Relay Symbols and Electromagnets

The relay / electromagnetic switching devices controls are activated by signals. Most of the time, a small voltage or current is used to switch other voltages or higher currents may be electromechanical or fully electronic type.

Symbology of Relays and Electromagnets

Symbol Description Symbol Description
Relay symbol / solenoid operated Relay / solenoid operated
Coil and Switch
Generic symbol
  Relay symbol / solenoid operated Relay / solenoid operated
Relay symbol / solenoid operated Relay / solenoid operated   Relay symbol with push button Relay / solenoid operated
Coil and pushbutton
Relay (Coil) symbol Relay (Coil)
Generic symbol
  Relay (Coil) symbol Relay (Coil)
Generic symbol
Relay symbol Relay   Double coil relay symbol Double coil relay
Double coil relay symbol Double coil relay   Symbol of relay windings in opposite directions Two operating relay windings in opposite directions
Double coil relay symbol Double coil relay   Overcurrent relay symbol Overcurrent relay
Fast deactivation relay symbol Fast deactivation relay   Differential current relay symbol Differential current relay
Relay slow excitation symbol Relay slow excitation   Slow deactivation relay symbol Slow deactivation relay
Symbol of the high speed relay, both the connection or the disconnection High speed relay, both the connection or the disconnection   Maximum voltage relay symbol Maximum voltage relay
Relay fast symbol Relay fast   Symbol of the defective relay actuated voltage Defective relay actuated voltage
Card operated relay symbol Card operated relay   Relay not affected by AC symbol Relay not affected by AC
Differential relay symbol Differential relay   Polarized relay symbol Polarized relay
Magnetically polarized relay symbol Magnetically polarized relay   Delayed action relay to disconnect symbol Delayed action relay to disconnect
Electromagnetic relay symbol Electromagnetic relay   Thermal relay symbol Thermo-relay
Thermal relay
Electronic relay symbol Electronic relay   Stepping relay symbol Stepping relay or pulse
Symbols of relay remote control Relay remote control   Pulse relay symbol Pulse relay
Remanence relay symbol Remanence relay   Intermittent relay symbol Intermittent relay
Relay remnant symbol Relay remnant   Electrovalve symbol Electrovalve
AC relay symbol AC relay   Relay rest with delayed operation symbol Relay rest with delayed operation
Relay mechanical resonance symbol Relay mechanical resonance
e.g. 25Hz
  Step relay symbol Step relay
Mechanical interlock relay
Reed relay symbol Reed relay      

Measuring Relays Symbols

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Maximum voltage relay symbol Maximum voltage relay   Undervoltage relay symbol Undervoltage relay
Low impedance relay symbol Low impedance relay   Absence of voltage relay symbol Absence of voltage relay
Detection relay conductive divided symbol Detection relay conductive divided   Relay low power symbol Relay low power
Symbol of the detector relay shorting between coils Detector relay shorting between coils   Reverse current relay symbol Reverse current relay
Relay failure detector in tri-phasic lines symbol Relay failure detector in tri-phasic lines   Relay maximum and minimum current symbol Relay maximum and minimum current
Relay blocked rotor symbol Relay blocked rotor   Frequency relay symbol Frequency relay
Automatic reclosing relay symbol Automatic reclosing relay   Symbol of the overcurrent relay with two measuring elements and a range of sample Overcurrent relay with two measuring elements and a range of sample
e.g. 1...5A sample range
Overcurrent relay delayed action symbol Overcurrent relay delayed action   Measuring relay symbol Measuring relay
The asterisk sustiuye by letters or symbols related to the relay

Electromagnets Symbols / Electromagnetic Controls

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Electromagnet symbol Electromagnet
Electromagnetic drive
  electromagnet symbol, solenoid operatec Electromagnet
Electromagnet, symbol USA Electromagnet
Electromagnetic drive
US Symbol
  Contact with electromagnetic anchoring mechanism symbol Contact with electromagnetic anchoring mechanism

Symbols of Relay Contacts

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Open contacts symbol Open contacts   Closed contacts symbol Closed contacts
Open contacts symbol Open contacts   Closed contacts symbol Closed contacts
Open contacts symbol Open contacts   Closed contacts symbol Closed contacts
Contacts work symbol Contacts work   Contacts resting symbol Contacts resting
Switching contacts symbol Switching contacts   Switch contacts successive symbol Switch contacts successive
Commutator symbol Commutator   Commutator symbol Commutator
Picture gallery of relays and electromagnets
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