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

416 of 999+
  • RS Stock No. 132-932
  • Mfr. Part No. 183898 IZMX40B4-V20F-1
Each
£11,734.02(exc. VAT)
  • RS Stock No. 125-1542
  • Mfr. Part No. 189-AL11
Each
£18.13(exc. VAT)
  • RS Stock No. 233-0570
  • Mfr. Part No. BK16-HTJ-601I
Each (In a Pack of 10)
£8.228(exc. VAT)
  • RS Stock No. 339-629
  • Mfr. Part No. SEA9BPN12PEV
Each
£497.01(exc. VAT)
  • RS Stock No. 272-0331
  • Mfr. Part No. 8GK1082-3KK41
Each
£1,842.24(exc. VAT)
  • RS Stock No. 340-924
  • Mfr. Part No. C080L3WM
Each
£3,367.25(exc. VAT)
  • RS Stock No. 852-6976
  • Mfr. Part No. HTB-56I-R
Each
£2.31(exc. VAT)
  • RS Stock No. 225-8257
  • Mfr. Part No. PTSLR12066V380
1 Reel of 2500
£695.79(exc. VAT)
  • RS Stock No. 121-212
  • Mfr. Part No. 167886 FRCDM-63/4/03-G/B+
Each
£988.38(exc. VAT)
  • RS Stock No. 240-911
  • Mfr. Part No. 191381 NZMH3-4-VX400/VAR-AVE
Each
£3,760.20(exc. VAT)
  • RS Stock No. 783-3232
  • Mfr. Part No. 70-007-33/1.6A
Each (In a Pack of 10)
£0.522(exc. VAT)
Better World
  • RS Stock No. 243-6206
  • Mfr. Part No. 5SU1336-7FP06
Each
£319.04(exc. VAT)
  • RS Stock No. 602-049
  • Mfr. Part No. BD263
Each
£594.49(exc. VAT)
  • RS Stock No. 258-301
  • Mfr. Part No. 281567 NZMN1-AF30-NA
Each
£414.12(exc. VAT)
  • RS Stock No. 712-4793P
  • Mfr. Part No. 0091.0001
Each (Supplied in a Box)
£12.96(exc. VAT)
Better World
  • RS Stock No. 209-6005
  • Mfr. Part No. 5SY4215-7
Each
£65.76(exc. VAT)
  • RS Stock No. 703-2708P
  • Mfr. Part No. 3403.0176.24
Each (Supplied on a Reel)
£0.575(exc. VAT)
Better World
  • RS Stock No. 211-9714
  • Mfr. Part No. 5SV3647-6KK12
Each
£1,043.16(exc. VAT)
  • RS Stock No. 621-9834
  • Mfr. Part No. 5SJ6313-6KS
Each
£81.84(exc. VAT)
  • RS Stock No. 262-391
  • Mfr. Part No. 400NHG03B-400
1 Pack of 3
£40.67(exc. VAT)
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