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.

Circuit Breakers
Circuit Breakers
Earth & Lightning Protection
Earth & Lightning Protection
Fuse Holders & Accessories
Fuse Holders & Accessories
Fuses
Fuses
Fuses - PCB
Fuses - PCB

50687 Products showing for Fuses & Circuit Breakers

13 of 999+
  • RS stock no. 797-6030
  • Mfr. Part No. SF 229 R
Each (In a Pack of 10)
R 19.666(exc. VAT)
  • RS stock no. 186-3475
  • Mfr. Part No. 2CSS245102R0404 SN201 L C40-L
Each
R 526.35(exc. VAT)
  • RS stock no. 787-4110P
  • Mfr. Part No. 0287001.PXCN
Each (Supplied in a Bag)
R 6.469(exc. VAT)
  • RS stock no. 563-643
Each (In a Pack of 10)
R 1.397(exc. VAT)
  • RS stock no. 144-4950
  • Mfr. Part No. MJT716
Each
R 643.85(exc. VAT)
  • RS stock no. 247-1920
  • Mfr. Part No. A9A15216
Each
R 1,765.49(exc. VAT)
  • RS stock no. 769-4570
  • Mfr. Part No. 239031 FAZ6-C2/1
Each
R 729.40(exc. VAT)
Better World
  • RS stock no. 196-3628
  • Mfr. Part No. 5SY6206-7
Each
R 1,188.07(exc. VAT)
  • RS stock no. 210-6934
  • Mfr. Part No. 3NA7801-6
Each (In a Pack of 3)
R 709.287(exc. VAT)
Better World
  • RS stock no. 790-9213
  • Mfr. Part No. A9D31820
Each
R 3,809.60(exc. VAT)
  • RS stock no. 610-9989
Each (In a Pack of 10)
R 9.739(exc. VAT)
  • RS stock no. 265-533
  • Mfr. Part No. 8UC7414-1BB44
Each
R 4,971.18(exc. VAT)
  • RS stock no. 269-3815
  • Mfr. Part No. 3101.0310
Each
R 56.37(exc. VAT)
  • RS stock no. 563-615
Each (In a Pack of 10)
R 9.19(exc. VAT)
  • RS stock no. 225-5923
  • Mfr. Part No. 2CCF019603R0001 S802PV-SP40 - 5 kA
Each
R 5,263.01(exc. VAT)
  • RS stock no. 254-6287
  • Mfr. Part No. C10F4
Each
R 7,032.77(exc. VAT)
  • RS stock no. 703-8746
  • Mfr. Part No. 315NHG2B
Each
R 443.74(exc. VAT)
  • RS stock no. 782-7931
  • Mfr. Part No. W57-XB7A4A10-15
Each
R 69.11(exc. VAT)
  • RS stock no. 337-7993
  • Mfr. Part No. 155.0892.6301
Each
R 234.14(exc. VAT)
  • RS stock no. 339-341
  • Mfr. Part No. SLA3000M
Each
R 30,646.35(exc. VAT)
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