Siemens Control Relays

3TH2 SIMICONT� Type 3TH2

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General
Relay With Relay With Relay for Tab
Screw Terminals Tab Connections Connection or Plug-in

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3TH2022 -OAK 6 3TH2040-1AK6 3TH2031-3AK6

Auxiliary Auxiliary Plug-in

Contacts Contacts Socket

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3TX4440-0A 3TX4440-08 3TX4491-2A

Description
3TH2 SIMICONT control relays feature
a double bridge contact design that
insures a high degree of contact
reliability at low energy levels. The
contacts are rated NEMA A600 for
tM
international standards, the terminals
are marked according to both North
American and International standards.
A wide range of 50 and 60 Hz AC and
3TH2000-0ACD Screw terminal type
which will accept two
(2) solid or stranded
wires.
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DC control voltages are available. 3TH20o:::J-1A[JJ Fast on "tab"
heavy duty control circuit applications. Note: Coils and contacts are an integral connectors which
Auxiliary contact blocks and a surge part of the relay and cannot be accept two (2)
suppressor can be snapped onto the changed. 0. 110" X 0.032"
front of the control relay. (2.8mm x O.Bmm)
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Three different types of wire

SIMICONT control relays meet or terminations are available within the push on connectors
exceed the requirements of NEMA, UL, SIMICONT control relay line. per terminal.
CSA, IEC, VDE and other 3TH20CD-3ACIJ Fast on"tab"
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connectors which will

accept one (1)
0.220" X 0.032"
(6.3mm x O.Bmm)
push on connectors
per terminal.
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SIMICONT Control Relay Features: • Can be used as part of the Siemens includes 3TF2 Contactors, 3UA7
Compact 45mm mounting width Miniature CONTrol Products Overload Relays and 7PU8 Timers)
offering. A comp lete compact line of
•

which minimizes panel space, wiring

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35mm DIN rail or panel mounting

control products (which also time and shipping weight.
•

• Coil and terminal connections are on

single level for easy connection
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Contactor Overload Relay Relays Timers

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S1emens Industrial Control Products

 Siemens Control Relays
3TH2 SIMICONT@ Type

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Technical
Type 3TH20, 21. 22 Type 3TH20,21,22
Mechanical Life AC Oper. 10Million Coil Voltage Tolerances
Make/Break Operations DC Oper. 30Million AC 0.8 to 1.1 U s

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@, '11 and @ ratings DC 0.8 to 1.1 U8
0.7 to 1.25 U8 for special
Rated Control Voltage Max.AC 600V olts DC operated device
Max.DC 250V olts
Operating timesG:l 0.8 to 1 .1 X U5
Contact Rating - NEMA NEMAA 600-Heavy Duty Total Break Time=
Make/Break Capability Make Break Opening Delay + Arcing Time
VA Amps VA Amps
AC Operation Closing Delay NO 5- 20 ms

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120V 7200 60 720 6
NC 3· 20ms
240V 7200 30 720 3
OpeningDelay NO 3- 24 ms
480V 7200 15 720 1.2
NC 4- 12 ms
600V 7200 12 720 1.2
Arcing Time 10 ms

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NEMA Q 300-Heavy Duty
Amps DC Operation Closing Delay NO 16-140 ms
NC 4- 10 ms
0.55
Opening Delay NO 3- 6ms
0.27
NC 13- 40 ms
Continuous Current Rating 10 A at 240V AC Arcing Time 10ms

3TH27

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Rated Currents -IEC Coil Signal Duration for
Continuous Current le /AC 12 (AC-1) 10A AC Operation Closing min. 35ms
Rated Operational Current le Opening min. 30ms
DC Operation Closing min. 80ms
Opening min. 30 ms
AC-15/AC-14 (AC-11) 110/ 220/ 230 v 4A
Operation TimesG:l 1.0 xu.
380/ 400 V 3A
AC Operation ClosingDelay NO 6- 17 ms

