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

47266 Products showing for Fuses & Circuit Breakers

17 of 999+
In Stock
  • RS Stock No. 111-7804
  • Mfr. Part No. SWTC-228-3535
Each (In a Pack of 10)
HK$13.99
Temporarily out of stock
  • RS Stock No. 263-407
  • Mfr. Part No. TIA10
1 Pack of 20
HK$2,123.30
Temporarily out of stock
  • RS Stock No. 339-825
  • Mfr. Part No. SEA9BPN12M
Each
HK$9,548.20
In Stock
Better World
  • RS Stock No. 211-0513
  • Mfr. Part No. KSB63SM48
Each
HK$1,331.20
In Stock
  • RS Stock No. 893-8546
Each
HK$487.20
In Stock
  • RS Stock No. 563-750
Each (In a Pack of 10)
HK$4.17
In Stock
  • RS Stock No. 101-798
Each
HK$706.70
Temporarily out of stock
  • RS Stock No. 246-2513
  • Mfr. Part No. 2CCS571001R1208
Each
HK$804.20
In Stock
Better World
  • RS Stock No. 202-7129
  • Mfr. Part No. 5SL6332-7
Each
HK$561.70
Temporarily out of stock
  • RS Stock No. 563-598
Each (In a Pack of 10)
HK$3.56
Last RS stock
  • RS Stock No. 725-8026
  • Mfr. Part No. 0213.250MXP
Each (In a Bag of 10)
HK$8.46
Temporarily out of stock
  • RS Stock No. 279-4112
  • Mfr. Part No. 787-1668/000-250
Each
HK$3,182.00
In Stock
  • RS Stock No. 412-914
  • Mfr. Part No. TDC10-4A
Each (In a Pack of 10)
HK$3.11
Temporarily out of stock
  • RS Stock No. 174-0275
  • Mfr. Part No. 01550120ZXU
Each (In a Box of 100)
HK$4.621
In Stock
  • RS Stock No. 229-072
  • Mfr. Part No. 2D27 FUSE-D2 2A T GL/GG 500VAC E27
1 Pack of 5
HK$81.50
In Stock
  • RS Stock No. 260-8090
  • Mfr. Part No. C40F32D400
Each
HK$32,856.90
In Stock
  • RS Stock No. 312-3796
  • Mfr. Part No. GB2DB08
Each
HK$495.30
In Stock
  • RS Stock No. 186-3456
  • Mfr. Part No. 2CSF202002R1400
Each
HK$725.20
Temporarily out of stock
  • RS Stock No. 203-821
  • Mfr. Part No. 2CDS271061R0427
Each
HK$966.04
Temporarily out of stock
  • RS Stock No. 173-7978
  • Mfr. Part No. 0031.2510
Each (In a Box of 25)
HK$123.988
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