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

19 of 999+
In Stock
  • RS Stock No. 270-3097
  • Mfr. Part No. Q206071
Each (In a Box of 10)
HK$6.378
Temporarily out of stock
  • RS Stock No. 192-0870
  • Mfr. Part No. 1SDA066278R1
Each
HK$558.84
Limited stock
Better World
  • RS Stock No. 776-2118
  • Mfr. Part No. A9F06210
Each
HK$489.10
In Stock
  • RS Stock No. 448-3336
  • Mfr. Part No. X320065
Each
HK$568.38
Temporarily out of stock
  • RS Stock No. 232-2280
  • Mfr. Part No. 5SP4391-7
Each
HK$2,696.30
In Stock
Better World
  • RS Stock No. 236-6581
  • Mfr. Part No. 1SDA068066R1 XT3N 250 TMD 250A 3P+N FF
Each
HK$9,134.70
In Stock
  • RS Stock No. 144-1834
  • Mfr. Part No. 0031.9161
Each
HK$152.70
In Stock
  • RS Stock No. 261-964
  • Mfr. Part No. RS20H
1 Pack of 10
HK$2,111.60
In Stock
  • RS Stock No. 783-3295
  • Mfr. Part No. 70-007-65/0.63A
Each (In a Pack of 10)
HK$3.46
In Stock
  • RS Stock No. 311-0021
  • Mfr. Part No. HTC-50M
Each (In a Pack of 5)
HK$31.50
In Stock
  • RS Stock No. 279-6766
Each (In a Pack of 10)
HK$3.037
Temporarily out of stock
  • RS Stock No. 237-6019
  • Mfr. Part No. 1SDA062746R1 T7S 1000A PR231-LS/I FF
Each
HK$29,947.80
In Stock
  • RS Stock No. 229-183
  • Mfr. Part No. C10M6 CYLINDRICAL FUSE 10 x 38 6A AM 500V AC
1 Pack of 10
HK$126.40
In Stock
Better World
  • RS Stock No. 791-3537
  • Mfr. Part No. A9F55232
Each
HK$628.90
In Stock
  • RS Stock No. 852-7134
  • Mfr. Part No. HVI-HH-R
Each
HK$34.90
Temporarily out of stock
Better World
  • RS Stock No. 211-2461
  • Mfr. Part No. M9F43340
Each
HK$1,610.00
Temporarily out of stock
  • RS Stock No. 136-0588
  • Mfr. Part No. G1017204 / FR14GR69V25
Each
HK$169.70
Temporarily out of stock
  • RS Stock No. 225-5425
  • Mfr. Part No. 3NW7211
Each
HK$439.60
Temporarily out of stock
  • RS Stock No. 119-361
  • Mfr. Part No. 13157M
Each
HK$3,894.69
In Stock
Better World
  • RS Stock No. 734-9646
  • Mfr. Part No. A9F75202
Each
HK$1,125.70
Results per page