Wago 281-903 Data Sheet

Data sheet | Item number:281-903

2-conductor through terminal block; 4 mm²; center marking; for DIN-rail 35 x
15 and 35 x 7.5; CAGE CLAMP®

Color:

Item description

Note:
Terminating Aluminum Conductors

WAGO spring clamp terminal blocks are suitable for solid aluminum conductors up to 4mm²/12AWG if WAGO “Alu-Plus” Contact Paste is used for
termination.

“Alu-Plus” Contact Paste Advantages:

Automatically destroys the oxide film during clamping.

Prevents fresh oxidation at the clamping point.

Prevents electrolytic corrosion between aluminum and copper conductors (in the same terminal block).

Provides long-term protection against corrosion.

Using terminal blocks with CAGE CLAMP® Spring Pressure Connection Technology, and aluminum conductors must first be cleaned with a blade
then immediately be inserted into the clamping units filled with “Alu-Plus” Contact Paste.

It is also possible to apply WAGO “Alu-Plus” on the whole surface of the aluminum conductor before termination.additionally

Please note that the nominal currents must be adapted to the reduced conductivity of the aluminum conductors:

2.5mm² (14 AWG) = 16 A
4mm² (12 AWG) = 22 A

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Data sheet | Item number:281-903

Data

Electrical data

Ratings per IEC/EN 60664-1

Rated voltage (III / 3) 800 V

Rated impulse voltage (III / 3) 8 kV

Rated current 32 A

Connection data

Connection technology

CAGE CLAMP

®

Actuation type Operating tool

Connectable conductor materials Copper

Aluminum

Solid conductor 0.08 … 4mm²/ 28 … 12AWG

Fine-stranded conductor 0.08 … 4mm²/ 28 … 12AWG

Strip length 9 … 10mm/ 0.35 … 0.39inch

Total number of connection points 2

Total number of potentials 1

Number of levels 1

Type of wiring Front-entry wiring

Geometrical Data

Width 6mm/ 0.236inch

Height from upper-edge of DIN-35 rail 29mm/ 1.142inch

Depth 59mm/ 2.323inch

Mechanical data

Design horizontal

Type of mounting DIN-35 rail

Marking level Center marking

Material Data

Color red

Insulating material Polyamide 66 (PA 66)

Fire load 0.145 MJ

Weight 7.944g

Commercial data

Country of origin DE

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Data sheet | Item number:281-903

GTIN 4044918485098

Customs Tariff No. 85369010000

Approvals / Certificates

Country specific Approvals

Logo Approval Additional Approval Text

Certificate
name

CCA

DEKRA Certification B.V.

EN 60947 NTR NL-

7454/A1

CCA

DEKRA Certification B.V.

IEC 60947 NTR NL-

7454/A1

CSA

DEKRA Certification B.V.

C22.2 No. 158 1505034

KEMA/KEUR

DEKRA Certification B.V.

EN 60947 71-

107288

Ship Approvals

Logo Approval Additional Approval Text

Certificate
name

ABS

American Bureau of Shipping

- 14­HG1293677­PDA

BV

Bureau Veritas S.A.

EN 60947 07436/E0 BV

DNV GL

Det Norske Veritas, Germanischer Lloyd

- TAE00001V2

LR

Lloyds Register

EN 60947 91/20112

(E9)

UL-Approvals

Logo Approval Additional Approval Text

Certificate
name

281-903

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Data sheet | Item number:281-903

UR

Underwriters Laboratories Inc.

UL 1059 E45172

Compatible products

General accessories

Item no.: 249-105

Group marker carrier

249-105

Item no.: 249-147

B-type test plug module; modular

249-147

Item no.: 249-148

B-type spacer module; modular; e.g., for bridging commoned terminal blocks

249-148

Item no.: 280-404

Test plug adapter; 5 mm wide; for test plug 210-137 (2.3 mm Ø); suitable for 1.5 mm² - 4 mm² tbs

280-404

Item no.: 281-407

Test plug; 6 mm wide; Nominal current 24 A; for 0.08 mm² - 2.5 mm²

281-407

Item no.: 281-418
Test plug module; modular; suitable for all WAGO 281, 776, 777 and 781 series rail-mounted terminal
blocks with jumper slots in the current bar

281-418

Item no.: 281-419
Spacer module; modular; bridging commoned terminal blocks

281-419

check

Item no.: 209-170
Test plug adapter; 8.3 mm wide; for 4 mm Ø test plugs; suitable for 1.5 mm² - 10 mm² tbs

