Electrical symbols Study Guide and Test

Normally Open Contacts
Normally Open Contacts

Normally Closed Contacts
Normally Closed Contacts

Selector Switch
Selector Switch

Single Pole Single Throw Switch
Single Pole Single Throw Switch

Single Pole Double Throw Switch
Single Pole Double Throw Switch

Single Pole Double Throw 3 Position Switch
Single Pole Double Throw 3 Position Switch

Double Pole Double Throw Switch
Double Pole Double Throw Switch

Push Button
Normally Open
Single Circuit
Momentary, Spring Return
Push Button
Normally Open
Single Circuit
Momentary, Spring Return

Push Button
Normally Closed
Single Circuit
Momentary, Spring Return
Push Button
Normally Closed
Single Circuit
Momentary, Spring Return

Fixed Resistor
Glow Coil
Strip Heater
Fixed Resistor
Glow Coil
Strip Heater

Variable Resistor
Variable Resistor

Tapped Resistor
Tapped Resistor

Thermistor
Thermistor

Heater type Resistor
Heater type Resistor

Transformer
(variants)
Transformer
(variants)

Capacitor
Capacitor

Coil
(variants)
Coil
(variants)

Fuse
Fuse

Fusible Link
Fusible Link

Ground Connection
Ground Connection

Light
Light

Multiple Conductor Cable
Multiple Conductor Cable

Thermocouple
Thermocouple

Thermal Overload
Thermal Overload

Connectors
Connectors

Electrode
Ignitor
Electrode
Ignitor

Meter
* denotes type
Meter
* denotes type

Variable Inductor
Variable Inductor

Fixed Inductor
Fixed Inductor

Solenoid
Solenoid

Multi Pole Double Throw Switch
Multi Pole Double Throw Switch

Multi Pole Single Throw Switch
Multi Pole Single Throw Switch

Foot Switch
Normally Open
Foot Switch
Normally Open

Foot Switch
Normally Closed
Foot Switch
Normally Closed

Auto Transformer
Auto Transformer

Variable Transformer
Variable Transformer

Transformer - Auto Adjustable Tapped
Transformer – Auto Adjustable Tapped

Fixed Iron Core Coil
Fixed Iron Core Coil

Fixed Air Core Coil
Fixed Air Core Coil

Adjustable Iron Core Coil
Adjustable Iron Core Coil

Adjustable Air Core Coil
Adjustable Air Core Coil

Motor
Single Phase
2 Lead
Motor
Single Phase
2 Lead

Motor
Single Phase
3 Lead
Motor
Single Phase
3 Lead

Motor
3 Phase
3 Lead
Motor
3 Phase
3 Lead

Motor
3 Phase
6 Lead
Dual Windings
Motor
3 Phase
6 Lead
Dual Windings

Microphone
Microphone

Diode
Diode

Headset
Headset

Horn or Siren
Horn or Siren

Buzzer or Bell
Buzzer or Bell

Shielded Cable
Shielded Cable

Capacitor
Capacitor

Diode
Diode

Ground
Ground

Resistor
Resistor

Transistor
Transistor