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.

50907 Products showing for Fuses & Circuit Breakers

591 of 999+
  • RS Stock No. 132-831
  • Mfr. Part No. 183591 IZMX40B3-P20W-1
Each
£13,882.64(exc. VAT)
  • RS Stock No. 178-1149
  • Mfr. Part No. Z1006640 / BTTM69V500
Each
£214.74(exc. VAT)
Better World
  • RS Stock No. 259-3157
  • Mfr. Part No. 1SDA071012R1
Each
£5,396.05(exc. VAT)
  • RS Stock No. 217-6364
  • Mfr. Part No. 2800866
Each
£39.56(exc. VAT)
  • RS Stock No. 101-785
Each
£42.03(exc. VAT)
  • RS Stock No. 517-7127
  • Mfr. Part No. MINISMDC075F-2
Each (In a Pack of 10)
£0.33(exc. VAT)
Better World
  • RS Stock No. 155-846
  • Mfr. Part No. 3VA2440-7HL32-0AA0
Each
£1,945.75(exc. VAT)
Better World
  • RS Stock No. 156-742
  • Mfr. Part No. 3VA2340-5KQ32-0AA0
Each
£2,853.29(exc. VAT)
  • RS Stock No. 260-7855
  • Mfr. Part No. C25B3
Each
£633.15(exc. VAT)
  • RS Stock No. 270-3147
  • Mfr. Part No. Z085375
Each (In a Box of 10)
£0.984(exc. VAT)
  • RS Stock No. 136-0593
  • Mfr. Part No. Z1014575 / FR10GR69V8
Each
£6.46(exc. VAT)
Better World
  • RS Stock No. 746-7970
  • Mfr. Part No. 2CDS252001R0277 S202-K2
Each
£68.06(exc. VAT)
  • RS Stock No. 899-0967
  • Mfr. Part No. 2621003
Each (In a Pack of 10)
£2.273(exc. VAT)
  • RS Stock No. 161-7620
  • Mfr. Part No. SR-5-1-6A-BK
Each (In a Bag of 200)
£0.465(exc. VAT)
  • RS Stock No. 148-544
  • Mfr. Part No. 3VA5112-5EC31-1AA0
Each
£516.00(exc. VAT)
  • RS Stock No. 228-679
  • Mfr. Part No. C14M6 CYLINDRICAL FUSE 14 x 51 6A AM 690V AC
1 Pack of 10
£14.34(exc. VAT)
  • RS Stock No. 779-9993
  • Mfr. Part No. 1SCA022627R2360
Each
£9.63(exc. VAT)
  • RS Stock No. 135-903
  • Mfr. Part No. 0915001
1 Pack of 3
£500.01(exc. VAT)
  • RS Stock No. 336-641
  • Mfr. Part No. C104MG100
Each
£229.26(exc. VAT)
  • RS Stock No. 265-564
  • Mfr. Part No. 8US1998-1DA54
1 Pack of 10
£47.47(exc. VAT)
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