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.

50973 Products showing for Fuses & Circuit Breakers

679 of 999+
  • RS Stock No. 167-8121
  • Mfr. Part No. 0034.3125
Each (In a Pack of 10)
£0.377
  • RS Stock No. 240-426
  • Mfr. Part No. 100669 NZM3-XTVDV-60-NA
Each
£187.93
  • RS Stock No. 246-858
  • Mfr. Part No. 191624 NZMN2-MX220-SVE
Each
£1,390.31
  • RS Stock No. 680-4233P
  • Mfr. Part No. ST37001
Each (Supplied in a Box)
£24.03
Better World
  • RS Stock No. 178-8142
  • Mfr. Part No. LV426227
Each
£363.55
  • RS Stock No. 269-3852
  • Mfr. Part No. 7010.3290
Each
£1.41
Better World
  • RS Stock No. 221-1156
  • Mfr. Part No. LV429242
Each
£22.11
  • RS Stock No. 117-349
  • Mfr. Part No. KV PC 9224
Each
£148.65
  • RS Stock No. 340-980
  • Mfr. Part No. A9C61216
Each
£229.16
  • RS Stock No. 252-761
  • Mfr. Part No. 193508 FRBmM-C40/1N/03-F
Each
£185.51
  • RS Stock No. 119-529
  • Mfr. Part No. LV833812
Each
£217.38
  • RS Stock No. 256-855
  • Mfr. Part No. 280353 BC-U-1/8-ECO
Each
£31.97
  • RS Stock No. 257-185
  • Mfr. Part No. 3VA5445-6EC31-0AA0
Each
£1,720.02
Better World
  • RS Stock No. 219-9402
  • Mfr. Part No. LV432503
Each
£108.95
Better World
  • RS Stock No. 220-1344
  • Mfr. Part No. M9A26960
Each
£113.11
  • RS Stock No. 211-9593
  • Mfr. Part No. 5SM6024-2
Each
£290.20
  • RS Stock No. 247-1772
  • Mfr. Part No. 33290
Each
£3,443.62
  • RS Stock No. 881-1182
  • Mfr. Part No. CX1-B0-14-615-32A-12G
Each (In a Pack of 10)
£117.353
  • RS Stock No. 178-1028
  • Mfr. Part No. Q1045272 / BTIS42V63
Each (In a Pack of 10)
£11.206
  • RS Stock No. 769-4475
  • Mfr. Part No. 239118 FAZ6-B50/3
Each
£102.99
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