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

24 of 999+
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  • Mfr. Part No. 2311403
Each (In a Pack of 5)
HK$9.32
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  • RS Stock No. 231-9337
  • Mfr. Part No. 1SDA100415R1 XT5S 400 TMA 400-4000 3pFF
Each
HK$11,097.71
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  • RS Stock No. 395-711
  • Mfr. Part No. 3NG1402
Each
HK$602.90
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  • RS Stock No. 170-3786
  • Mfr. Part No. 0712217
Each (In a Box of 20)
HK$127.035
Temporarily out of stock
  • RS Stock No. 237-6033
  • Mfr. Part No. 1SDA066269R1 R FP XT1 4PCS
Each
HK$831.11
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  • RS Stock No. 161-1833
  • Mfr. Part No. 9005805.160
Each
HK$45.60
Temporarily out of stock
  • RS Stock No. 218-1829
  • Mfr. Part No. 3VA9253-0JC22
Each
HK$752.40
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Better World
  • RS Stock No. 196-3611
  • Mfr. Part No. 5SU13531KL10
Each
HK$1,708.30
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  • RS Stock No. 831-9163
  • Mfr. Part No. 1SDA067414R1 XT1N 160 TMD 63-630 3p F F
Each
HK$2,390.10
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Better World
  • RS Stock No. 790-8879
  • Mfr. Part No. A9F44163
Each
HK$237.90
Temporarily out of stock
  • RS Stock No. 178-1168
  • Mfr. Part No. D239134 / BNEUTRALF1
Each (In a Pack of 10)
HK$17.799
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  • RS Stock No. 276-8964
  • Mfr. Part No. R9M60
Each
HK$995.58
In Stock
  • RS Stock No. 242-1049
Each (In a Pack of 5)
HK$25.24
Temporarily out of stock
  • RS Stock No. 272-0177
  • Mfr. Part No. 3VA1563-6MH32-0AA0
Each
HK$25,330.00
Being discontinued
  • RS Stock No. 270-3146
  • Mfr. Part No. Y233448
Each (In a Box of 10)
HK$5.63
Temporarily out of stock
  • RS Stock No. 210-6948
  • Mfr. Part No. 3NA7830-6
Each (In a Pack of 3)
HK$267.20
Temporarily out of stock
  • RS Stock No. 260-7991
  • Mfr. Part No. C25R4TM250
Each
HK$29,434.33
Temporarily out of stock
  • RS Stock No. 260-7677
  • Mfr. Part No. C12B4TM160B
Each
HK$9,559.36
New product - Preorder today
  • RS Stock No. 654-618
  • Mfr. Part No. C11N6TM100L
Each
HK$6,287.02
In Stock
Better World
  • RS Stock No. 188-4687
  • Mfr. Part No. DF101
Each
HK$51.60
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