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Is it possible to control an arc to glow transition for practical use in DC low voltage electrical installations?

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Figure

Fig. 2. Illustration of voltage current characteristics at contact opening ( tt,tG,tA,tb, tcr- total, glowing, arc discharge, bridge and critical arc time respectively,U0,Ug-supply and glow voltage, Icr, IG-critical arc and glow transition current respecti
Fig. 3. The unstable arc to glow transition when use the fine nickel contacts (250V, 1A, 40ms, open air ≈100kPa) ( tt, tA, tG –total, arcing and glow discharge time respectively, UG, -glow voltage ,IG –arc to glow transformation current value)
Fig.4. It must be noted that the arc to glow transition can be initiated at a current value (I”minimum arcing” value (IG) higher than so called ) for applied contact material [2]
Fig. 7.  Surface structure of a new contact sample (No1) with the lowest (0.6%) content of chromium
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