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

201 of 999+
Temporarily out of stock
Schneider Electric RCBO, 32A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Acti9 Range
  • RS Stock No. 654-746
  • Mfr. Part No. A9DH3632
Each
HK$2,998.80
Temporarily out of stock
Siemens 30A Fuse Holder for Class Jmm Fuse, 1P, 600V
  • RS Stock No. 627-082
  • Mfr. Part No. 3NW7511-3HG
1 Pack of 6
HK$1,629.80
In Stock
Socomec 4A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 122-5263
  • Mfr. Part No. 60120004
Each (In a Pack of 10)
HK$10.23
In Stock
Eaton 30A Rail Mount Fuse Holder for 10 x 38mm Fuse, 3P, 600V ac
  • RS Stock No. 182-1446
  • Mfr. Part No. CHCC3DU
Each (In a Box of 4)
HK$897.825
In Stock
Schurter 10A PCB Mount Fuse Holder for 5 x 20 mm, 6.3 x 32 mm Fuse, 500V ac
  • RS Stock No. 173-9891
  • Mfr. Part No. 0031.8231
Each (In a Box of 100)
HK$10.528
In Stock
Schurter 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 867-4356
  • Mfr. Part No. 3101.0031
Each (In a Pack of 10)
HK$23.97
In Stock
Eaton 10A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 250V ac
  • RS Stock No. 233-0583
  • Mfr. Part No. BK1-HTJ-606I
Each (In a Pack of 10)
HK$33.75
In Stock
Eaton 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 2P, 1.5kV
  • RS Stock No. 181-8702
  • Mfr. Part No. CHPV2U
Each
HK$868.60
Temporarily out of stock
16A Fuse Holder for 36 x 71 x 81mm Fuse, 3P, 400V
  • RS Stock No. 262-604
  • Mfr. Part No. TFRN01C
1 Pack of 5
HK$1,220.40
Temporarily out of stock
32A Fuse Holder for 10 x 38mm Fuse, 3P, 690V
  • RS Stock No. 262-616
  • Mfr. Part No. CHM3DNU
1 Pack of 3
HK$942.00
Temporarily out of stock
Eaton 3A Cartridge Fuse, 0.41 x 1.5in, 600V ac
  • RS Stock No. 261-723
  • Mfr. Part No. FNQ-R-3
1 Pack of 10
HK$5,921.50
In Stock
WAGO 32A Fuse Holder for 10 x 38mm Fuse, 1P, 24V dc
  • RS Stock No. 279-1650
  • Mfr. Part No. 811-314
Each
HK$225.40
Temporarily out of stock
Siemens 2A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 627-089
  • Mfr. Part No. 3NC1202-0MK
1 Pack of 20
HK$2,183.30
Temporarily out of stock
Better World
Schneider Electric Busbar Tap-Off Unit
  • RS Stock No. 219-8901
  • Mfr. Part No. KNB32CP
Each
HK$1,911.10
Temporarily out of stock
Legrand 160A NH Fuse, NH0, 500V ac
  • RS Stock No. 255-2142
  • Mfr. Part No. 016555
1 Box of 3
HK$959.14
Temporarily out of stock
Better World
Schneider Electric 690V ac Circuit Trip for use with Compact NSX 100 Circuit Breakers
  • RS Stock No. 212-0228
  • Mfr. Part No. LV429047
Each
HK$1,092.00
In Stock
WJ Furse Copper Earth Bar L. 900mm x W. 90mm x H. 96mm 12 Ways
  • RS Stock No. 124-2507
  • Mfr. Part No. 7TCA083670R0605 LK207-12
Each
HK$2,884.50
In Stock
Eaton 100A Rail Mount Fuse Holder
  • RS Stock No. 418-669
  • Mfr. Part No. RS100LOCK
Each (In a Pack of 3)
HK$1,178.30
In Stock
Littelfuse 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 787-4429P
  • Mfr. Part No. 03455LS1H
Each (Supplied in a Bag)
HK$42.90
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-316
  • Mfr. Part No. 3VA6140-6KP41-2AA0
Each
HK$26,030.20
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