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.

50914 Products showing for Fuses & Circuit Breakers

291 of 999+
  • RS Stock No. 386-045
  • Mfr. Part No. FU1451/40A
Each
£38.57(exc. VAT)
  • RS Stock No. 211-0183
  • Mfr. Part No. 5SD7414-3
Each
£632.07(exc. VAT)
  • RS Stock No. 220-0596
  • Mfr. Part No. 1492-FB1M30
Each (In a Pack of 12)
£14.94(exc. VAT)
Better World
  • RS Stock No. 254-6285
  • Mfr. Part No. C10F3TM016
Each
£488.38(exc. VAT)
  • RS Stock No. 599-907
  • Mfr. Part No. NFN104
Each
£45.29(exc. VAT)
  • RS Stock No. 174-0704
  • Mfr. Part No. 0251002.MXL
Each (In a Pack of 10)
£0.518(exc. VAT)
  • RS Stock No. 339-635
  • Mfr. Part No. SEA9BPN8E
Each
£282.01(exc. VAT)
  • RS Stock No. 225-6095
  • Mfr. Part No. 2CSF202001R4400 F202 AC-40/0.5
Each
£142.56(exc. VAT)
  • RS Stock No. 611-0226
Each (In a Pack of 10)
£1.599(exc. VAT)
  • RS Stock No. 278-8962
  • Mfr. Part No. 3842519465
Each
£44.44(exc. VAT)
  • RS Stock No. 181-8493
  • Mfr. Part No. NSD32M50
1 Box of 20
£181.68(exc. VAT)
  • RS Stock No. 181-8916
  • Mfr. Part No. SSD25
Each
£2.48(exc. VAT)
  • RS Stock No. 493-399
  • Mfr. Part No. 1361043
Each
£22.13(exc. VAT)
  • RS Stock No. 261-468
  • Mfr. Part No. 6NZ01R
1 Pack of 10
£44.10(exc. VAT)
  • RS Stock No. 136-7811
  • Mfr. Part No. 2CSR255051R1504 DSE201 C50 AC30 - N Blue
Each
£79.53(exc. VAT)
  • RS Stock No. 250-4372
  • Mfr. Part No. 1SCA022660R8700
1 Box of 3
£24.01(exc. VAT)
  • RS Stock No. 173-7959
  • Mfr. Part No. 0090.0001
Each (In a Box of 10)
£17.295(exc. VAT)
  • RS Stock No. 256-886
  • Mfr. Part No. 281690 BC-O-1/8-TW-ECO
Each
£31.97(exc. VAT)
  • RS Stock No. 521-4771
  • Mfr. Part No. 5SJ6510-6KS
Each
£44.56(exc. VAT)
  • RS Stock No. 490-416
  • Mfr. Part No. 236804 PXF-63/4/03-A
Each
£118.10(exc. VAT)
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