Data sheet | Item number:281-907/999-950
2-conductor ground 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
termination.
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Data sheet | Item number:281-907/999-950
“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
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 2
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 29mm/ 1.142inch
Depth 59mm/ 2.323inch
Mechanical data
Design horizontal
Type of mounting DIN-35 rail
Marking level Center marking
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Data sheet | Item number:281-907/999-950
Material Data
Color green-yellow
Insulating material Polyamide 66 (PA 66)
Fire load 0.127 MJ
Weight 12.644g
Commercial data
Country of origin DE
GTIN 4044918513579
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
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
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