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

47265 Products showing for Fuses & Circuit Breakers

2307 of 999+
Temporarily out of stock
Better World
  • RS Stock No. 243-6253
  • Mfr. Part No. 5SU1674-7DK82
Each
HK$32,661.30
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  • RS Stock No. 259-3315
  • Mfr. Part No. 1SDA071223R1
Each
HK$240,004.88
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Better World
  • RS Stock No. 209-6474
  • Mfr. Part No. 5SL4225-8
Each
HK$875.00
Temporarily out of stock
  • RS Stock No. 252-2179
Each (In a Pack of 50)
HK$1.781
In Stock
  • RS Stock No. 521-2668
Each
HK$125.10
Being discontinued
  • RS Stock No. 563-491
Each (In a Pack of 10)
HK$2.62
Temporarily out of stock
Better World
  • RS Stock No. 282-6251
  • Mfr. Part No. PV-500A-3L-BU-15
Each
HK$4,754.35
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  • RS Stock No. 181-8720
  • Mfr. Part No. 63D33
Each
HK$276.50
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  • RS Stock No. 213-1324
  • Mfr. Part No. 5SD7468-1
Each
HK$770.30
Temporarily out of stock
  • RS Stock No. 200-313
  • Mfr. Part No. 2CDS383001R0187
Each
HK$3,910.58
Temporarily out of stock
  • RS Stock No. 175-9929
  • Mfr. Part No. 2CSA255901R9165 S-ARC1 B16
Each
HK$1,810.84
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  • RS Stock No. 738-2832
  • Mfr. Part No. 0215012.TXP
Each (In a Pack of 10)
HK$15.33
Temporarily out of stock
Better World
  • RS Stock No. 219-8864
  • Mfr. Part No. KBB40ABG44W
Each
HK$1,673.43
Temporarily out of stock
  • RS Stock No. 247-513
  • Mfr. Part No. 168859 BB-EVP-16/N-1,5MU
Each
HK$462.90
Temporarily out of stock
  • RS Stock No. 202-911
  • Mfr. Part No. 2CDS272061R0164
Each
HK$1,813.14
Temporarily out of stock
  • RS Stock No. 260-8187
  • Mfr. Part No. C6342D630
Each
HK$21,510.91
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  • RS Stock No. 129-396
  • Mfr. Part No. 142509 FAZT-B32/1N
Each
HK$735.49
Temporarily out of stock
  • RS Stock No. 270-4889
  • Mfr. Part No. 3VA2612-6HN32-0AA0
Each
HK$113,229.30
In Stock
  • RS Stock No. 630-870
  • Mfr. Part No. F090533Q
1 Box of 10
HK$67.34
Temporarily out of stock
  • RS Stock No. 602-261
  • Mfr. Part No. MMN213
Each
HK$2,862.50
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