The AMERICAN ZETTLER part AZ2280-1A-120AEF is a high-quality mini power relay designed to handle up to 40AMP of current. It features a 120VAC coil, making it compatible with standard electrical systems. This SPST-NO relay is single-pole, single-throw normally open, allowing for a reliable and efficient connection. It is perfect for a variety of applications that require a strong and dependable relay, such as industrial control panels, home automation systems, and HVAC equipment.