Square D X040V02 AC Control Relay 4NO 0NC Form A

The Square D X040V02 AC Control Relay is a four-form-A (4NO, 0NC) NEMA Type X relay designed for machine-tool and panel-control applications. This X040V02 variant, also listed as 8501XO40V02, uses a 110–120 VAC coil (V02) rated for 50/60 Hz operation, enabling direct integration with standard AC control circuits. It provides four normally open contacts and no normally closed contacts, allowing you to drive up to four separate circuits from a single coil activation. With a resistive-load rating of up to 10 A at 600 VAC, it serves general-purpose switching tasks in equipment such as machine tools, conveyors, and automated control panels. The Type X family is known for robust construction and reliable isolation between control and power circuits, making this relay a common choice for industrial applications requiring multiple open-contact outputs from one coil. Whether used for sequencing, interlock logic, or multi-circuit control, the X040V02 provides a compact, dependable solution for distributed control in industrial panels.