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. 238-4041
  • Mfr. Part No. H220968
Each
£39.75(exc. VAT)
  • RS Stock No. 173-7935
  • Mfr. Part No. 8601.2005.08
Each (In a Box of 50)
£1.314(exc. VAT)
  • RS Stock No. 552-253
  • Mfr. Part No. 0216.200MXP
1 Bag of 100
£84.12(exc. VAT)
  • RS Stock No. 232-0152
  • Mfr. Part No. 1SDA062120R1 RHD T7 F-W
Each
£151.58(exc. VAT)
  • RS Stock No. 825-5627
  • Mfr. Part No. P1MB1PD02
Each
£17.93(exc. VAT)
  • RS Stock No. 231-8352
  • Mfr. Part No. 5SP3750-2KK03
Each
£94.42(exc. VAT)
Better World
  • RS Stock No. 271-9625
  • Mfr. Part No. 3VA10962ED360AA0
Each
£161.86(exc. VAT)
  • RS Stock No. 769-3343
  • Mfr. Part No. SS-5-400MA-BK
Each (In a Pack of 5)
£0.654(exc. VAT)
  • RS Stock No. 201-6932
  • Mfr. Part No. 2CSR275180R1164 DS201 M C16 A30
Each
£133.31(exc. VAT)
  • RS Stock No. 726-4715
  • Mfr. Part No. 143BBC 143BBC
Each
£1,246.18(exc. VAT)
  • RS Stock No. 552-929
  • Mfr. Part No. 0215010.MXEP
1 Bag of 100
£54.46(exc. VAT)
  • RS Stock No. 250-4125
  • Mfr. Part No. 1SDA054390R1
Each
£3,012.08(exc. VAT)
Better World
  • RS Stock No. 225-5986
  • Mfr. Part No. 2CDS251001R0104 S201 C 10A - 10 KA
Each
£16.45(exc. VAT)
  • RS Stock No. 738-2826P
  • Mfr. Part No. 0326010.MXP
Each (Supplied on a Reel)
£1.663(exc. VAT)
  • RS Stock No. 563-328A
Each (In a Pack of 100)
£0.18(exc. VAT)
Better World
  • RS Stock No. 270-4118
  • Mfr. Part No. 3VA2116-8HL32-0AA0
Each
£837.97(exc. VAT)
  • RS Stock No. 254-4136
  • Mfr. Part No. PF-FB2-125
Each
£102.19(exc. VAT)
  • RS Stock No. 169-9555
  • Mfr. Part No. SS-5H-4A-BK
Each (In a Bag of 200)
£0.284(exc. VAT)
  • RS Stock No. 210-9359
  • Mfr. Part No. 3VA9263-0JF60
Each
£75.02(exc. VAT)
  • RS Stock No. 227-0717
  • Mfr. Part No. 264284 PFGM-40/2/01-S
Each
£222.63(exc. VAT)
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