DC-Switch
with knife contacts

G20S/G20
next ►

Table of Content

G20S/G20
DC-Switch with knife contacts

CONTENT< For direct link click on the page number >2

The most important technical data

3

Electrical data of G20S/G20 ON/OFF-Switches

4Electrical data of G20S/G20 Change-Over Switches5Pre-configured Main Switches G20

6Dimensions Pre-configured Main Switches G20

9Dimensions G20S/G20

10

The most important technical data

G20S/G20
DC-Switch with knife contacts

Ideal solution
for DC applications
The G20S and G20 switch disconnectors of the Kraus & Naimer
G-series are compact, robust, and perfectly ­suited for direct
current (DC) applications, as well as for low ­voltages andlow currents.

The most important technical data, according to IEC/EN 60947-3
Rated Insulation Voltage

Ui

690 V AC

Rated Insulation Voltage

Ui

500 V DC

Rated Insulation Voltage

Ui1000 V AC*

The G20S switches are manually operated, have a switching capacity of 1000 V/20A (DC-22A), and a high shortcircuit resistance.

Rated Thermal Current

lu/lth20 A

Maximum permissible wire gagemm2AWG

The directly operated G20 switches fulfill all the characteristics of a main switch according to IEC/EN 602041.

Single-core or stranded wire2 x 2,512Flexible wire2 x 2,5

12with sleeving in according with DIN 46228

2 x 2,5–

The G20 switches are the ideal solution not only forDC ­applications but also for AC applications with high shortcircuit resistance, as well as for systems operating at low
voltage and currents.
In compliance with EN 502742, the IP20 finger-safe terminals prevent accidental unintentional contact with live parts.

* DC possible with series connection

Ambient Temperature
between –5 °C and +40 °CGeneral Use

G20S

150 V DC

20 A

300 V AC Pilot Duty

10 A B 300a / USA

In accordance with IEC/EN 60947-33 our G20 and G20S
switch disconnectors ensure the reliable operation of contacts when opening and closing. For details, please see thetable on the right.
Of course, the G-series can also be flexibly combined withmany Kraus & Naimer extras, e. g. padlock devices.

IEC/EN 60204 – European standard for electrical, electronic and programmable electronic equipment and systems.
2EN 50274 – European standard for low-voltage switchgear and controlgear assemblies
for protection against electric shock and against unintentional direct contact with hazardous live parts.
3
IEC/EN 60947-3 – European standard for switches, disconnectors, switch disconnectors
and fuse-combination units to be used in distribution circuits and motor circuits of which
the rated voltage does not exceed 1000 V AC or 1500 V DC.
13

RatedUtilization
Category

Contacts in series

DC-21 A

DC-22 A

DC-23

DC-PV2 *Rated Operational Current le/A

Permissible Voltage
1< to the dimensions >G20S/G20 ON/OFF-SwitchesELECTRICAL DATA OF ON/OFF-SWITCHES

