Common Eletrical Symbols

Fuse:

Fuse

Fuse cut out

Disconnect switch

Disconnect switch

Fused disconnect switch

Circuit breaker

Circuit breaker

Thermal circuit breaker

Magnetic circuit breaker

Thermal magnetic circuit breaker

Resistor

Fixed resistor

Variable resistor

Inductor

Air core

Iron core

Transformer

Air core

Dual voltage

Auto

Iron core

Current

Central tap 

Battery

Battery

Three phase motor

Squirrel cage

Wound rotor

Synchronous

Single phase motor

Squirrel cage

Repulsion

Direct current motor and generators

Armature

Shunt field

Series field

Comm. Field

Capacitor

Non polarized

Polarized

Variable

Ground

Ground

Wiring

Not connected

Connected

Power

Control

Wiring thermal

Wiring thermal

Connections

Mechanical  connections

Mechanical  interlock