. . Description. . . The clamp is designed for particularly heavy-duty conditions. It has an electrical connection of the lower and upper jaws made of copper, the lever insulated with thermosetting plastic. We recommend this chuck for use in shipyards and foundries. The electrode holders are fully insulated and allow manual welding in all positions with convenient electrode clamping in one of three possible positions. The holder is supplied without cable.- current carrying capacity in 60% duty cycle - 500 A . - current carrying capacity in working cycle 35% - 600 A . - diameter of crimped electrodes: 6.3 ÷ 10.0 mm . - cross-section of electric cable: 95 ÷120 mm2 - chuck weight: 650 g