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

20 of 999+
  • RS Stock No. 454-8051
  • Mfr. Part No. 259077 NZMB1-A63
Each
£290.32(exc. VAT)
  • RS Stock No. 237-5260
Each
£5.26(exc. VAT)
  • RS Stock No. 144-4949
  • Mfr. Part No. MJT710
Each
£24.03(exc. VAT)
Better World
  • RS Stock No. 790-9349
  • Mfr. Part No. A9D11832
Each
£148.47(exc. VAT)
  • RS Stock No. 797-6046
  • Mfr. Part No. SF 070 R
Each (In a Pack of 10)
£0.829(exc. VAT)
  • RS Stock No. 787-4101
  • Mfr. Part No. 0287010.PXCN
1 Pack of 10
£2.37(exc. VAT)
Better World
  • RS Stock No. 850-8606
  • Mfr. Part No. EZ9F16120
Each
£4.03(exc. VAT)
  • RS Stock No. 418-681
  • Mfr. Part No. SC20H
Each
£9.19(exc. VAT)
  • RS Stock No. 181-8801
  • Mfr. Part No. STD6
Each
£3.18(exc. VAT)
Better World
  • RS Stock No. 219-9127
  • Mfr. Part No. M9F22213
Each
£73.21(exc. VAT)
  • RS Stock No. 605-8948
  • Mfr. Part No. 943121
Each
£16.72(exc. VAT)
  • RS Stock No. 230-1095
  • Mfr. Part No. 264690 PLG6-C2/1N
Each
£15.37(exc. VAT)
  • RS Stock No. 521-2551
Each (In a Pack of 5)
£5.254(exc. VAT)
  • RS Stock No. 563-611
1 Pack of 10
£3.85(exc. VAT)
  • RS Stock No. 124-3047
  • Mfr. Part No. EMCH332 EMCH332
Each
£102.62(exc. VAT)
  • RS Stock No. 161-054
  • Mfr. Part No. ED355
Each
£40.67(exc. VAT)
  • RS Stock No. 914-4055
  • Mfr. Part No. 2CSR255051R1205 DSE201 B20 AC30 - N Blue
Each
£69.72(exc. VAT)
  • RS Stock No. 414-601
  • Mfr. Part No. FX0380
Each (In a Pack of 5)
£8.15(exc. VAT)
  • RS Stock No. 273-0854
  • Mfr. Part No. 1658-G21-02-P10-5A
Each
£4.86(exc. VAT)
  • RS Stock No. 210-2068
  • Mfr. Part No. 3120-N521-H7T1-W01D-16A
Each
£27.59(exc. VAT)
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