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. 270-3104
  • Mfr. Part No. R222494
Each
£20.15(exc. VAT)
  • RS Stock No. 182-1521
  • Mfr. Part No. 40ET
Each (In a Box of 10)
£16.688(exc. VAT)
  • RS Stock No. 285-5319
  • Mfr. Part No. 2827970000
Each (In a Pack of 10)
£3.969(exc. VAT)
  • RS Stock No. 180-6106
  • Mfr. Part No. 0 130 01
Each (In a Box of 10)
£2.03(exc. VAT)
  • RS Stock No. 182-1835
  • Mfr. Part No. 170M1566D
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£60.43(exc. VAT)
  • RS Stock No. 735-2806
  • Mfr. Part No. 3TX6526-3B
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£65.70(exc. VAT)
  • RS Stock No. 218-8698
  • Mfr. Part No. 1492-SPM1B030-N
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£34.08(exc. VAT)
  • RS Stock No. 232-0309
  • Mfr. Part No. 1SL1931A00 MISTRAL
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£10.17(exc. VAT)
  • RS Stock No. 181-8888
  • Mfr. Part No. C14M20
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£2.25(exc. VAT)
  • RS Stock No. 922-7059
  • Mfr. Part No. 278644 FAZ-B10/1N
Each
£58.64(exc. VAT)
Better World
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  • Mfr. Part No. 1SDA068500R1 XT4S 250 Ekip I 250A FF
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£1,020.12(exc. VAT)
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  • Mfr. Part No. 236012 PKNM-6/1N/B/003-A-MW
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£187.41(exc. VAT)
  • RS Stock No. 207-268
  • Mfr. Part No. SEA9NB12
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£90.44(exc. VAT)
Better World
  • RS Stock No. 254-6286
  • Mfr. Part No. C10F3TM100
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£529.13(exc. VAT)
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  • Mfr. Part No. 0031.1351
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£23.25(exc. VAT)
Better World
  • RS Stock No. 254-6355
  • Mfr. Part No. C25F3TM200
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£1,452.16(exc. VAT)
  • RS Stock No. 250-4512
  • Mfr. Part No. 1SDA038316R1
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£375.38(exc. VAT)
  • RS Stock No. 511-8730
  • Mfr. Part No. CH260034
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£10.73(exc. VAT)
  • RS Stock No. 538-3849
  • Mfr. Part No. 2CDE283001R0125 E203/125R
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£95.57(exc. VAT)
  • RS Stock No. 219-6254P
  • Mfr. Part No. 0154004.DRT
Each (Supplied on a Reel)
£1.751(exc. VAT)
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