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. 541-4280
  • Mfr. Part No. 0217.125MXP
Each (In a Pack of 10)
£1.025(exc. VAT)
  • RS Stock No. 272-0735
  • Mfr. Part No. 174512 AZ-3-B80
Each
£250.29(exc. VAT)
  • RS Stock No. 703-8364P
  • Mfr. Part No. C10G0-5
Each (Supplied in a Box)
£0.983(exc. VAT)
  • RS Stock No. 628-8026
  • Mfr. Part No. 265724 NZMN2-M160
1 Box of 1
£602.16(exc. VAT)
  • RS Stock No. 123-2856
  • Mfr. Part No. 097.42
Each
£1.83(exc. VAT)
  • RS Stock No. 260-730
  • Mfr. Part No. C1520
1 Pack of 10
£34.26(exc. VAT)
  • RS Stock No. 541-3489
  • Mfr. Part No. 021901.6MXAP
Each (In a Pack of 10)
£0.781(exc. VAT)
  • RS Stock No. 849-6020
  • Mfr. Part No. GDA-400MA
Each (In a Pack of 5)
£5.958(exc. VAT)
  • RS Stock No. 127-426
  • Mfr. Part No. 180608 FRCMM-40/2/03-A-110
Each
£130.82(exc. VAT)
  • RS Stock No. 127-218
  • Mfr. Part No. 183028 XNH00-FCL-A160-BT
Each
£100.04(exc. VAT)
  • RS Stock No. 247-1895
  • Mfr. Part No. 48300
Each
£11,348.84(exc. VAT)
  • RS Stock No. 251-2014
  • Mfr. Part No. ADC432F
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£411.87(exc. VAT)
  • RS Stock No. 228-8264
  • Mfr. Part No. 8WC5126
Each
£76.11(exc. VAT)
  • RS Stock No. 260-7564
  • Mfr. Part No. C11E3TM100B
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£315.27(exc. VAT)
  • RS Stock No. 255-785
  • Mfr. Part No. 240897 FAZT-C25/3
Each
£182.82(exc. VAT)
  • RS Stock No. 535-6011
  • Mfr. Part No. 2CDS271001R0255 S201M-B25
Each
£18.34(exc. VAT)
  • RS Stock No. 229-856
  • Mfr. Part No. 113234 NZMC2-4-A160/100-SVE
Each
£1,212.58(exc. VAT)
  • RS Stock No. 255-1632
  • Mfr. Part No. 140G-G2C3-C50
Each
£191.87(exc. VAT)
  • RS Stock No. 218-8744
  • Mfr. Part No. 1492-SPM1C160-N
Each
£40.86(exc. VAT)
  • RS Stock No. 201-279
  • Mfr. Part No. 2CDS381001R0024
Each
£36.06(exc. VAT)
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