Wago 281-998 Data Sheet
Data sheet | Item number:281-998
3-conductor through terminal block; 4 mm²; suitable for Ex e II applications;
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 4mm²/12AWG if WAGO “Alu-Plus” Contact Paste is used for
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Data sheet | Item number:281-998
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:
2.5mm² (14 AWG) = 16 A
4mm² (12 AWG) = 22 A
Data
Electrical data
Rated voltage EN (Ex e II) 550 V
Ratings per IEC/EN 60664-1
Rated current 30 A
Connection data
Connection technology
CAGE CLAMP
®
Actuation type Operating tool
Connectable conductor materials Copper
Aluminum
Solid conductor 0.08 … 4mm²/ 28 … 12AWG
Fine-stranded conductor 0.08 … 4mm²/ 28 … 12AWG
Strip length 9 … 10mm/ 0.35 … 0.39inch
Total number of connection points 3
Total number of potentials 1
Number of levels 1
Type of wiring Front-entry wiring
Geometrical Data
Width 6mm/ 0.236inch
Height from upper-edge of DIN-35 rail 37mm/ 1.457inch
Depth 61.5mm/ 2.421inch
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Data sheet | Item number:281-998
Mechanical data
Design angled
Type of mounting DIN-35 rail
Marking level Center marking
Material Data
Color light gray
Insulating material Polyamide 66 (PA 66)
Fire load 0.185 MJ
Weight 10.218g
Commercial data
Product Group 1 (Rail Mounted Terminal Blocks)
Country of origin DE
GTIN 4044918325400
Customs Tariff No. 85369010000
Approvals / Certificates
Ex-Approvals
Logo Approval Additional Approval Text
Certificate
name
ATEx
Physikalisch Technische Bundesanstalt (PTB)
- PTB 00
ATEX
3110 U (II
2 G EEx e
II)
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
CSA
UL 1059 1505034
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