209-170

Protective Warning Marker

Item no.: 281-415
Protective warning marker; with high-voltage symbol, black; for 5 terminal blocks

281-415

Insulation stop

Item no.: 281-470
Insulation stop; 0.08 - 0.2 mm² "s" (0.14 mm² "f-st"); 5 pieces/strip

281-470

Item no.: 281-471
Insulation stop; 0.25 - 0.5 mm²; 5 pieces/strip

281-471

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Data sheet | Item number:281-903

Item no.: 281-472
Insulation stop; 0.75 - 1.5 mm²; 5 pieces/strip

281-472

ferrule

Item no.: 216-106
Ferrule; Sleeve for 2.5 mm² / AWG 14; uninsulated; electro-tin plated

216-106

Item no.: 216-201
Ferrule; Sleeve for 0.5 mm² / 20 AWG; insulated; electro-tin plated

216-201

Item no.: 216-202
Ferrule; Sleeve for 0.75 mm² / 18 AWG; insulated; electro-tin plated

216-202

Item no.: 216-203
Ferrule; Sleeve for 1 mm² / AWG 18; insulated; electro-tin plated

216-203

Item no.: 216-204
Ferrule; Sleeve for 1.5 mm² / AWG 16; insulated; electro-tin plated

216-204

Item no.: 216-205
Ferrule; Sleeve for 2.08 mm² / AWG 14; insulated; electro-tin plated

216-205

Item no.: 216-206
Ferrule; Sleeve for 2.5 mm² / AWG 14; insulated; electro-tin plated

216-206

Item no.: 216-241
Ferrule; Sleeve for 0.5 mm² / 20 AWG; insulated; electro-tin plated; electrolytic copper; gastight
crimped; acc. to DIN 46228, Part 4/09.90

216-241

Item no.: 216-242
Ferrule; Sleeve for 0.75 mm² / 18 AWG; insulated; electro-tin plated; electrolytic copper; gastight
crimped; acc. to DIN 46228, Part 4/09.90

216-242

Item no.: 216-243
Ferrule; Sleeve for 1 mm² / AWG 18; insulated; electro-tin plated; electrolytic copper; gastight
crimped; acc. to DIN 46228, Part 4/09.90

216-243

Item no.: 216-244
Ferrule; Sleeve for 1.5 mm² / AWG 16; insulated; electro-tin plated; electrolytic copper; gastight
crimped; acc. to DIN 46228, Part 4/09.90

216-244

Item no.: 216-246
Ferrule; Sleeve for 2.5 mm² / AWG 14; insulated; electro-tin plated; electrolytic copper; gastight
crimped; acc. to DIN 46228, Part 4/09.90

216-246

Item no.: 216-301
Ferrule; Sleeve for 0.25 mm² / AWG 24; insulated; electro-tin plated

216-301

Item no.: 216-302
Ferrule; Sleeve for 0.34 mm² / 22 AWG; insulated; electro-tin plated

216-302

Jumper

Item no.: 210-103
Wire commoning chain; insulated; 50 connections

210-103

Item no.: 210-123
Wire commoning chain; insulated; 50 connections

210-123

Item no.: 249-123
Push-in type wire jumper; insulated; wire length 180 mm; Conductor cross section 0.75 mm²

249-123

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Data sheet | Item number:281-903

Item no.: 249-125
Push-in type wire jumper; insulated; wire length 60 mm; Conductor cross section 0.75 mm²

249-125

Item no.: 249-126
Push-in type wire jumper; insulated; wire length 110 mm; Conductor cross section 0.75 mm²

249-126

Item no.: 249-127
Push-in type wire jumper; insulated; wire length 250 mm; Conductor cross section 0.75 mm²

249-127

Item no.: 281-402
Adjacent jumper; insulated; IN = IN terminal block

281-402

Item no.: 281-409
Alternate jumper; insulated; IN = IN terminal block

281-409

Item no.: 281-422
Adjacent jumper; insulated; IN = IN terminal block

281-422

Item no.: 281-482
Comb-style jumper bar; insulated; 2-way; IN = IN terminal block

281-482

Item no.: 281-483
Comb-style jumper bar; insulated; 3-way; IN = IN terminal block

281-483

Item no.: 281-485
Comb-style jumper bar; insulated; 5-way; IN = IN terminal block

281-485

Item no.: 281-490
Comb-style jumper bar; insulated; 10-way; IN = IN terminal block

281-490

Item no.: 281-492
Alternate comb-style jumper bar; insulated; 2-way; IN = IN terminal block

