RR3130A is a radial-tipped relay, commonly used for powering devices such as air conditioners, water heaters, and refrigerators. The RR3130A is a three-pin relay with a normally open contact. This means that when the relay is triggered, the contacts will close, enabling the device to be powered. The RR3130A has a maximum voltage rating of 250VAC and can handle a rated load current of 20A. This type of relay is often used in older appliances and home electronics because it is simple to install, easy to use, and relatively inexpensive.