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

491 of 999+
  • RS Stock No. 120-982
  • Mfr. Part No. 168206 FRBDM-C25/2/003-G/A
Each
£164.16(exc. VAT)
  • RS Stock No. 229-111
  • Mfr. Part No. C14G6
1 Pack of 10
£16.40(exc. VAT)
Better World
  • RS Stock No. 178-8000
  • Mfr. Part No. LV426850
Each
£111.83(exc. VAT)
Better World
  • RS Stock No. 271-9614
  • Mfr. Part No. 3VA10802ED320AA0
Each
£160.76(exc. VAT)
  • RS Stock No. 787-4255P
  • Mfr. Part No. 1812L110/33MR
Each (Supplied on a Reel)
£0.469(exc. VAT)
  • RS Stock No. 231-9294
  • Mfr. Part No. 1SDA074167R1 EKIP 2K-1 E1.2..E6.2-Tmax
Each
£118.98(exc. VAT)
  • RS Stock No. 209-6565
  • Mfr. Part No. 5SP4491-8
Each
£518.27(exc. VAT)
  • RS Stock No. 922-7194
  • Mfr. Part No. 279137 FAZ-C6/2-DC
Each
£143.38(exc. VAT)
  • RS Stock No. 299-082
  • Mfr. Part No. 1SNF100031R0000
Each
£4.54(exc. VAT)
  • RS Stock No. 608-831
  • Mfr. Part No. 3NE4332-3
1 Pack of 3
£452.10(exc. VAT)
  • RS Stock No. 703-4081
  • Mfr. Part No. 5-5AMWNA3-0E
Each
£140.72(exc. VAT)
  • RS Stock No. 630-858
  • Mfr. Part No. C090507Q
1 Box of 10
£4.80(exc. VAT)
Better World
  • RS Stock No. 219-8875
  • Mfr. Part No. KBC10DCC211
Each (In a Pack of 10)
£14.471(exc. VAT)
  • RS Stock No. 117-422
  • Mfr. Part No. KV 3554
Each
£218.18(exc. VAT)
  • RS Stock No. 201-6874
  • Mfr. Part No. 2CSR255180R1205
Each
£176.81(exc. VAT)
  • RS Stock No. 127-769
  • Mfr. Part No. 183556 IZMX16H4-V10F-1
Each
£6,415.07(exc. VAT)
  • RS Stock No. 260-9424
  • Mfr. Part No. C10F3MA007
Each
£456.02(exc. VAT)
  • RS Stock No. 703-4072
  • Mfr. Part No. 5-5ABWNA5E
Each
£102.66(exc. VAT)
  • RS Stock No. 225-6081
  • Mfr. Part No. 2CSB204101R1250 DDA204 A-25/0.03
Each
£118.88(exc. VAT)
Better World
  • RS Stock No. 211-0400
  • Mfr. Part No. KBC16DCP1
Each
£126.43(exc. VAT)
Results per page