Electrical Symbols Reference

Complete visual guide to electrical symbols used in schematics and wiring diagrams. Covers resistors, capacitors, switches, motors, transformers, outlets, and more.

Common electrical schematic and wiring diagram symbols used in circuit design.

Resistor

Opposes current flow

Capacitor

Stores electric charge

Inductor

Stores magnetic energy

Battery

DC voltage source

SPST Switch

Single pole single throw

DPST Switch

Double pole single throw

Fuse

Overcurrent protection

Ground (Signal)

Common reference ground

Earth Ground

Earth grounding connection

Wire Junction

Connected crossing wires

No Connection

Non-connected crossing

Diode

One-way current device

LED

Light emitting diode

Motor

Electric motor

Generator

AC/DC generator

Transformer

Voltage step up/down

AC Outlet (US)

120V duplex receptacle

Light Bulb

Incandescent lamp

Voltmeter

Measures voltage

Ammeter

Measures current

Relay

Electrically controlled switch

Bell

Audible alert device

Buzzer

Electronic buzzer

Symbols based on IEEE/ANSI and IEC 60617 standards. Click individual symbols to use in your designs.

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