Dielectric Mat

A rubber floor mat manufactured from a specially compounded elastomer with high dielectric strength (electrical insulation capability) to protect workers from electric shock when standing in front of or working on energized electrical panels, switchgear, transformers, and other high-voltage equipment. Classified by maximum working voltage per ASTM D178: Class 0 (1,000 V AC, red or black), Class 1 (7,500 V, white), Class 2 (17,000 V, yellow), Class 3 (26,500 V, green), Class 4 (36,000 V, orange). The mat is proof-tested at 2.5-3x the rated voltage during manufacturing. Material: NR or EPDM compounded without carbon black or other conductive fillers (uses kaolin, silica, CaCO₃ instead). Thickness: 3 mm (Class 0) to 12.5 mm (Class 4). Surface: smooth (standard) or diamond-textured (better traction, especially when wet). Sizes: typically 600×900 mm or 900×1,200 mm individual mats, or continuous rolls 900-1,200 mm wide for switchgear room floors. Per ASTM D178, IEC 61111, and EN 61111. Must be inspected before each use (visual check for cuts, holes, chemical contamination, embedded conductive objects) and electrically re-tested every 6-12 months per OSHA 29 CFR 1910.137 principles. Store flat, away from sunlight and ozone sources. Brands: Hubbell, Greenlee, Cementex, Stanco.