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

154 of 999+
Temporarily out of stock
  • RS Stock No. 300-035
  • Mfr. Part No. 3NW7364
Each
HK$460.40
Temporarily out of stock
  • RS Stock No. 339-633
  • Mfr. Part No. SEA9BPN24M
Each
HK$20,530.50
In Stock
  • RS Stock No. 181-8556
  • Mfr. Part No. 10D27
1 Box of 25
HK$493.85
In Stock
  • RS Stock No. 738-3034P
  • Mfr. Part No. 025102.5MRT1L
Each (Supplied in a Bag)
HK$6.43
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  • RS Stock No. 202-7086
  • Mfr. Part No. 5SG5693
Each (In a Pack of 2)
HK$171.85
Temporarily out of stock
Better World
  • RS Stock No. 249-295
  • Mfr. Part No. 3VA6440-6HL31-2AA0
Each
HK$24,433.40
In Stock
  • RS Stock No. 122-9303
  • Mfr. Part No. 3400-P10-H-SI-10A
Each
HK$636.00
In Stock
Better World
  • RS Stock No. 236-7493
  • Mfr. Part No. 1SDA067768R1 XT2S 160 MA 80 FF
Each
HK$3,054.00
Temporarily out of stock
  • RS Stock No. 250-702
  • Mfr. Part No. 192366 NZMS3-PX250-BT
Each
HK$35,499.70
In Stock
Better World
  • RS Stock No. 243-6203
  • Mfr. Part No. 5SU1336-6FP10
Each
HK$1,551.90
In Stock
  • RS Stock No. 895-1735P
  • Mfr. Part No. 0476003.MR
Each (Supplied on a Reel)
HK$9.71
In Stock
  • RS Stock No. 610-9787
Each (In a Pack of 10)
HK$4.46
Being discontinued
  • RS Stock No. 174-7957
Each (In a Box of 500)
HK$1.792
Temporarily out of stock
Better World
  • RS Stock No. 155-818
  • Mfr. Part No. 3VA2325-8KQ32-0AA0
Each
HK$33,996.40
Temporarily out of stock
  • RS Stock No. 240-8954
  • Mfr. Part No. 3-1393250-2
Each (In a Bag of 100)
HK$51.169
Temporarily out of stock
  • RS Stock No. 262-732
  • Mfr. Part No. 35NHG0B
1 Pack of 3
HK$243.20
Temporarily out of stock
  • RS Stock No. 119-706
  • Mfr. Part No. KV ES 3
Each
HK$315.90
In Stock
  • RS Stock No. 852-7174
  • Mfr. Part No. MDL-8-R
Each
HK$14.10
Temporarily out of stock
  • RS Stock No. 212-340
  • Mfr. Part No. R9R26225
Each
HK$1,084.69
In Stock
  • RS Stock No. 178-4176
Each (In a Pack of 50)
HK$3.242
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