281-492

Item no.: 283-414
Step-down jumper; insulated; from 16 mm² to 4 mm²; Nominal current 32 A

283-414

Item no.: 284-413
Step-down jumper; insulated; from 10/6 mm² to 6/4 mm²; Nominal current 30 A

284-413

Item no.: 284-414
Step-down jumper; insulated; from 10/6 mm² to 4/2.5/1.5 mm²; Nominal current 15 A

284-414

Item no.: 709-110
Wire commoning chain; insulated; 4 connections; 3 x 110 mm

709-110

Item no.: 709-111
Wire commoning chain; insulated; 3 connections; 2 x 120 mm

709-111

Item no.: 709-112
Wire commoning chain; insulated; 3 connections; 2 x 170 mm

709-112

Item no.: 781-452
Staggered jumper; insulated; from 1 to 2; Spacing: 6 mm

781-452

Item no.: 781-453
Staggered jumper; insulated; from 1 to 3; Spacing: 6 mm

781-453

Item no.: 781-454
Staggered jumper; insulated; from 1 to 4; Spacing: 6 mm

781-454

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Data sheet | Item number:281-903

Item no.: 781-455
Staggered jumper; insulated; from 1 to 5; Spacing: 6 mm

781-455

Item no.: 781-456
Staggered jumper; insulated; from 1 to 6; Spacing: 6 mm

781-456

Carrier rail

Item no.: 210-112
Steel carrier rail; 35 x 7.5 mm; 1 mm thick; 2 m long; slotted; according to EN 60715; "Hole width 25
mm

210-112

Item no.: 210-113
Steel carrier rail; 35 x 7.5 mm; 1 mm thick; 2 m long; unslotted; according to EN 60715

210-113

Item no.: 210-114
Steel carrier rail; 35 x 15 mm; 1.5 mm thick; 2 m long; unslotted; similar to EN 60715

210-114

Item no.: 210-115
Steel carrier rail; 35 x 7.5 mm; 1 mm thick; 2 m long; slotted; according to EN 60715; "Hole width 18
mm

210-115

Item no.: 210-118
Steel carrier rail; 35 x 15 mm; 2.3 mm thick; 2 m long; unslotted; according to EN 60715

210-118

Item no.: 210-196
Aluminum carrier rail; 35 x 8.2 mm; 1.6 mm thick; 2 m long; unslotted; similar to EN 60715

210-196

Item no.: 210-197
Steel carrier rail; 35 x 15 mm; 1.5 mm thick; 2 m long; slotted; similar to EN 60715

210-197

Item no.: 210-198
Copper carrier rail; 35 x 15 mm; 2.3 mm thick; 2 m long; unslotted; according to EN 60715

210-198

Item no.: 210-504
Steel carrier rail; 35 x 7.5 mm; 1 mm thick; 2 m long; slotted; galvanized; according to EN 60715

210-504

Item no.: 210-505
Steel carrier rail; 35 x 7.5 mm; 1 mm thick; 2 m long; unslotted; galvanized; according to EN 60715

210-505

Item no.: 210-506
Steel carrier rail; 35 x 15 mm; 1.5 mm thick; 2 m long; unslotted; galvanized; similar to EN 60715

210-506

Item no.: 210-508
Steel carrier rail; 35 x 15 mm; 1.5 mm thick; 2 m long; slotted; galvanized; similar to EN 60715

210-508

End plate

Item no.: 281-328
End and intermediate plate; 2.5 mm thick

281-328

Item no.: 281-329
End and intermediate plate; 2.5 mm thick

281-329

Item no.: 281-330
Separator plate; 2 mm thick; oversized

281-330

Item no.: 281-331
Separator plate; 2 mm thick; oversized

281-331

Item no.: 284-334
Step-down cover plate; 1 mm thick; for 2-, 3- and 4-conductor terminal blocks

284-334

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Data sheet | Item number:281-903

Item no.: 284-344
Step-down cover plate; 1 mm thick; for 2-, 3- and 4-conductor terminal blocks

284-344

assembling

Item no.: 209-106
Mounting carrier; for isolated mounting on DIN 35 rails

209-106

Item no.: 709-153
Cover; Type 1; suitable for cover carrier, type 1; 1 m long

709-153

tools

Item no.: 210-657
Operating tool with partially insulated shaft; Blade (3.5 x 0.5) mm; short

210-657

Item no.: 210-658
Operating tool with partially insulated shaft; Blade (3.5 x 0.5) mm; short; angled

