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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Better World
  • RS Stock No. 238-3381
  • Mfr. Part No. A9P26440
Each
£313.77(exc. VAT)
  • RS Stock No. 256-479
  • Mfr. Part No. 3VA5570-5EC46-2AA0
Each
£3,286.34(exc. VAT)
  • RS Stock No. 801-6911
  • Mfr. Part No. 0712291
Each
£14.31(exc. VAT)
  • RS Stock No. 258-382
  • Mfr. Part No. 269309 NZMN3-VEF300-NA
Each
£2,244.90(exc. VAT)
  • RS Stock No. 231-671
  • Mfr. Part No. 110898 NZMH3-VE400-T
Each
£2,796.77(exc. VAT)
  • RS Stock No. 665-105
  • Mfr. Part No. 3NC8425-0C
1 Pack of 3
£474.98(exc. VAT)
  • RS Stock No. 769-0180
  • Mfr. Part No. 57100000001
Each (In a Pack of 5)
£1.06(exc. VAT)
  • RS Stock No. 144-4743
  • Mfr. Part No. NFT720
Each
£69.53(exc. VAT)
  • RS Stock No. 213-0447
  • Mfr. Part No. 3RV2928-1K
Each
£5.75(exc. VAT)
  • RS Stock No. 147-681
  • Mfr. Part No. 3VA5170-6ED11-1AA0
Each
£164.15(exc. VAT)
Better World
  • RS Stock No. 238-3317
  • Mfr. Part No. A9DQ3716
Each
£695.14(exc. VAT)
  • RS Stock No. 253-274
  • Mfr. Part No. 215616 RVS-1PHAS+N/250
1 Pack of 3
£11.45(exc. VAT)
  • RS Stock No. 240-193
  • Mfr. Part No. 160NHG00B-400
1 Pack of 3
£14.01(exc. VAT)
  • RS Stock No. 269-8344
  • Mfr. Part No. 3ND1836
Each (In a Pack of 3)
£9.787(exc. VAT)
  • RS Stock No. 212-8788
  • Mfr. Part No. 2800860
Each
£39.07(exc. VAT)
  • RS Stock No. 184-9135
  • Mfr. Part No. DR108MS
Each
£96.71(exc. VAT)
  • RS Stock No. 277-6093
  • Mfr. Part No. 550210
Each (In a Pack of 4)
£52.16(exc. VAT)
  • RS Stock No. 254-4109
  • Mfr. Part No. PF-FB1-125
Each (In a Box of 20)
£75.252(exc. VAT)
  • RS Stock No. 179-2399
  • Mfr. Part No. L1047361
Each (In a Pack of 3)
£132.727(exc. VAT)
  • RS Stock No. 203-2257
  • Mfr. Part No. S 190/01 / 5WG1190-8AD01
Each
£97.38(exc. VAT)
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