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500V 2A
NC 5- 20 ms
660/ 690 v 1A
Opening Delay NO 3- 24ms
NC 5· 12 ms
le /DC-12/DC 1, Current Path in Series
at RatedV oltage 1 3
DC Operation Closing Delay NO 18- 42 ms
24V 4 A 10 A NC 4- 10ms
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60V 2 A 10 A OpeningDelay NO 3- 5ms
110V 1.1 A 6 A NC 15- 26ms
220V 0.5 A 2.5A
Switching Frequency z
le DC·13(DC-11)
In Make/Break Operations perHour
at RatedV oltage 24V 2.1 A 10 A
at Rated Operation for Duty
60V 0.9 A 4.7A
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AC-12/DC-12 1000/ h
110V 0.5 A 3 A
AC-2 500/h
220V 0.27A 1.2A
AC-3 1000/h
Ambient Temperature Range -25 to + 55°C AC-15/AC-14 and
Coil Ratings DC-13 1200/ h
(With Cold Coil and 1.0 X Usl
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50Hz 60Hzl2l 50/ 60Hzl2l

AC Operation Inrush 15VA 14.4VA 16.5/ 13.2VA No-load Switching Frequency 10,000/ h
p.f. 0.41 0.36 0.43/0.38 Conductor Sizes
Sealed 6.8VA 6.1 VA 5.4/8.0VA Screw Terminals; Solid or Stranded ( 2) # 14-12AWG
p.f. 0.42 0.46 0.48/0.42
DC Operation Inrush= p.f. 3W, 1.2W at 24V for speciaiDC Resistance to Shock
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operated device (Rectangular Pulse)

Coil Ratings for 3TH27 (With Cold Coil and 1.0 x Usl AC Operation 7/ 5 and 4/ 10 g/ms
AC Operation Inrush 22VA; ip.f. = 0.41 DC Operation 10/ 5 and 6/10 g/ms
Release 6.8VA; p.f. = 0.42
DC Operation Inrush 3W
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Release 3W ....
Contact Life ..
·--- - -
3C
..
The contact life
depends primarily
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on the breaking �
current. It is
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assumed that the 0

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control devices !
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operate randomly,
i.e. not Jc

synchronized with � i'l

i0.1
the phase angle of 0-01 0.03 0.05 0.1 0.3 0.5 1 2 3 �5 7101a1A)
the system. I'a
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GlThe opening delay increases when surge suppressors

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®50 and 60Hz coils; coil voltage tolerance0.8 to 1.1 x U6 continuous duty. with devices mounted side by side
are used (diode 6 to 9 times, varistor 2 to 5 ms) at 50 Hz ope<ation 40•C is the maximum allowable without air gap. Values in brackets = Power
ambient temperaturewhen operat1on coils at 1.1 x U5 consumption of coil at 50 Hz.

Siemens Industrial Control Products

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 Siemens Control Relays

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3TH2 SIMICONT® Type
Wiring Diagrams

Terminal Designations According to DIN EN 50 011

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4 NO 3 NO + 1 NC 2 NO +2 NC
Code:40E 31E 22E

.-4. 3TH20 -1 relaysAC and DC operation

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3TH20. .•

with screw terminals, with tab connectors 2.8mm-{).8mm Diode V aristor

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RC Element
With V aristor

4 NO 3 NO +1 NC 2 NO +2 NC
Code:40E 31E 22E Surge Suppressors

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3TH20..-3, 3TH20 -6, 3TH20 ..-7 relays AC and DC operation with

tM
tab connectors 6.3mm-{).8mm, with solder-pin connections
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B NO 7 NO +1 NC 6 NO +2 NC
Code:SOE 71E 62E
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5 NO+ 3 NC 4 NO + 4 NC
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Code: 53E 44E

3TH2040 relay with 3TX44•.-4 auxiliary contact block, also

3TH21 or 3TH22 relays.
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j53j63 j73j 83 j5 3 1 1 73j 83

, j53 1
't j
1 83

l�J�J;J 84 ��� ;];�

6 84 ��� ;; 1
6 2 84
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4 NO 3 N0+1 NC 2 NO + 2 NC
Code:40 31 22

j53 1
' �,1 1

��� 62 2 62
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2 NO 1 NO+ 1 NC 2 NC
Code: 20 11 02

3TX44..-2 auxiliary contacts

.JE.1 :-,i�-: j 13 31j 43

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'lEi' '1t2 '"'\ - - -
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\14 2 32, 44
4 NO 3 NO + 1 NC 2 NO + 2 NC
Code: 40E 31E 22E
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3TH27relay

Siemens Industrial Control Products

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