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The paper gives a phenomenological description of the whole arcing process which takes place in high rupturing capacity HRC fuses with a single notched fuse-element, but in particular the fuse-element burn-back and arc-channel physics. All considerations are based upon existing literature and the authors' extensive short-circuit experiments in the range 3-30 kA (RMS), 550 V, 50 Hz. Three stages are considered: arc-ignition, arc-burning, post-arc recovery withstand.

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