WAGO 281-905 2-conductor through terminal block; 4 mm²; center marking; for DIN-rail 35 x 15 and 35 x 7.5; CAGE CLAMP; 4,00 mm²; black

WAGO 3-conductor ground terminal block; 1.5 mm²; center marking; for DIN-rail 35 x 15 and 35 x 7.5; CAGE CLAMP; 1,50 mm²; green-yellow 279-687
Product Name : WAGO 281-905 2-conductor through terminal block; 4 mm²; center marking; for DIN-rail 35 x 15 and 35 x 7.5; CAGE CLAMP; 4,00 mm²; black
Directions

Ratings per IEC/EN

Ratings per IEC/EN 60947-7-1

Nominal voltage (III/3) 800V

Rated surge voltage (III/3) 8kV

Rated current 32A

Legend (ratings) (III / 3) ≙ Overvoltage category III / Pollution degree 3

Connection data

Total number of connection points 2

Total number of potentials 1

Number of levels 1

Connection 1

Connection technology CAGE CLAMP®

Actuation type Operating tool

Connectable conductor materials Copper

Aluminum

Note on connectable conductor materials 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, aluminum conductors must first be cleaned with a blade and then immediately be inserted into the clamping units filled with “Alu-Plus” Contact Paste.


For spring clamp connections with PUSH WIRE® connection technology, WAGO recommends that the aluminum conductor first be cleaned and then immediately inserted into the clamping unit filled with “Alu-Plus” contact paste.


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


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

2.5 mm² = 16 A

4 mm² = 22 A

Solid conductor 0.08 … 4 mm² / 28 … 12 AWG


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