I
’
and operational
voltage
U
’:
z’
=
z
(
I
e
/
I
’
)
(
U
e
/
U
’)
1.5
1/h
AC-2
h
-1
500
AC-3
h
-1
1 000
AC-15/AC-14
h
-1
3 600
DC-13
h
-1
3 600
• No-load switching frequency
h
-1
10 000
© Siemens AG 2016