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.

50958 Products showing for Fuses & Circuit Breakers

163 of 999+
  • RS Stock No. 849-6462
  • Mfr. Part No. EUC1P16B
Each
£7.91
  • RS Stock No. 204-246
  • Mfr. Part No. 2CDS243701R0324
Each
£55.67
  • RS Stock No. 212-202
  • Mfr. Part No. R9F23106
Each
£8.25
  • RS Stock No. 865-7994
  • Mfr. Part No. 0034.5045
Each (In a Pack of 10)
£0.745
  • RS Stock No. 299-078
  • Mfr. Part No. 1SNF100037R0000
Each
£6.40
  • RS Stock No. 865-7770
  • Mfr. Part No. 0034.3885
Each (In a Pack of 10)
£0.991
Better World
  • RS Stock No. 256-4051
  • Mfr. Part No. A9MEM1590
Each
£795.86
  • RS Stock No. 767-5156
Each (In a Pack of 10)
£0.241
  • RS Stock No. 435-368
  • Mfr. Part No. 2CCG001226R0001
Each
£96.68
  • RS Stock No. 412-425
  • Mfr. Part No. BK1-TDC11-3-R
Each (In a Pack of 10)
£1.657
  • RS Stock No. 247-2758
  • Mfr. Part No. G211560
1 Box of 10
£61.99
  • RS Stock No. 231-9567
  • Mfr. Part No. 2CCS800900R0041 S800-RD
Each
£59.94
  • RS Stock No. 541-3120A
  • Mfr. Part No. 0217010.MXP
Each (In a Pack of 100)
£0.09
  • RS Stock No. 259-655
  • Mfr. Part No. 271452 NZM4-XTVDVR-NA
Each
£278.91
  • RS Stock No. 630-835
  • Mfr. Part No. P090541Q
1 Box of 10
£5.59
Better World
  • RS Stock No. 221-0946
  • Mfr. Part No. LV429406
Each
£169.40
  • RS Stock No. 144-1829
  • Mfr. Part No. 0031.9158
Each
£17.97
  • RS Stock No. 231-9359
  • Mfr. Part No. 1SDA104843R1 RHE XT5 F/P
Each
£147.92
  • RS Stock No. 203-2026
  • Mfr. Part No. 3NA7814
Each (In a Pack of 3)
£4.82
  • RS Stock No. 188-7353
  • Mfr. Part No. Q217686
Each (In a Pack of 10)
£2.316
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