The CY4 is a rugged screw-clamp terminal block designed to deliver dependable, long-lasting electrical connections in demanding installations, featuring a dual-row jumper slot that supports versatile circuit linking and cross-connection. It includes a three-sided marking area to maintain clear identification from multiple viewing angles, and it shares its physical profile with standard feedthrough terminals, allowing the CY10 series to use the same end plates and partition plates for a consistent and orderly DIN-rail layout. The CYG4 is the matching protective-earth terminal designed on the same profile for seamless integration.