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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Better World
  • RS Stock No. 622-0109
  • Mfr. Part No. 5SY4304-7
Each
£90.63(exc. VAT)
  • RS Stock No. 489-961
  • Mfr. Part No. 236232 PXL-B20/2
Each
£35.92(exc. VAT)
  • RS Stock No. 218-8733
  • Mfr. Part No. 1492-SPM1C050-N
Each
£41.60(exc. VAT)
  • RS Stock No. 210-4740
  • Mfr. Part No. EUC7RC.20/1CA
Each
£60.76(exc. VAT)
  • RS Stock No. 782-7938
  • Mfr. Part No. W57-XB7A4A10-5
Each
£2.68(exc. VAT)
  • RS Stock No. 277-6091
  • Mfr. Part No. 550190
Each (In a Pack of 10)
£62.64(exc. VAT)
  • RS Stock No. 339-629
  • Mfr. Part No. SEA9BPN12PEV
Each
£497.01(exc. VAT)
  • RS Stock No. 396-039
  • Mfr. Part No. 3NA3022
Each (In a Pack of 3)
£25.31(exc. VAT)
  • RS Stock No. 211-0189
  • Mfr. Part No. 5SD7461-0
Each
£80.14(exc. VAT)
  • RS Stock No. 552-452
  • Mfr. Part No. 37200800001
1 Bag of 100
£103.94(exc. VAT)
Better World
  • RS Stock No. 201-2246
  • Mfr. Part No. A9DF3610
Each
£266.22(exc. VAT)
  • RS Stock No. 184-9059
  • Mfr. Part No. CPB25
Each
£3.28(exc. VAT)
  • RS Stock No. 847-3260
  • Mfr. Part No. 278871 FAZ-C13/3
Each
£84.71(exc. VAT)
  • RS Stock No. 560-351
  • Mfr. Part No. 0ZCG0260BF2B
Each
£0.22(exc. VAT)
  • RS Stock No. 395-632
  • Mfr. Part No. 3NE4117
Each (In a Pack of 3)
£72.64(exc. VAT)
  • RS Stock No. 180-066
1 Pack of 10
£152.52(exc. VAT)
  • RS Stock No. 201-6961
  • Mfr. Part No. 2CSR255180R0104
Each
£157.08(exc. VAT)
  • RS Stock No. 801-6211
  • Mfr. Part No. 2950048
Each
£15.03(exc. VAT)
Better World
  • RS Stock No. 746-7801
  • Mfr. Part No. 2CDS254001R0164 S204-C16
Each
£155.20(exc. VAT)
  • RS Stock No. 731-9869
  • Mfr. Part No. 4 107 08
Each
£277.08(exc. VAT)
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