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

122 of 999+
  • RS Stock No. 488-6993
  • Mfr. Part No. 2CDS251001R0135 - S201B13
Each
£16.38
  • RS Stock No. 537-1470
  • Mfr. Part No. S506-630-R
Each (In a Pack of 10)
£0.166
  • RS Stock No. 219-3621
  • Mfr. Part No. 0299080.TXN
Each (In a Pack of 10)
£2.745
  • RS Stock No. 517-6607
  • Mfr. Part No. RXEF025
Each (In a Pack of 10)
£0.352
  • RS Stock No. 276-8952
  • Mfr. Part No. R9H13403
Each
£31.34
  • RS Stock No. 359-5719
  • Mfr. Part No. FX0455/S
Each (In a Pack of 5)
£6.59
  • RS Stock No. 541-2919
  • Mfr. Part No. 0218.125MXP
Each (In a Pack of 10)
£1.311
  • RS Stock No. 486-978
  • Mfr. Part No. 236031 PXL-B13/1
Each
£8.87
  • RS Stock No. 541-4410A
  • Mfr. Part No. 0217002.MXP
Each (In a Pack of 100)
£0.142
Better World
  • RS Stock No. 527-9419
  • Mfr. Part No. 2CDS251001R0011 S201-D1
Each
£17.94
  • RS Stock No. 230-0862
  • Mfr. Part No. 177374 FAZ6-B1,5/1
Each
£19.76
  • RS Stock No. 535-4251
  • Mfr. Part No. 2CDS273001R0064 S203M-C6
Each
£84.56
  • RS Stock No. 712-7515
  • Mfr. Part No. AHEF070
Each (In a Pack of 10)
£0.485
  • RS Stock No. 219-3570
  • Mfr. Part No. 0299040.TXN
Each (In a Pack of 10)
£2.09
Better World
  • RS Stock No. 201-2253
  • Mfr. Part No. A9P44610
Each
£52.22
Better World
  • RS Stock No. 850-8616
  • Mfr. Part No. EZ9F16150
Each
£2.44
  • RS Stock No. 212-166
  • Mfr. Part No. A9D07616
Each
£60.50
  • RS Stock No. 293-8193
  • Mfr. Part No. 0 123 10
1 Pack of 10
£14.87
  • RS Stock No. 783-3324
  • Mfr. Part No. 70-007-65/5A
Each (In a Pack of 10)
£0.522
  • RS Stock No. 101-801
Each
£44.66
Results per page