SIEMENS
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Siemens IC 10 · 2017
Contactors for Special Applications
3TK20 miniature contactors for resistive loads (AC-1), 4-pole
4
Type
3TK20
Size
00
Conductor cross-sections
Main and auxiliary conductors
(1 or 2 conductors can be connected)
Screw terminals
• Solid
mm
2
2 x (0.5 ... 2.5), 1 x 4
• Finely stranded with end sleeve
mm
2
2 x (0.5 ... 1.5), 1 x 2.5
• AWG cables, solid or stranded
AWG
2 x (20 ... 14), 1 x 12
• Pin-end connector (DIN 46231)
mm
2
1 x 1 ... 2.5
• Terminal screw
M3
• Prescribed tightening torque for terminal screws
Nm
0.8 ... 1.3
lb.in
7 ... 11
Flat connectors
• When using a plug-in sleeve 6.3 – 1
mm
2
0.5 ... 1
• Finely stranded with 6.3 – 2.5
mm
2
1 ... 2.5
Solder pin connections
(for printed circuit boards only)
• Solder pin cross-section
(does not apply to
plug-in bases)
mm
2
0.8 x 1.2
Type
3TK20
Size
00
Auxiliary contacts
General data
Standards
IEC 60947-5-1
Rated insulation voltage
U
i
(Pollution degree 3)
V
690
Conventional thermal current
I
th
=
A
10
Rated operational current
I
e
/AC-12
Load rating with AC
Rated operational current
I
e
/AC-15/AC-14
• For rated operational voltage
U
e
24 ... 230 V
A
4
380 ... 400 V
A
3
500 V
A
2
660 V
A
1
690 V
A
1
Load rating with DC
Rated operational current
I
e
/DC-12
• For rated operational voltage
U
e
24 V
A
4
48 V
A
2.2
110 V
A
1.1
125 V
A
1.1
220 V
A
0.5
440 V
A
--
600 V
A
--
Rated operational current
I
e
/DC-13
• For rated operational voltage
U
e
24 V
A
2.1
48 V
A
1.1
110 V
A
0.52
125 V
A
0.52
220 V
A
0.27
440 V
A
--
600 V
A
--
© Siemens AG 2016