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.

46604 Products showing for Fuses & Circuit Breakers

12 / 999+
Better World
  • RS Stock No. 221-1271
  • Mfr. Part No. LV432620
Each
MYR4,812.41
Better World
  • RS Stock No. 156-827
  • Mfr. Part No. 3VA2216-5HM32-0AA0
Each
MYR9,672.65
  • RS Stock No. 801-6911
  • Mfr. Part No. 0712291
Each
MYR82.25
  • RS Stock No. 395-765
  • Mfr. Part No. 5SA251
Each (In a Pack of 10)
MYR28.307
  • RS Stock No. 377-0500
  • Mfr. Part No. C214063
Each (In a Pack of 5)
MYR22.082
  • RS Stock No. 265-0195
Each
MYR54.92
  • RS Stock No. 895-1669
  • Mfr. Part No. 37205000431
Each (In a Pack of 10)
MYR4.956
  • RS Stock No. 414-033
Each (In a Pack of 10)
MYR6.773
  • RS Stock No. 782-7988
  • Mfr. Part No. W54-XB1A4A10-20
Each
MYR26.53
  • RS Stock No. 563-716
Each (In a Pack of 10)
MYR3.339
  • RS Stock No. 269-3858
  • Mfr. Part No. 7010.3470
Each
MYR4.50
  • RS Stock No. 269-3855
  • Mfr. Part No. 7010.3440
Each
MYR4.80
  • RS Stock No. 177-8099
Each (In a Pack of 5)
MYR7.454
  • RS Stock No. 703-8768
  • Mfr. Part No. 630NHG3B
Each
MYR170.34
Better World
  • RS Stock No. 231-9677
  • Mfr. Part No. 2CDS252001R0824 S202-C100 6kA
1 Box of 1
MYR677.89
  • RS Stock No. 396-168
  • Mfr. Part No. 5SB221
Each (In a Pack of 5)
MYR7.64
  • RS Stock No. 782-0876
  • Mfr. Part No. W23-X1A1G-30
Each
MYR195.87
  • RS Stock No. 668-6041
Each (In a Pack of 10)
MYR1.826
  • RS Stock No. 122-5262
  • Mfr. Part No. 60120002
Each (In a Pack of 10)
MYR6.272
  • RS Stock No. 178-8006
  • Mfr. Part No. 262518 BK25/3-PKZ0-E
Each
MYR83.25
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