2506 Terminal Block 30AMP - 6 Circuit. Features:. Closed back design completely insulates power from the mounting surface. Each screw pair is 1 isolated circuit. Jumpers allow creation of common circuits. WARNING: This product can expose you to chemicals including di(2-ethylhexyl)phthalate (dehp) which is known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.