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

485 of 999+
  • RS Stock No. 177-5095
  • Mfr. Part No. 2CSF204201R4400 F204 A S-40/0,5
Each
£255.06(exc. VAT)
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  • Mfr. Part No. 118969 NZMH2-ME200-NA
Each
£2,445.06(exc. VAT)
  • RS Stock No. 174-0404
  • Mfr. Part No. RF1180-000
1 Reel of 5000
£1,539.53(exc. VAT)
Better World
  • RS Stock No. 746-7602
  • Mfr. Part No. 2CDS253001R0255 S203-B25
Each
£62.50(exc. VAT)
  • RS Stock No. 323-9037
  • Mfr. Part No. GB2CD10
Each
£47.67(exc. VAT)
  • RS Stock No. 438-844
  • Mfr. Part No. M9L23240
Each
£1,009.30(exc. VAT)
Better World
  • RS Stock No. 243-6150
  • Mfr. Part No. 5SU1324-6KK82
Each
£1,231.17(exc. VAT)
  • RS Stock No. 223-2770
  • Mfr. Part No. 170M6811
Each
£132.60(exc. VAT)
Better World
  • RS Stock No. 175-1484
  • Mfr. Part No. GV4LE80B
Each
£300.81(exc. VAT)
  • RS Stock No. 654-208
  • Mfr. Part No. IL0301P251
Each
£145.61(exc. VAT)
Better World
  • RS Stock No. 243-6202
  • Mfr. Part No. 5SU1336-6FP06
Each
£261.03(exc. VAT)
  • RS Stock No. 147-547
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Each
£142.44(exc. VAT)
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  • Mfr. Part No. L1065692 / BLST24V32
Each (In a Pack of 10)
£3.761(exc. VAT)
  • RS Stock No. 237-6171
  • Mfr. Part No. 1SDA066950R1 R XT4 4PCS
Each
£78.45(exc. VAT)
  • RS Stock No. 212-135
  • Mfr. Part No. R9D01613
Each
£54.36(exc. VAT)
  • RS Stock No. 181-8912
  • Mfr. Part No. C14M16
Each
£1.95(exc. VAT)
  • RS Stock No. 257-660
  • Mfr. Part No. 3VA5450-7EF31-0AA0
Each
£1,962.48(exc. VAT)
  • RS Stock No. 181-8626
  • Mfr. Part No. 160NHM1B-690
Each
£19.97(exc. VAT)
  • RS Stock No. 893-8571
  • Mfr. Part No. 20-211-08/160A
Each (In a Pack of 3)
£24.263(exc. VAT)
Better World
  • RS Stock No. 212-1631
  • Mfr. Part No. 2CDS252280R0255
Each
£40.04(exc. VAT)
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