23G20S

45G20

660

120

180

240

300

360

2020110

220

330

440

550

660

20

1513160

320

480

640

800

960

20250

500

750

1000

–

–

20

8

330

660

990

––

–

20

6

440

880

–––

–

13

420

60

120

180

240

300

360

20

110

220

330

440

550

660

20

7160

320

480

640

800

960

20

4250

500

750

1000

–

–

20

2

330

660

990

–

–

–

10

1

440

880

–

–

–

50,5

24

48

72

96

120

144

20

20

48

96

144

192

240

288

20

1260120

180

240

300

360

155110

220

330

440

550

660

12

3160

320

480

640

800

960

82250

500

750

1000

––

51330

660

990

–

––

30,5440

880

––––

10,25

–

500

750

1000

––

20

–

G20S/G20 ON/OFF-Switches 0-1
Switches

Switch Disconnectors

G20

G20S

G20

G20S

Pole

Contacts inseries

11

G20.D101.E

70017313

G20S.D101.E

70017332

G20.TD3101.E

70095358

G20S.TD3101.E

70031783

112

G20.D201.E

70095558

G20S.D201.E

70017369

G20.TD3201.E

70095366

G20S.TD3201.E

70017384

212+1

G20.D351.E

70095564

G20S.D351.E

70095584

G20.TD3351.E70095374

G20S.TD3351.E

70009912

313

G20.D301.E

70095568

G20S.D301.E

70095593

G20.TD3301.E

70095399

G20S.TD3301.E

70100076

314

G20.D401.E

70017328

G20S.D401.E

70017379

G20.TD3401.E

70017331

G20S.TD3401.E

70017396

421

G20.D102.E

70017314

G20S.D102.E

70017334

G20.TD3102.E

70095359

G20S.TD3102.E

70009899

222

G20.D202.E

70095559

G20S.D202.E

70017370

G20.TD3202.E

70095367

G20S.TD3202.E

70009394

422+1

G20.D352.E

70095565

G20S.D352.E

70095586

G20.TD3352.E

70095391

G20S.TD3352.E

70009913

623

G20.D302.E

70095569

G20S.D302.E

70028968

G20.TD3302.E

70095551

G20S.TD3302.E

70055212

624

G20.D402.E

70095574

G20S.D402.E

70040897

G20.TD3402.E

70095554

G20S.TD3402.E

70100078

831

G20.D103.E

70095556

G20S.D103.E

70017339

G20.TD3103.E

70095361

G20S.TD3103.E

70100079

332

G20.D203.E

70095560

G20S.D203.E

70095576

G20.TD3203.E

70095369

G20S.TD3203.E

70100080

632+1

G20.D353.E

70095566

G20S.D353.E

70095587

G20.TD3353.E

70095397

G20S.TD3353.E

70009501

933

G20.D303.E

70095570

G20S.D303.E

70095594

G20.TD3303.E

70095552

G20S.TD3303.E

70100081

934

G20.D403.E

70095575

G20S.D403.E

70095683

G20.TD3403.E

70095555

G20S.TD3403.E

70100082124

1

G20.D104.E

70095557

G20S.D104.E

70017342

G20.TD3104.E

70095362

G20S.TD3104.E

70009900

442

G20.D204.E

70095561

G20S.D204.E

70095580

G20.TD3204.E70095370

G20S.TD3204.E

70009914

842+1

G20.D354.E

70095567

G20S.D354.E

70095589

G20.TD3354.E

70095398

G20S.TD3354.E

70100083

124-3

G20.D304.E

70095571

G20S.D304.E

70095595

G20.TD3304.E

70095553

G20S.TD3304.E

70100084

1251

G20.D105.E

70068225

G20S.D105.E

70017346

G20.TD3105.E

70095363

G20S.TD3105.E

70100085

552

G20.D205.E

70095562

G20S.D205.E

70095581

G20.TD3205.E

70095371

G20S.TD3205.E

70100086

1061

G20.D106.E

70017318G20S.D106.E

70017348

G20.TD3106.E

70095364

G20S.TD3106.E

70009901

662

G20.D206.E

70095563

G20S.D206.E

70095583

G20.TD3206.E

70095372

G20S.TD3206.E

70009502

12NameArt. no.

Name

Art. no.

Name

Art. no.

Name

Customized contact developments are up on request. Please be so kind and advise
the nominal current, voltage and utilization category as well as required terminal lugs.

4Art. no.

