Schneider Electric RSB1A120JD This Harmony RSB interfacing plug-in relay has a control coil voltage of 12V DC and has 1 changeover contact single pole double throw with a rating of 12A. It helps to reduce the size of enclosures and increases machine reliability, you can mount nearly everywhere. Plug in type allows easy installation and maintenance. The product is IP40 and has a transparent cover allowing operator to visually inspect the status of contacts. 0 0 0 0 0 0 0 0 0 0 0 0 A complete range of electromechanical relays including interface, miniature, and power relays from 1 CO to 4 CO contacts, up to 30 A.