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

118 of 999+
In Stock
  • RS Stock No. 830-4243
  • Mfr. Part No. 8020.5018.G
Each (In a Pack of 10)
HK$7.08
Temporarily out of stock
Better World
  • RS Stock No. 156-644
  • Mfr. Part No. 3VA2216-5JP32-0AA0
Each
HK$18,496.80
Temporarily out of stock
Better World
  • RS Stock No. 209-6828
  • Mfr. Part No. 3VA1150-3EE46-0AA0
Each
HK$4,296.40
In Stock
  • RS Stock No. 776-1544
  • Mfr. Part No. 093.63
Each
HK$23.80
Temporarily out of stock
  • RS Stock No. 157-964
  • Mfr. Part No. 3VA9473-0QC00
Each
HK$983.50
Temporarily out of stock
  • RS Stock No. 246-2305
  • Mfr. Part No. 2CCF800219R0001
Each
HK$29.40
Temporarily out of stock
  • RS Stock No. 629-371
  • Mfr. Part No. 8GK6725-2KK23
Each
HK$1,905.12
In Stock
  • RS Stock No. 237-5098
  • Mfr. Part No. 2CSR254001R1164
Each
HK$2,368.00
In Stock
  • RS Stock No. 729-2726
  • Mfr. Part No. 1616-21-5A
Each
HK$241.86
Temporarily out of stock
  • RS Stock No. 249-106
  • Mfr. Part No. 3VA6610-5HL32-0AA0
Each
HK$50,474.90
In Stock
Better World
  • RS Stock No. 806-7405
  • Mfr. Part No. A9XPCM04
Each
HK$543.80
Temporarily out of stock
  • RS Stock No. 599-777
  • Mfr. Part No. HMB290
Each
HK$4,358.50
Temporarily out of stock
Better World
  • RS Stock No. 209-6013
  • Mfr. Part No. 5SY5263-7
Each
HK$2,422.90
In Stock
  • RS Stock No. 174-0730
  • Mfr. Part No. 01550900M
Each (In a Pack of 5)
HK$14.46
In Stock
  • RS Stock No. 111-7811
  • Mfr. Part No. SWTC-421-3535
Each (In a Pack of 10)
HK$14.27
Limited stock
  • RS Stock No. 124-5057
  • Mfr. Part No. A1-5AF
Each (In a Pack of 5)
HK$8.26
In Stock
Better World
  • RS Stock No. 238-4087
  • Mfr. Part No. A9XPP606
Each (In a Pack of 18)
HK$282.484
In Stock
  • RS Stock No. 893-0609
  • Mfr. Part No. 696212001002
Each (In a Pack of 5)
HK$12.00
In Stock
  • RS Stock No. 200-063
  • Mfr. Part No. 2CDS272061R0338
Each
HK$2,515.00
Temporarily out of stock
  • RS Stock No. 275-0417
  • Mfr. Part No. M39019/02-218
Each
HK$8,122.90
Results per page