Stages< Back to the table of contents >* Ratings applicable for Switch Disconnectors in Photovoltaic

Contacts in series

Rated Operational Current le/APermissible Voltage
1DC-21 A

DC-22 A

DC-23 A

23G20S

45

6G20

160

320

480

640

800

960

20

*

250

500

750

1000

–

–

7*

330

660

990

–

–

–

2

*

440

880

–

–––

1

*

110

220

330

440

550

660

20

*

160

320

480

640

800

960

8

*

250

500

750

1000

––

3

*

330

660

990

–

––

1

*

48

96

144

192

240

288

20

*

60

120

180

240

300

360

15

*

110

220

330

440

550

660

6

*

160

320

480

640

800

960

3

*

250

500

750

1000

–

–

1

< to the dimensions >Rated
Utilization
Category*

G20S/G20-Change-Over SwitchesELECTRICAL DATA OF CHANGE OVER SWITCHES< Back to the table of contents >* Electrical data on request

G20S/G20 Change-Over-Switches 1-2
Switches
G20PoleContacts inseries

11G20.D111.E

12G20.D211.E

21

G20.D112.E

223

134

Name

G20S
Art. no.

StagesName

Art. no.

70017320

G20S.D111.E

70017350

70095684

G20S.D211.E

70017371

270024917

G20S.D112.E

70017352

2G20.D212.E

70053279

G20S.D212.E

70009940

4G20.D113.E

70017322

G20S.D113.E

70017355

32G20.D213.E

70095685G20S.D213.E

70017372

61G20.D114.E

70069004

G20S.D114.E

70017357

41G20S/G20 Change-Over-Switches with 0 position 1-0-2
Switches

Switch Disconnectors

G20PoleContacts inseries

11G20.D121.E

12G20.D221.E

13

G20.D321.E

142

Name

G20S
Art. no.

G20NameArt. no.

70095687

G20S.D121.E

70095688

G20S.D221.E

70095703

G20.D421.E

1223

1

G20.D123.E

32

G20.D223.E

41

G20.D124.E

70010138

G20SNameArt. no.

70017361

G20.TD9121.E

70017374

G20.TD9221.E

G20S.D321.E

70095709

70095705

G20S.D421.E

G20.D122.E

70017324

G20S.D122.E

2

G20.D222.E

70095689

3G20.D322.E

70095704

StagesName

Art. no.

70099364

G20S.TD9121.E

70017397

270099368

G20S.TD9221.E

70095711

4

G20.TD9321.E

70099373

G20S.TD9321.E

70048004

670095712

G20.TD9421.E

70099375

G20S.TD9421.E

70048001

870017363

G20.TD9122.E

70099366

G20S.TD9122.E

70069625

4

G20S.D222.E

70017375

G20.TD9222.E

70099369

G20S.TD9222.E

70062122

8

G20S.D322.E

70017378

G20.TD9322.E

70099374

G20S.TD9322.E

70048005

1270017327

G20S.D123.E

70095708

G20.TD9123.E

70099367

G20S.TD9123.E

70017398

670095690

G20S.D223.E

70028281

G20.TD9223.E

70099371

G20S.TD9223.E

70025000

12G20S.D124.E

70010139

G20.TD9124.E

70095706

G20S.TD9124.E

70010140

8

Customized contact developments are up on request. Please be so kind and advise
the nominal current, voltage and utilization category as well as required terminal lugs.

5Pre-configured Main Switches G20PRE-CONFIGURED MAIN SWITCHES G20
RatedUtilization
Category

Contacts in series
Permissible Voltage

Rated Operational
Current le/A G20

123424487296204896

144

192

1260

120

180

240

5110

220

330

440

3160

320

480

640

2250

500

750

1000

1

DC-23 A< to the dimensions >1

Contacts in series

max. 250 V

Pole

Art. no.
Name

Art. no.

StagesName

1

G20.TD1101/01.E

70069845

G20.TD2101/01.E

70085669

12

G20.TD1102/01.E

70052903

G20.TD2102/01.E

70054977

2

3

G20.TD1103/01.E

70069852

G20.TD2103/01.E

70028249

34G20.TD1104/01.E

70025221

G20.TD2104/01.E

70085673

45G20.TD1105/01.E

70085625

G20.TD2105/01.E

70085678

56G20.TD1106/01.E

70085628

G20.TD2106/01.E

70080031

6Art. no.

