Abstract: An arc-quenching composition that is suitable for deionizing and extinguishing a high-voltage electrical arc comprises an arc-extinguishing material, such as melamine, and a binder, the binder including a thermoplastic polymer polymerized from a carboxylic acid moiety-containing monomer either as a homopolymer or as a copolymer with another monomer, preferably ethylene acrylic acid. The composition comprises effective amounts by weight of the arc-extinguishing material and the thermoplastic polymer to achieve the desired combination of arc-extinguishing properties and structural characteristics, such as tensile strength, elongation, and environmental resistance to thermal cycling. Additionally, the composition for various application and uses may include additives, fillers or fibrous materials. The composition is achieved by compounding of the powdered constituents using dry blending, roll mill, extrusion and/or other plastic compounding techniques to obtain a molding resin.