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

185 of 999+
  • RS Stock No. 417-010
  • Mfr. Part No. 1110-F112-P1M1-10A
Each
£17.56(exc. VAT)
  • RS Stock No. 231-9637
  • Mfr. Part No. 2CDL220001R1648 PS2/48/16 H
1 Box of 1
£94.52(exc. VAT)
  • RS Stock No. 182-1466
  • Mfr. Part No. RS20P-GGN
Each (In a Box of 10)
£31.599(exc. VAT)
Better World
  • RS Stock No. 776-2821
  • Mfr. Part No. A9XPE110
Each
£5.92(exc. VAT)
  • RS Stock No. 787-4120P
  • Mfr. Part No. 0287015.PXCN
Each (Supplied in a Bag)
£0.225(exc. VAT)
  • RS Stock No. 177-8048
1 Box of 1000
£113.05(exc. VAT)
Better World
  • RS Stock No. 210-1632
  • Mfr. Part No. 3VA1120-3EE46-0AA0
Each
£241.09(exc. VAT)
  • RS Stock No. 395-793
  • Mfr. Part No. 3NA3807
Each (In a Pack of 3)
£6.093(exc. VAT)
  • RS Stock No. 336-613
  • Mfr. Part No. SE10D316
Each
£103.09(exc. VAT)
  • RS Stock No. 285-7762
  • Mfr. Part No. 4303.2014.05
Each
£9.13(exc. VAT)
  • RS Stock No. 229-1419P
  • Mfr. Part No. 0456040.DRSDE
Each (Supplied on a Reel)
£3.985(exc. VAT)
Better World
  • RS Stock No. 772-1300
  • Mfr. Part No. 5SY4210-6
Each
£54.31(exc. VAT)
  • RS Stock No. 233-0608
  • Mfr. Part No. BK4-HTC-528M
1 Box of 4000
£4,030.45(exc. VAT)
  • RS Stock No. 184-9048
  • Mfr. Part No. CPB1040C3
Each
£14.68(exc. VAT)
  • RS Stock No. 182-1532
  • Mfr. Part No. SMD10
Each (In a Box of 20)
£4.04(exc. VAT)
  • RS Stock No. 692-7639
  • Mfr. Part No. MF-FSMF035X-2
Each (In a Pack of 5)
£0.284(exc. VAT)
  • RS Stock No. 240-9241
  • Mfr. Part No. IK8800.11 AC50Hz 230V
Each
£46.47(exc. VAT)
  • RS Stock No. 276-8717
  • Mfr. Part No. A9C15907
Each
£177.67(exc. VAT)
  • RS Stock No. 624-0327
  • Mfr. Part No. 278553 FAZ-C4/1
Each
£26.05(exc. VAT)
  • RS Stock No. 801-6905
  • Mfr. Part No. 0712233
Each
£14.31(exc. VAT)
Results per page