Fuses & Circuit Breakers

Although they work in different ways, fuses and circuit breakers broadly have the same purpose; to protect electrical appliances and electrical circuits from short circuits, and excessive current (called overcurrent or overload).

Fuses

Fuses are relatively low cost electrical safety devices. If too much current enters the circuit, the fuse will burn out (sometimes called blowing out). When the fuse blows out it breaks the circuit. This protects the attached devices and allows you to touch devices without being electrocuted. When the fuse blows, it must be replaced before using the device or appliance again.

Circuit breakers

Circuit breakers work in a similar way to fuses, but they are resettable. Once a fault is detected (this is typically a short circuit or an excessive amount of current flowing through the circuit) the circuit breaker will interrupt the flow of current. When the circuit breaker trips, it's simply a case of flicking a switch to reset the circuit breaker. As soon as you've reset the circuit breaker, it is ready to use again.

Circuit Breakers
Circuit Breakers
Earth & Lightning Protection
Earth & Lightning Protection
Fuse Holders & Accessories
Fuse Holders & Accessories
Fuses
Fuses
Fuses - PCB
Fuses - PCB

50690 Products showing for Fuses & Circuit Breakers

10 of 999+
  • RS stock no. 188-1754
  • Mfr. Part No. T2C4011KIT
Each
R 1,397.58(exc. VAT)
  • RS stock no. 563-431
Each (In a Pack of 10)
R 1.264(exc. VAT)
  • RS stock no. 668-6007
Each (In a Pack of 10)
R 1.861(exc. VAT)
  • RS stock no. 181-8933
  • Mfr. Part No. 6D27Q
Each
R 52.75(exc. VAT)
Better World
  • RS stock no. 776-3442
  • Mfr. Part No. A9F77106
Each
R 272.22(exc. VAT)
  • RS stock no. 211-0187
  • Mfr. Part No. 5SD7443-1
Each
R 21,543.53(exc. VAT)
  • RS stock no. 563-740
Each (In a Pack of 10)
R 4.689(exc. VAT)
  • RS stock no. 501-871
Each
R 132.84(exc. VAT)
  • RS stock no. 563-677
Each (In a Pack of 10)
R 6.648(exc. VAT)
  • RS stock no. 703-8715
  • Mfr. Part No. 250NHG1B
Each
R 236.55(exc. VAT)
Better World
  • RS stock no. 254-6353
  • Mfr. Part No. C25F32D250
Each
R 39,224.62(exc. VAT)
  • RS stock no. 738-3181
  • Mfr. Part No. 0KLK.500T
Each
R 803.75(exc. VAT)
  • RS stock no. 211-6074
  • Mfr. Part No. 8GB1371-1
Each
R 1,220.52(exc. VAT)
  • RS stock no. 233-0568
  • Mfr. Part No. BK14-HTC-613M
Each (In a Pack of 10)
R 195.938(exc. VAT)
  • RS stock no. 202-7180
  • Mfr. Part No. 5SH4363
Each (In a Pack of 20)
R 69.98(exc. VAT)
  • RS stock no. 537-1105
  • Mfr. Part No. S505-4-R
Each (In a Pack of 10)
R 3.93(exc. VAT)
  • RS stock no. 776-1531
  • Mfr. Part No. 093.16.1
Each
R 93.06(exc. VAT)
  • RS stock no. 101-751
Each
R 1,138.02(exc. VAT)
  • RS stock no. 182-1467
  • Mfr. Part No. 400MMT
Each
R 2,688.63(exc. VAT)
  • RS stock no. 232-0141
  • Mfr. Part No. 1SDA060398R1 MOE 220-250VACDC T6
Each
R 34,781.24(exc. VAT)
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