210-658

Item no.: 210-720
Operating tool with partially insulated shaft; Type 2, blade (3.5 x 0.5) mm

210-720

Marking accessories

Item no.: 2009-115

WMB-Inline; for Smart Printer; on reel; stretchable 5 - 5.2 mm; plain; snap-on type

2009-115

Item no.: 2009-115/000-002

WMB-Inline; for Smart Printer; on reel; stretchable 5 - 5.2 mm; plain; snap-on type

2009-115

/000-002

Item no.: 2009-115/000-006

WMB-Inline; for smartPRINTER; on reel; stretchable 5 - 5.2 mm; plain; snap-on type

2009-115

/000-006

Item no.: 2009-115/000-007

WMB-Inline; for Smart Printer; on reel; stretchable 5 - 5.2 mm; plain; snap-on type

2009-115

/000-007

Item no.: 2009-115/000-012

WMB-Inline; for smartPRINTER; on reel; stretchable 5 - 5.2 mm; plain; snap-on type

2009-115

/000-012

Item no.: 2009-115/000-017

WMB-Inline; for Smart Printer; on reel; stretchable 5 - 5.2 mm; plain; snap-on type

2009-115

/000-017

Item no.: 2009-115/000-023

WMB-Inline; for Smart Printer; on reel; stretchable 5 - 5.2 mm; plain; snap-on type

2009-115

/000-023

Item no.: 2009-115/000-024

WMB-Inline; for smartPRINTER; on reel; stretchable 5 - 5.2 mm; plain; snap-on type

2009-115

/000-024

Item no.: 209-140
Group marker carrier

209-140

Item no.: 209-141
Group marker carrier

209-141

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Data sheet | Item number:281-903

Item no.: 209-142
Group marker carrier

209-142

Item no.: 209-185
Adaptor

209-185

Item no.: 793-501
WMB marking card; as card; not stretchable; plain; snap-on type

793-501

Item no.: 793-501/000-002

WMB marking card; as card; not stretchable; plain; snap-on type

793-501

/000-002

Item no.: 793-501/000-005

WMB marking card; as card; not stretchable; plain; snap-on type

793-501

/000-005

Item no.: 793-501/000-006

WMB marking card; as card; not stretchable; plain; snap-on type

793-501

/000-006

Item no.: 793-501/000-007

WMB marking card; as card; not stretchable; plain; snap-on type

793-501

/000-007

Item no.: 793-501/000-012

WMB marking card; as card; not stretchable; plain; snap-on type

793-501

/000-012

Item no.: 793-501/000-017

WMB marking card; as card; not stretchable; plain; snap-on type

793-501

/000-017

Item no.: 793-501/000-023

WMB marking card; as card; not stretchable; plain; snap-on type

793-501

/000-023

Item no.: 793-501/000-024

WMB marking card; as card; not stretchable; plain; snap-on type

793-501

/000-024

Item no.: 793-5501
WMB marking card; as card; for terminal block width 5 - 17.5 mm; stretchable 5 - 5.2 mm; plain; snap­on type

793-5501

Item no.: 793-5501/000-002
WMB marking card; as card; for terminal block width 5 - 17.5 mm; stretchable 5 - 5.2 mm; plain; snap­on type

793-5501

/000-002

Item no.: 793-5501/000-005
WMB marking card; as card; stretchable 5 - 5.2 mm; plain; snap-on type

793-5501

/000-005

Item no.: 793-5501/000-006
WMB marking card; as card; stretchable 5 - 5.2 mm; plain; snap-on type

793-5501

/000-006

Item no.: 793-5501/000-007
WMB marking card; as card; stretchable 5 - 5.2 mm; plain; snap-on type

793-5501

/000-007

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Data sheet | Item number:281-903

WMB marking card; as card; stretchable 5 - 5.2 mm; plain; snap-on type /000-007

Item no.: 793-5501/000-012
WMB marking card; as card; stretchable 5 - 5.2 mm; plain; snap-on type

793-5501

/000-012

Item no.: 793-5501/000-017
WMB marking card; as card; stretchable 5 - 5.2 mm; plain; snap-on type

793-5501

/000-017

Item no.: 793-5501/000-023
WMB marking card; as card; stretchable 5 - 5.2 mm; plain; snap-on type

793-5501

/000-023

Item no.: 793-5501/000-024
WMB marking card; as card; stretchable 5 - 5.2 mm; plain; snap-on type

793-5501

/000-024

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Bid Text

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