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Arc Flash Energy
An arc ﬂash is a sustained spark (arc-over) between conductors. This is often accompanied by vast amounts of energy
and therefore manifests as an explosion. During this explosion, temperatures in excess of 19,000 degrees Celsius may
arise, accompanied ﬂying (molten) material, a deafening blast due to the pressure wave, and an intensely bright light
which can lead to burns and (temporary) blindness.
Limiting the arc flash energy can be the difference between life and death in an accident. This whitepaper explains what "arc flash energy" is and how it can be minimized. It also discusses why selectivity does not automatically lead to an arc-safe installation.