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

27 of 999+
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Each
HK$8.80
Temporarily out of stock
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  • Mfr. Part No. 1SDA072880R1
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HK$103,582.97
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  • RS Stock No. 466-0527
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HK$696.10
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  • RS Stock No. 267-1856
1 Kit
HK$1,311.40
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  • Mfr. Part No. 2CCG001241R0001
Each
HK$2,000.30
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HK$481.80
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HK$2,563.40
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Better World
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Each
HK$1,888.20
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Each
HK$995.58
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  • Mfr. Part No. EMBH132 EMBH132
Each
HK$213.60
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  • Mfr. Part No. C10G1
Each (In a Pack of 10)
HK$14.18
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Each
HK$6,132.50
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  • RS Stock No. 541-3906
  • Mfr. Part No. 0218.050MXP
Each (In a Pack of 10)
HK$11.68
Temporarily out of stock
  • RS Stock No. 207-2775
  • Mfr. Part No. 2907865
Each
HK$2,199.80
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  • RS Stock No. 203-2032
  • Mfr. Part No. 3NA3824-6
Each (In a Pack of 3)
HK$250.60
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  • RS Stock No. 787-4249P
  • Mfr. Part No. 01020071Z
Each (Supplied in a Bag)
HK$1.48
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  • RS Stock No. 703-2827
  • Mfr. Part No. 8601.2005.08
Each (In a Bag of 10)
HK$11.49
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  • RS Stock No. 232-0237
  • Mfr. Part No. 1SDA067058R1 XT2N 160 Ekip LS/I 160A FF
Each
HK$6,061.10
Temporarily out of stock
  • RS Stock No. 174-0266
  • Mfr. Part No. 01550900M
1 Box of 1000
HK$10,676.90
In Stock
Better World
  • RS Stock No. 790-8850
  • Mfr. Part No. A9F44106
Each
HK$273.40
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