Stagesmax. 500 V

48 x 48 mm

Pole

Art. no.
Name

Name

1

G20.TD1201/01.E

70085630

G20.TD2201/01.E

70085682

22

G20.TD1202/01.E

70085632

G20.TD2202/01.E

70085689

43

G20.TD1203/01.E

70085635

G20.TD2203/01.E

70085690

64G20.TD1204/01.E

70071700

G20.TD2204/01.E

70071704

85G20.TD1205/01.E

70085637

G20.TD2205/01.E

70085695

106

G20.TD1206/01.E

70071702

G20.TD2206/01.E

70085699

12Art. no.

Stages3Contacts in series

max. 750 V

Pole

Art. no.
Name

Name

1

G20.TD1301/01.E

70085642

G20.TD2301/01.E

70085701

32

G20.TD1302/01.E

70085646

G20.TD2302/01.E

70070071

63G20.TD1303/01.E

70085648

G20.TD2303/01.E

70070066

94

G20.TD1304/01.E

70085650

G20.TD2304/01.E

70085705

121G20.TD1351/01.E

70085653

G20.TD2351/01.E

70085707

32

G20.TD1352/01.E

70085658

G20.TD2352/01.E

70085713

63

G20.TD1353/01.E

70085660

G20.TD2353/01.E

70085716

94

G20.TD1354/01.E

70085662

G20.TD2354/01.E

70085718

12

Art. no.

Stages4

4Contacts in series

max. 1000 V

6Pole

Art. no.
Name

Name

1

G20.TD1401/01.E

70071703

G20.TD2401/01.E

70085720

2

G20.TD1402/01.E

70085666

G20.TD2402/01.E

70085722

8

3

G20.TD1403/01.E

70085668

G20.TD2403/01.E

70071708

12< Back to the table of contents >2

Contacts in series

RatedUtilization
Category

Contacts in seriesPermissible Voltage

Rated Operational
Current le/A G20

123424487296204896

144

192

1260

120

180

240

5110220330

440

3160

320

480

640

2250

500

750

1000

1DC-23 A< to the dimensions >1Pole

Art. no.
Name

Art. no.

StagesName

1

G20.TD1101/04.FT270071697

G20.TD2101/04.FT270085670

12G20.TD1102/04.FT270071698

G20.TD2102/04.FT270020764

2

3

G20.TD1103/04.FT270049666

G20.TD2103/04.FT270085672

34G20.TD1104/04.FT270071699

G20.TD2104/04.FT270085674

45G20.TD1105/04.FT270085627

G20.TD2105/04.FT270085680

56G20.TD1106/04.FT270085629

G20.TD2106/04.FT270080113

6Art. no.

StagesContacts in series

max. 250 V

Pre-configured Main Switches G20

PRE-CONFIGURED MAIN SWITCHES G202

< Back to the table of contents >PoleArt. no.
Name

Name

1

G20.TD1201/04.FT270085631

G20.TD2201/04.FT270085684

22

G20.TD1202/04.FT270085633

G20.TD2202/04.FT270033916

43G20.TD1203/04.FT270085636

G20.TD2203/04.FT270085693

64

G20.TD1204/04.FT270071701

G20.TD2204/04.FT270071705

85G20.TD1205/04.FT270085639

G20.TD2205/04.FT270085698

106G20.TD1206/04.FT270085640

G20.TD2206/04.FT270085700

12Art. no.

StagesContacts in series

max. 500 V

48 x 48 mm

3Pole

Art. no.
Name

Name

1G20.TD1301/04.FT270085645

G20.TD2301/04.FT270085702

32G20.TD1302/04.FT270085647

G20.TD2302/04.FT270085703

63

G20.TD1303/04.FT270085649

G20.TD2303/04.FT270085704

94G20.TD1304/04.FT270085651G20.TD2304/04.FT270085706

121

G20.TD1351/04.FT270085655

G20.TD2351/04.FT270085708

32G20.TD1352/04.FT270085659

G20.TD2352/04.FT270085714

63G20.TD1353/04.FT270085661

G20.TD2353/04.FT270085717

94

G20.TD1354/04.FT270085663

G20.TD2354/04.FT270085719

12Art. no.

