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.

51057 Products showing for Fuses & Circuit Breakers

573 of 999+
  • RS Stock No. 248-364
  • Mfr. Part No. 058247 SH0635/3
Each
£19.30
Better World
  • RS Stock No. 539-8201
  • Mfr. Part No. 2CDS211001R0064 SH201-C6
Each
£14.75
Better World
  • RS Stock No. 131-977
  • Mfr. Part No. 2CDS272001R0084 S202M-C8
Each
£52.80
  • RS Stock No. 240-6403
  • Mfr. Part No. CCPBR1040AC
Each
£34.64
Better World
  • RS Stock No. 268-664
  • Mfr. Part No. 3VA6110-7JP41-0AA0
Each
£1,295.69
  • RS Stock No. 736-0740
  • Mfr. Part No. 3403.0166.24
Each (In a Pack of 10)
£0.563
  • RS Stock No. 250-4376
  • Mfr. Part No. 1SCA022660R9000
1 Box of 3
£24.01
  • RS Stock No. 817-1655
  • Mfr. Part No. MF-LSMF185/33X-2
Each (In a Pack of 10)
£0.554
  • RS Stock No. 535-4346
  • Mfr. Part No. 2CDS273001R0504 S203M-C50
Each
£88.71
  • RS Stock No. 181-8454
  • Mfr. Part No. STD6
1 Box of 20
£50.97
Better World
  • RS Stock No. 746-7829
  • Mfr. Part No. 2CDS254001R0634 S204-C63
Each
£155.91
Better World
  • RS Stock No. 238-3380
  • Mfr. Part No. A9P24725
Each
£155.55
  • RS Stock No. 454-8039
  • Mfr. Part No. 259075 NZMB1-A40
Each
£290.32
  • RS Stock No. 435-532
  • Mfr. Part No. 2CCS800900R0191 S800-SOR24
Each
£84.77
  • RS Stock No. 259-622
  • Mfr. Part No. 279000 FAZ-D25/3N
Each
£176.87
Better World
  • RS Stock No. 211-2398
  • Mfr. Part No. M9F23232
Each
£87.84
Better World
  • RS Stock No. 201-2244
  • Mfr. Part No. A9DE6620
Each
£165.71
  • RS Stock No. 148-450
  • Mfr. Part No. 3VA5150-6EF41-0AA0
Each
£353.10
Better World
  • RS Stock No. 132-021
  • Mfr. Part No. 2CDS272001R0504 S202M-C50
Each
£60.38
  • RS Stock No. 826-2865
  • Mfr. Part No. 7829150
Each
£32.77
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