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.
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