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

299 of 999+
  • RS Stock No. 223-1712
  • Mfr. Part No. MF-MSMF150/24X-2
Each (On a Reel of 3000)
£0.278(exc. VAT)
  • RS Stock No. 654-878
  • Mfr. Part No. LV429371T
Each
£38.21(exc. VAT)
  • RS Stock No. 272-0183
  • Mfr. Part No. 3VA1580-5EF32-0KF0
Each
£2,145.56(exc. VAT)
  • RS Stock No. 173-8072
  • Mfr. Part No. 4404.0096
Each (In a Box of 100)
£2.484(exc. VAT)
Better World
  • RS Stock No. 210-9280
  • Mfr. Part No. 3VA9104-0JB11
Each
£21.22(exc. VAT)
  • RS Stock No. 654-823
  • Mfr. Part No. SEA9BPNAFD24
Each
£565.55(exc. VAT)
  • RS Stock No. 599-743
  • Mfr. Part No. CDC447F
Each
£222.55(exc. VAT)
  • RS Stock No. 183-3707
  • Mfr. Part No. 2CSR245041R3204
Each
£151.32(exc. VAT)
Better World
  • RS Stock No. 202-7060
  • Mfr. Part No. 5SV3314-6KL
Each
£125.81(exc. VAT)
  • RS Stock No. 181-8557
  • Mfr. Part No. 160NHG00B-660
1 Box of 3
£16.04(exc. VAT)
  • RS Stock No. 244-909
  • Mfr. Part No. A9V41340
Each
£245.21(exc. VAT)
  • RS Stock No. 178-0993
  • Mfr. Part No. F1006577 / BNIT55V4
Each (In a Pack of 10)
£3.735(exc. VAT)
  • RS Stock No. 769-4807
  • Mfr. Part No. 168067 FAZ6-D40/1
Each
£23.55(exc. VAT)
Better World
  • RS Stock No. 238-3349
  • Mfr. Part No. A9DV7632
Each
£254.52(exc. VAT)
Better World
  • RS Stock No. 218-3907
  • Mfr. Part No. A9R87725
Each
£438.13(exc. VAT)
Better World
  • RS Stock No. 209-7013
  • Mfr. Part No. 3VA1180-3EF32-0AA0
Each
£208.36(exc. VAT)
  • RS Stock No. 207-2795
  • Mfr. Part No. 2908261
Each
£49.12(exc. VAT)
  • RS Stock No. 237-5069
  • Mfr. Part No. 2CSR253001R1325
Each
£258.51(exc. VAT)
  • RS Stock No. 144-1825
  • Mfr. Part No. 0031.9156
Each
£16.73(exc. VAT)
  • RS Stock No. 599-748
  • Mfr. Part No. CDF840F
Each
£284.26(exc. VAT)
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