Relay Symbols and Electromagnets - Electrical Symbols 42 rowsRelay Symbols and Electromagnets. The relay are switching devices activated by signals. Most of the time, a small voltage or current is used to switch other voltages or higher currents that may be electromechanical or fully electronic type.DESCRIPTIONDESCRIPTIONRelay / solenoid operated (Coil and Switch) Generic syRelay / solenoid operatedRelay / solenoid operatedRelay / solenoid operated Coil and pushbuttonRelay (Coil) Generic symbolRelay (Coil) Generic symbolRelayDouble coil relaySee all 42 rows on wwwtrical-symbols Electrical Symbols | Switches and Relays Electrical Symbols — Switches and Relays. Most of the electrical symbols can be changed in their appearance, styles and colors according to users' requirements. Electrical symbols are used to represent various electrical and electronic devices in a schematic diagram of an electrical or electronic circuit. The following table lists some Electrical Relay Diagram and P&ID Symbols From Industrial PDF fileElectrical Relay Diagram and P&ID Symbols. 2 Electrical Relay Diagram Symbols wwwstrialtext 1-800-752-8398 ELECTRICAL RELAY DIAGRAM SYMBOLS SWITCHES Disconnect Circuit Interrupter Limit Neutral Position Circuit Breaker Normally Open Normally Closed Held Closed Held Open Actuated Maintained Position Closed Open Proximity Switch Limit Wiring Diagram Symbols Automotive - bookingritzcarlton The car schematic electrical symbol indicates this relay is just a magnetically controlled switch. On the right, you will observe some of the most frequently encountered car schematic electrical symbols utilized in professional wiring diagrams. The ideal way to understand wiring diagrams is to take a look at some examples of wiring diagrams.