Hypertherm plasma torch electrodes for the T AIR torch as used with the Powermax 30 AIR plasma cutter.
This electrode, part number 420132 is one of the most commonly changed parts when using a plasma torch.
The electrode provides power to the plasma arc.
An insert at the tip of the electrode is made from a material with a very high melting point, such as Hafnium.
As the electrode wears, the insert will slowly erode away, forming a small hole in the electrode tip.