Fuses and Electrical Protection Symbols

Fuses are devices containing a small piece of special wire that melts when the intensity of the current flowing through it for a certain period of time exceeds a set value, thus protecting the rest of the electrical circuit overloads.

Symbology of Fuses and Electrical Protection

Symbol Description Symbol Description
Fuse symbol Fuse, IEEE / ANSI system
Generic symbol
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  Circuit Breaker / Fuse symbol Circuit Breaker
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Fuse symbol Fuse   Circuit breaker threaded symbol Circuit breaker threaded
Fuse symbol Fuse   Circuit Breaker unipolar symbol Circuit Breaker unipolar
Fuse symbol Fuse - IEC system   Circuit Breaker bipolar symbol Circuit Breaker bipolar
Fuse symbol Fuse, IEEE / ANSI system   Circuit breaker three poles symbol Circuit breaker three poles
Fuse symbol Fuse   Circuit Breaker cartridge symbol Circuit Breaker cartridge
Fuse slow operation symbol Fuse slow operation
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  Circuit breaker isolator symbol Circuit breaker isolator
Fuse fast operation symbol Fuse fast operation   Circuit breaker isolator horns symbol Circuit breaker isolator horns
Resistor protection symbol Protection resistor   Symbol of the fuse oil for high voltages Fuse oil for high voltages
Resistor protection symbol Protection resistor   Symbol of the fuse oil for high voltages Fuse oil for high voltages
Thermal cutoff fuse symbol Thermal fuse
Thermal cutoff
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  Fuse switch symbol Fuse switch
Switch with built-in fuse
Disconnector / Isolator switch symbol Disconnector
Isolator switch
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  Disconnector Isolator switch contactor symbol Disconnector
Fuse switch (load-break)
Fuse with striker symbol Fuse with striker   Fuse with alarm contact symbol Fuse with alarm contact
Fuse with alarm contact symbol Fuse with alarm contact   Fuse with separate alarm contact symbol Fuse with separate alarm contact
Fuses 3 linked symbol Fuses 3 linked together with automatic release of the striker one   Symbol of the wide side is the side of the network that is active upon merge The wide side is the side of the network that is active upon merge

Other Symbols of Electrical Protection Devices

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Circuit breaker symbol Circuit breaker
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  Circuit breaker symbol Circuit breaker
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Circuit breaker symbol, non drawout Circuit breaker
Molde case, non drawout
  Circuit breaker symbol, non drawout Circuit breaker - ANSI System
Non drawout
Circuit breaker symbol Circuit breaker
Molde case, drawout
  Circuit breaker symbol Circuit breaker
Drawout
Thermal switch symbols Thermal switch
Overload thermal
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  Electric spark / igniter for cord delimiter symbol Electric spark gap / Protective gap
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Surge Arrester / Gas discharge tube symbol Surge Arrester
Gas discharge tube
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  Electric spark gap / igniter for cord delimiter symbol Electric spark gap
Double Electric spark symbol Double Electric spark gap   Electric spark gap / igniter for cord delimiter symbol Electric spark gap
Lightning arrester symbol Lightning arrester
Surge protection / surge diverter
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  Lightning arrester symbol Lightning arrester
Surge Protection / surge diverter
Telephone line protector symbol Telephone line protector   lightning rod symbol Lightning rod
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Delay symbol Delay   Network protector symbol Network protector
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Thermostat symbol Thermostat
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  Thermal switch symbol Thermal switch
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Picture gallery of fuses and electrical protection
Symbols of sensors and detectors
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