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

49110 Products showing for Fuses & Circuit Breakers

37 of 999+
Better World
  • RS Stock No. 219-9139
  • Mfr. Part No. M9F22420
Each
SGD319.05(exc. GST)
  • RS Stock No. 144-4696
  • Mfr. Part No. MZN175
Each (In a Pack of 2)
SGD32.56(exc. GST)
  • RS Stock No. 174-0653
  • Mfr. Part No. 01550300Z
Each (In a Pack of 10)
SGD5.069(exc. GST)
  • RS Stock No. 541-3394
  • Mfr. Part No. 045101.5MRL
Each (In a Pack of 10)
SGD1.554(exc. GST)
  • RS Stock No. 189-5338
  • Mfr. Part No. G1062721 / CUS101
Each
SGD15.99(exc. GST)
  • RS Stock No. 232-0335
  • Mfr. Part No. 2CDL200001R5015 Ast 50/15
Each
SGD13.07(exc. GST)
  • RS Stock No. 201-6975
  • Mfr. Part No. 2CSR255080R3324 DS201 C32 AC300
Each
SGD184.87(exc. GST)
  • RS Stock No. 541-3243
  • Mfr. Part No. 0251.250HAT1L
Each (In a Pack of 10)
SGD1.793(exc. GST)
  • RS Stock No. 415-187
  • Mfr. Part No. TIA32M35
Each (In a Pack of 5)
SGD21.784(exc. GST)
  • RS Stock No. 270-2252
  • Mfr. Part No. 1506951
Each
SGD28.20(exc. GST)
Better World
  • RS Stock No. 132-009
  • Mfr. Part No. 2CDS272001R0024 S202M-C2
Each
SGD107.47(exc. GST)
Better World
  • RS Stock No. 236-6736
  • Mfr. Part No. 1SDA068393R1 XT4L 160 TMA 125A FF
Each
SGD2,007.50(exc. GST)
  • RS Stock No. 183-3765
  • Mfr. Part No. 1SPE007714F0131
Each
SGD46.28(exc. GST)
  • RS Stock No. 337-5234
  • Mfr. Part No. FHAC0002LXN
Each (In a Pack of 5)
SGD10.626(exc. GST)
  • RS Stock No. 254-927
  • Mfr. Part No. 259832 NZM2-XR208-240AC
Each
SGD1,662.66(exc. GST)
Better World
  • RS Stock No. 260-9805
  • Mfr. Part No. LV563510
Each
SGD1,787.35(exc. GST)
  • RS Stock No. 627-151
  • Mfr. Part No. 3NC1405
1 Pack of 10
SGD181.56(exc. GST)
  • RS Stock No. 273-2293
  • Mfr. Part No. 140MT-C-M3
Each
SGD21.16(exc. GST)
  • RS Stock No. 914-4409
  • Mfr. Part No. ATMR10
Each
SGD22.74(exc. GST)
  • RS Stock No. 247-4059
Each (In a Pack of 10)
SGD1.469(exc. GST)
Results per page