Type IISR Clear 250 kcmil to 10 Sol Pre-insulated In-line Splicer or Reducer. Manufactured from high strength aluminum alloy. Dual rated for aluminum and copper conductors, 600 V, 90 deg C. Wide conductor range: 500 kcmil - 14 Sol. Allows flexibility in the field and reduces number of connectors in inventory. Suitable for use in cable trays, raceways, ducts and troughs. Pre-filled with oxide inhibitor, prevents oxidation, moisture and contaminants from entering contact area. Supplied with removable access plugs over screw and conductor ports providing protection against contaminants. Pre-insulated at factory with clear high dielectric strength plastisol. Black insulation is UV resistant. Saves time, eliminates taping, reduces overall installation costs. Abrasion and chemical resistant. Will not support combustion.