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. 144-1834
  • Mfr. Part No. 0031.9161
Each
£16.86(exc. VAT)
  • RS Stock No. 188-1615
  • Mfr. Part No. FB01B2P
Each
£10.75(exc. VAT)
  • RS Stock No. 611-9138
Each
£143.03(exc. VAT)
  • RS Stock No. 875-1037
  • Mfr. Part No. 3RA2933-2BB1
Each
£51.06(exc. VAT)
  • RS Stock No. 167-7702
  • Mfr. Part No. 0034.1516
1 Pack of 10
£3.31(exc. VAT)
  • RS Stock No. 849-6525
  • Mfr. Part No. EUC1P50C
Each
£6.92(exc. VAT)
  • RS Stock No. 231-8304
  • Mfr. Part No. 5SM2645-6
Each
£146.78(exc. VAT)
  • RS Stock No. 223-2785
  • Mfr. Part No. 60120012
Each (In a Pack of 10)
£0.869(exc. VAT)
  • RS Stock No. 144-4545
  • Mfr. Part No. LS702
Each
£70.04(exc. VAT)
  • RS Stock No. 232-0310
  • Mfr. Part No. 1SL1948A00 MISTRAL
Each
£5.06(exc. VAT)
  • RS Stock No. 894-9593
  • Mfr. Part No. 04773.15MXP
Each (In a Pack of 5)
£1.516(exc. VAT)
  • RS Stock No. 454-8045
  • Mfr. Part No. 259076 NZMB1-A50
Each
£290.32(exc. VAT)
  • RS Stock No. 304-2439
  • Mfr. Part No. J300020
Each
£121.54(exc. VAT)
  • RS Stock No. 299-071
  • Mfr. Part No. 1SNF100027R0000
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£8.72(exc. VAT)
Better World
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  • Mfr. Part No. 2CDS251001R0255 S201-B25
Each
£16.38(exc. VAT)
Better World
  • RS Stock No. 219-8276
  • Mfr. Part No. A9L40281
Each
£163.12(exc. VAT)
  • RS Stock No. 124-2498
  • Mfr. Part No. 7TCA083670R0685 LK245-10
Each
£262.43(exc. VAT)
Better World
  • RS Stock No. 806-7225
  • Mfr. Part No. A9XPH357
Each
£173.74(exc. VAT)
  • RS Stock No. 181-8783
  • Mfr. Part No. NSD20M32
Each
£5.36(exc. VAT)
  • RS Stock No. 136-0486
  • Mfr. Part No. K219820 / NH2GG50V315-1
Each (In a Box of 3)
£34.687(exc. VAT)
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