SIEMENS
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Siemens IC 10 · 2017
Contactor Relays
3TH2 miniature contactor relays, 4- and 8-pole
5
1)
Contact endurance 0.1 x 10
6
operating cycles.
Contactor relays
Type
3TH2
Rated data of the auxiliary contacts
Load rating with AC
Utilization category AC-12
Rated operational current
I
e
(at 60 °C)
A
10
Utilization categories AC-15 and AC-14
Rated operational current
I
e
For rated operational voltage
U
e
230/220 V
A
4
400/380 V
A
3
500 V
A
2
690/660 V
A
1
Rated power of three-phase motors
According to utilization categories AC-2 and AC-3
110 V
kW
0.2
230/220 V
kW
0.55
400/380 V
kW
1.1
500 V
kW
1.5
690/660 V
kW
1.5
Load rating with DC
Utilization category DC-12
A
10
Rated operational current
I
e
For rated operational voltage
U
e
• 1 conducting path
1)
Up to 24 V
A
4
60 V
A
2
110 V
A
1.1
240/220 V
A
0.5
• 2 conducting paths in series
Up to 24 V
A
10
60 V
A
10
110 V
A
4
240/220 V
A
2
• 3 conducting paths in series
Up to 24 V
A
10
60 V
A
10
110 V
A
6
240/220 V
A
2.5
Utilization category DC-13
Rated operational current
I
e
For rated operational voltage
U
e
• 1 conducting path
Up to 24 V
A
2.1
60 V
A
0.9
110 V
A
0.52
240/220 V
A
0.27
• 2 conducting paths in series
Up to 24 V
A
10
60 V
A
3.5
110 V
A
1.3
240/220 V
A
0.9
• 3 conducting paths in series
Up to 24 V
A
10
60 V
A
4.7
110 V
A
3
240/220 V
A
1.2
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
1 200
DC-13
h
-1
1 200
• No-load switching frequency
h
-1
10 000
© Siemens AG 2016