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.

50915 Products showing for Fuses & Circuit Breakers

417 of 999+
Better World
  • RS Stock No. 219-9154
  • Mfr. Part No. M9F42201
Each
£131.78(exc. VAT)
  • RS Stock No. 723-4843
  • Mfr. Part No. ESX10-TB-101-DC24V-2A
Each
£61.58(exc. VAT)
  • RS Stock No. 270-7959
  • Mfr. Part No. 3412.0113.11
Each
£0.62(exc. VAT)
  • RS Stock No. 245-9197P
  • Mfr. Part No. SF-0603SPA100R-2
Each (Supplied on a Reel)
£0.89(exc. VAT)
  • RS Stock No. 357-064
  • Mfr. Part No. BGF16050
Each
£452.67(exc. VAT)
  • RS Stock No. 161-288
  • Mfr. Part No. 3VA9470-0WC00
Each (In a Pack of 10)
£7.09(exc. VAT)
Better World
  • RS Stock No. 209-6695
  • Mfr. Part No. 5SY6606-7
Each
£118.34(exc. VAT)
  • RS Stock No. 357-531
  • Mfr. Part No. KSA1000DLE4AM
Each
£2,933.25(exc. VAT)
  • RS Stock No. 212-8782
  • Mfr. Part No. 2800840
Each
£38.01(exc. VAT)
  • RS Stock No. 277-0926
  • Mfr. Part No. 3WA9111-0EK31
1 Set
£102.97(exc. VAT)
  • RS Stock No. 230-256
  • Mfr. Part No. 107776 NZMB2-A40-BT-NA
Each
£497.45(exc. VAT)
  • RS Stock No. 277-5059
  • Mfr. Part No. P1RE1NC25AC030
Each
£100.03(exc. VAT)
  • RS Stock No. 173-9849
  • Mfr. Part No. 4411.0108
Each (In a Box of 20)
£14.587(exc. VAT)
Better World
  • RS Stock No. 790-9279
  • Mfr. Part No. A9D12806
Each
£163.80(exc. VAT)
  • RS Stock No. 246-2614
  • Mfr. Part No. 2CCS572001R1108
Each
£160.35(exc. VAT)
  • RS Stock No. 260-7929
  • Mfr. Part No. C25L3
Each
£1,429.06(exc. VAT)
  • RS Stock No. 276-9257
  • Mfr. Part No. LV429493
Each
£1,654.16(exc. VAT)
  • RS Stock No. 357-470
  • Mfr. Part No. BGL26035LU
Each
£365.25(exc. VAT)
  • RS Stock No. 101-766
Each
£71.38(exc. VAT)
  • RS Stock No. 304-2164
  • Mfr. Part No. N300070
Each
£177.38(exc. VAT)
Results per page