10 Stud Terminal Block (1 Per Quantity) Premium stud-type terminal blocks are rated at 30 amps 300V UL of 30 amp 600 volts CSA. Studs are on 5/8" centers. Available in lengths of 4 to 14 gangs. The studs are directly molded into the base enabling them to withstand 25 inch-pound of torque for a solid tight fit.