KRA-2A-24 is a type of mechanical relay commonly used in machines and industrial equipment. It is composed of a metallic frame, contacts, coils, and an armature. It is designed to provide switching of electrical circuits within machines. The KRA-2A-24 operates on a 24VAC input and has a 10A contact rating. The contact configurations are normally open (NO) and normally closed (NC). When the relay is energized, the armature is attracted to the coil, closing the contact and completing the circuit. When the armature is no longer energized, it is released and the contact is opened. The KRA-2A-24 can be used in various applications such as controlling motor circuits, turning on lights, changes in direction of motors, and many other switching functions.