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

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  • RS Stock No. 521-2630
Each (In a Pack of 5)
£9.108(exc. VAT)
  • RS Stock No. 218-8694
  • Mfr. Part No. 1492-SPM1B005
Each (In a Pack of 2)
£20.45(exc. VAT)
  • RS Stock No. 245-9170P
  • Mfr. Part No. MF-LSMF500/16X-2
Each (Supplied on a Reel)
£1.102(exc. VAT)
  • RS Stock No. 177-5071
  • Mfr. Part No. 2CSF204199R1400 F204 A-40/0,03 110V
Each
£178.43(exc. VAT)
  • RS Stock No. 228-668
  • Mfr. Part No. C14G25
1 Pack of 10
£13.72(exc. VAT)
  • RS Stock No. 167-7601
  • Mfr. Part No. 0034.1529
Each (In a Pack of 10)
£2.095(exc. VAT)
  • RS Stock No. 119-279
  • Mfr. Part No. C16M2TM125
Each
£448.43(exc. VAT)
Better World
  • RS Stock No. 200-6181
  • Mfr. Part No. M9F43208
Each
£125.09(exc. VAT)
  • RS Stock No. 184-9106
  • Mfr. Part No. DD101MS
Each
£83.68(exc. VAT)
  • RS Stock No. 563-497
Each (In a Pack of 10)
£0.358(exc. VAT)
  • RS Stock No. 288-7107
  • Mfr. Part No. A9L16382
Each
£686.00(exc. VAT)
  • RS Stock No. 922-7052
  • Mfr. Part No. 278588 FAZ-D40/1
Each
£25.71(exc. VAT)
  • RS Stock No. 204-355
  • Mfr. Part No. 2CDS272061R0278
Each
£224.92(exc. VAT)
  • RS Stock No. 218-8874
  • Mfr. Part No. 1492-SPM3D050
Each
£68.22(exc. VAT)
Better World
  • RS Stock No. 211-2422
  • Mfr. Part No. M9F42235
Each
£127.77(exc. VAT)
  • RS Stock No. 181-8528
  • Mfr. Part No. LST16
1 Box of 20
£109.21(exc. VAT)
  • RS Stock No. 396-033
  • Mfr. Part No. 3NE1334-0
Each (In a Pack of 3)
£317.523(exc. VAT)
  • RS Stock No. 377-2196
  • Mfr. Part No. 3821400041
Each (In a Pack of 10)
£1.473(exc. VAT)
  • RS Stock No. 181-8763
  • Mfr. Part No. ESD16
Each
£4.97(exc. VAT)
  • RS Stock No. 270-4901
  • Mfr. Part No. 3VA2612-7HN32-0AA0
Each
£4,307.32(exc. VAT)
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