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

180 of 999+
Temporarily out of stock
  • RS Stock No. 217-6378
  • Mfr. Part No. 2800891
Each
HK$745.60
In Stock
  • RS Stock No. 541-3423P
  • Mfr. Part No. 0451004.MRL
Each (Supplied on a Reel)
HK$6.02
Temporarily out of stock
Better World
  • RS Stock No. 270-4742
  • Mfr. Part No. 3VA2163-7HM42-0AA0
Each
HK$13,061.80
Temporarily out of stock
  • RS Stock No. 225-5433
  • Mfr. Part No. 3NW7523-0HG
Each (In a Pack of 6)
HK$389.55
Temporarily out of stock
  • RS Stock No. 881-8262
  • Mfr. Part No. 1689336
Each (In a Box of 10)
HK$30.04
In Stock
  • RS Stock No. 537-5652
  • Mfr. Part No. 259754 NZM2/3-XA24AC/DC
Each
HK$948.40
Temporarily out of stock
  • RS Stock No. 140-277
  • Mfr. Part No. 2CCS863001R1597
Each
HK$9,944.39
Temporarily out of stock
Better World
  • RS Stock No. 270-3916
  • Mfr. Part No. 3VA2063-8KQ46-0AA0
Each
HK$22,400.20
In Stock
  • RS Stock No. 537-821
  • Mfr. Part No. R9J02063
1 Pack of 10
HK$1,417.30
Temporarily out of stock
  • RS Stock No. 285-5300
  • Mfr. Part No. 2764180000
Each
HK$3,847.50
Temporarily out of stock
  • RS Stock No. 121-250
  • Mfr. Part No. 168253 FRBDM-C10/1N/001-G/A
Each
HK$1,684.12
Temporarily out of stock
Better World
  • RS Stock No. 209-7509
  • Mfr. Part No. 5SV6016-6GV10
Each (In a Pack of 12)
HK$1,553.933
Temporarily out of stock
  • RS Stock No. 266-508
  • Mfr. Part No. 8US1921-1BA02
1 Pack of 6
HK$1,495.30
In Stock
Better World
  • RS Stock No. 238-3358
  • Mfr. Part No. A9DX2640
Each
HK$4,020.82
Temporarily out of stock
Better World
  • RS Stock No. 248-3693
  • Mfr. Part No. A9R11480
Each
HK$4,124.70
In Stock
  • RS Stock No. 270-3079
  • Mfr. Part No. M214670
Each
HK$210.78
Temporarily out of stock
  • RS Stock No. 191-4192
  • Mfr. Part No. SF-2410HI075T-2
Each (On a Reel of 1000)
HK$5.215
Temporarily out of stock
  • RS Stock No. 627-019
  • Mfr. Part No. 3NW8104-1
1 Pack of 10
HK$544.90
Temporarily out of stock
  • RS Stock No. 341-524
  • Mfr. Part No. C6PFM
Each
HK$72,813.79
Temporarily out of stock
  • RS Stock No. 339-346
  • Mfr. Part No. SEA9BN16PS
Each
HK$4,987.60
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