Universal plug in relay, Harmony, 10A, 3CO, lockable test button, 24V AC

"This Harmony RUM universal plug-in relay uses cylindrical pins, has a control coil voltage of 24V AC and has 3 changeover contacts triple pole double throw with a rating of 10A." "It provides a complete system solution for the most demanding applications." "It also offers one-step lockable test button." "It helps to reduce the size of enclosures and increase machine reliability, you can mount nearly everywhere." "The product is IP40 and has a transparent cover allowing operator to visually inspect the status of contacts." "Workability for hard-wired logic automated systems to complement the functions of industrial programmable logic controllers (PLCs)."