Wago 281-992 Data Sheet

Data sheet | Item number:281-992
2-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 4mm²/12AWG if WAGO “Alu-Plus” Contact Paste is used for termination.
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Data sheet | Item number:281-992
“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

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 … 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
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Data sheet | Item number:281-992
Mechanical data
Design horizontal
Type of mounting DIN-35 rail
Marking level Center marking

Material Data

Color light gray
Insulating material Polyamide 66 (PA 66)
Fire load 0.141 MJ
Weight 7.804g

Commercial data

Country of origin DE
GTIN 4044918485180
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
KEMA/KEUR
DEKRA Certification B.V.
EN 60947 71-
107288
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