Stages4

Contacts in series

max. 750 V

4Pole

Art. no.
Name

Name

1

G20.TD1401/04.FT270085665

G20.TD2401/04.FT270085721

2

G20.TD1402/04.FT270085667

G20.TD2402/04.FT27007170683G20.TD1403/04.FT270046249

G20.TD2403/04.FT270085723

12

Contacts in series

max. 1000 V

7

Pre-configured Main Switches G20

PRE-CONFIGURED MAIN SWITCHES G20
RatedUtilization
Category

Contacts in series
Permissible Voltage
12DC-23 A

2448

2048

96

1260

120

5110

220

3160

320

2250

500

1

Rated Operational
Current le/A G20< to the dimensions >1

Contacts in series

max. 250 V

Height: 90 mm

2

Contacts in series

Art. no.
Name

Art. no.
Name2G20.TD1102/33.KS51V

70024002

G20.TD2102/33.KS51V

70023740

3G20.TD1103/33.KS51V

70085624

G20.TD2103/33.KS51V

70009481

Pole

Art. no.
Name1

G20.TD1201/33.KS51V

Art. no.
Name70087829

G20.TD2201/33.KS51V

70087832< Back to the table of contents >max. 500 V

Pole8

Four Hole Panel Mounting – lockable handle disk 8-15

max. 411541,257

G20 E

Dimensions

DIMENSIONS PRE-CONFIGURED MAIN SWITCHES G2036L

37,548LStages

123456789101112mm

4253

6475

8697108

119130141152

163

Single Hole Mouting – handle with lock bar
+0.20711541,2+0.40max.6

24,122,3 +0.40L

45,837,548

LStages123456789101112mm

59,870,881,892,8103,8114,8125,8136,8147,8

158,8169,8180,8Enclosure

G20 KS51VB

H

17

Ø 64

9,2

A

< Back to the table of contents >3,2

G20 FT2

Ø D2

Ø D1mm

AB

D1

D2

H

12186

M20/M25

M2090

9

Four Hole Panel Mounting

G20S/G20 FT16

max. 511751241,2

Ø 36

16,2+0.2
0Dimensions

DIMENSIONS G20S/G20+0.2027

L5,937,548

36

G20SLmm

12345678910111263,874,885,896,8107,8118,8129,8140,8151,8162,8173,8184,81234567891011

1246,557,568,579,590,5101,5112,5123,5134,5145,5156,5167,5G20

LStagesmm

Single Hole Mounting+0.20max.6

751141,224,1+0.4
03,2G20S/G20 FT222,3 +0.40
L37,548

G20S

LStages1234

56789101112mm

77,388,399,3110,3121,3132,3143,3154,3165,3176,3187,3198,3Stages

12345678910

1112mm

59,870,881,892,8103,8114,8125,8136,8147,8158,8169,8180,8G20

L

10< Back to the table of contents >StagesFour Hole Panel Mounting
8-15

G20S/G20 E

max. 411541,2

5

7

Dimensions

DIMENSIONS G20S/G20

36

L

37,548

G20S

LStages

1

2

3

4

5

6

7

89

10

1112mm

59,370,381,392,3103,3114,3125,3136,3147,3158,3169,3180,3Stages

123456789101112mm

4253

6475

8697108119130141

152

163

G20Base Mounting – Four Hole Mounting

G20S/G20 VE

max.10,5

11 7

2,541,2

58-15

36
64

7,5L37,5
Ø 4,1< Back to the table of contents >

L

48

G20S

LStages

1

2

3

4

5

6

7

8

9

10

1112mm

62

73

84

95

106

117

128

139

150

161

172

183

12

3

4

5

6

7

8

9

10

11

1244,555,566,577,588,599,5110,5121,5

132,5143,5154,5165,5G20

LStagesmm

11

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