Power Distribution Block, For Conductor Material Aluminum, Copper, Line Connections/Pole 1, Line Side Stud Size 3/8-16 x 1-7/16 In., Load Connections/Pole 2, Load Side Stud Size 1/4-20 x 9/16 In., Maximum Current - Copper Conductor 310 A, Maximum Voltage 600 V AC/DC, Number of Poles 3, Overall Depth 3.75 in, Overall Length 6.5 in, Overall Width 1.88 in, UL 94 Flammability Rating V-0, Housing Color Black, Housing Material , Line Side Connection Type Stud