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

207 of 999+
  • RS Stock No. 192-0888
  • Mfr. Part No. 66809
Each
£371.24(exc. VAT)
  • RS Stock No. 252-909
  • Mfr. Part No. 20CML
1 Pack of 10
£38.04(exc. VAT)
  • RS Stock No. 255-537
  • Mfr. Part No. 259852 NZM3-XR380-440AC
Each
£1,224.49(exc. VAT)
Better World
  • RS Stock No. 238-3410
  • Mfr. Part No. A9P71606
Each
£32.68(exc. VAT)
  • RS Stock No. 767-5052
Each (In a Pack of 10)
£0.246(exc. VAT)
  • RS Stock No. 146-2818
  • Mfr. Part No. 187204 AFDD-16/2/B/003-A
Each
£180.63(exc. VAT)
  • RS Stock No. 256-560
  • Mfr. Part No. 3VA5330-6EF41-0AA0
Each
£1,780.62(exc. VAT)
  • RS Stock No. 232-0096
  • Mfr. Part No. 1SDA054441R1 T5S400 FF TMA 400A
Each
£1,271.96(exc. VAT)
  • RS Stock No. 188-6883
  • Mfr. Part No. N093346
Each (In a Pack of 10)
£4.179(exc. VAT)
  • RS Stock No. 173-9768
  • Mfr. Part No. 0034.6603
Each (In a Bag of 100)
£0.529(exc. VAT)
  • RS Stock No. 124-3000
  • Mfr. Part No. EAM4 EAM4
Each
£116.79(exc. VAT)
  • RS Stock No. 654-761
  • Mfr. Part No. SEA9BPN10AFD12
Each
£961.67(exc. VAT)
  • RS Stock No. 247-2941
  • Mfr. Part No. X1014573
1 Box of 10
£73.75(exc. VAT)
  • RS Stock No. 210-2107
  • Mfr. Part No. 3120-N554-P7T1-W02D-16A
Each
£23.85(exc. VAT)
  • RS Stock No. 337-1995
  • Mfr. Part No. 3101.0030
Each (In a Pack of 5)
£3.482(exc. VAT)
  • RS Stock No. 237-5179
  • Mfr. Part No. 2CSR273101R1255
Each
£281.48(exc. VAT)
Better World
  • RS Stock No. 746-7873
  • Mfr. Part No. 2CDS252001R0401 S202-D40
Each
£47.25(exc. VAT)
  • RS Stock No. 182-4154
Each (In a Pack of 5)
£3.094(exc. VAT)
  • RS Stock No. 161-7616
1 Bag of 1000
£437.01(exc. VAT)
  • RS Stock No. 237-6102
  • Mfr. Part No. 1SDA066596R1 KLC XT1 RONIS TYPE C
Each
£84.08(exc. VAT)
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