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Symbols of power switching devices

The power switching devices (circuit breakers, contactors, switches and circuit breakers) are responsible for establishing, sustaining and interrupt the electrical current in a circuit, because when the arc can not be done by simple contact.

Symbology / Symbols of power switching devices
Symbol Description   Symbol Description
Static switch symbol Static switch
- Semiconductor -
generic symbol
  Static contactor symbol Static contactor
- Semiconductor -
Contactor open symbol Contactor open   Ruptor symbol, contactor closed Ruptor
Contactor closed
Isolator symbol Isolator   Isolating switch symbol Isolating switch
Isolator with two possible positionsIsolator with two possible positions symbol Isolator with two possible positions   Interrupter switch manual control symbol Interrupter switch manual control
Contactor with automatic disconnection symbol Contactor with automatic disconnection   Secciondor switch with automatic opening symbol Secciondor switch with automatic opening
Static switch symbol Static switch
- Semiconductor -
Allows current flow only anticlockwise
  Static switch symbol Static switch
- Semiconductor -
Allows current flow only in right direction
Switch with built-in fuse symbol Switch with built-in fuse   Fused disconnect switch built symbol Fused disconnect switch built
Contact disconnect switch symbol Contact disconnect switch   Interrupter switch manual control symbol Interrupter switch manual control
Switch manual control with locking device symbol Switch manual control with locking device   Circuit breaker symbol Circuit breaker

Symbols switches, contacts and low-power actuators

Symbol of switches with single line - unifilar representation

Symbols switches for effects or dependencies

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