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

46578 Products showing for Fuses & Circuit Breakers

158 / 999+
Temporarily out of stock
Hager RCD, 40A, 3 Pole, 30mA
  • RS Stock No. 144-4846
  • Mfr. Part No. BDC340F
Each
MYR1,886.16
In Stock
Okaya Electric Industries 1 Phase Surge Protector, 5kA, Surface Mount Mount
  • RS Stock No. 190-2015
  • Mfr. Part No. LV275DI-Q4
Each
MYR178.34
In Stock
Siemens SENTRON Connection Unit for use with Circuit Breaker Busbar
  • RS Stock No. 269-8414
  • Mfr. Part No. 8US1261-5MS13
Each
MYR439.09
In Stock
Legrand DX Range DX3 MCB, 2P, 32A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 731-9714
  • Mfr. Part No. 4 077 87
Each
MYR581.00
In Stock
Socomec 10A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 122-5265
  • Mfr. Part No. 60120010
Each (In a Pack of 10)
MYR5.667
In Stock
Hager Push Button Circuit Trip for use with Modular Devices
  • RS Stock No. 144-4651
  • Mfr. Part No. SVN332
Each
MYR242.70
Temporarily out of stock
Hager RCBO, 25A Current Rating, 4P Poles, 30mA Trip Sensitivity, Type A
  • RS Stock No. 602-207
  • Mfr. Part No. ADM475C
Each
MYR2,684.29
Temporarily out of stock
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-288
  • Mfr. Part No. KV PC 9103
Each
MYR231.70
In Stock
Better World
ABB, Tmax XT MCCB 3P 160A, Fixed Mount
  • RS Stock No. 236-6626
  • Mfr. Part No. 1SDA068167R1 XT2V 160 BLOC FF
Each
MYR2,538.25
Temporarily out of stock
RS PRO 15A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 177-8053
Each (In a Box of 500)
MYR4.251
In Stock
Hager 6A Cartridge Fuse, 14 x 51mm
  • RS Stock No. 250-8619
  • Mfr. Part No. LF406G
Each (In a Pack of 10)
MYR25.507
Being discontinued
Eaton 15A Ceramic Cartridge Fuse, 23 x 57mm
  • RS Stock No. 181-8636
  • Mfr. Part No. 15KR85
Each
MYR46.03
Temporarily out of stock
Better World
Schneider Electric Acti 9 iC60H MCB, 63A Curve B, 230V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-2247
  • Mfr. Part No. A9F06663
Each
MYR680.11
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX100/160/250
  • RS Stock No. 260-9389
  • Mfr. Part No. C104TM063
Each
MYR1,137.87
In Stock
Eaton xEffect MCB, 2P, 32A Curve B
  • RS Stock No. 230-0910
  • Mfr. Part No. 239091 FAZ6-B32/2
Each
MYR317.20
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 4P 630A, Breaking Capacity 50kA
  • RS Stock No. 260-9806
  • Mfr. Part No. LV563511
Each
MYR15,295.03
Temporarily out of stock
Better World
Schneider Electric 80A F Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 211-2289
  • Mfr. Part No. DF2FN80
Each (In a Pack of 10)
MYR147.50
Temporarily out of stock
ABB AC Switch Disconnectors Accessories Phase Barrier for use with Low-Voltage Switch Technology
  • RS Stock No. 259-9697
  • Mfr. Part No. 1SCA100768R1001
Each
MYR481.69
In Stock
TE Connectivity Thermal Circuit Breaker - W58 Single Pole 50 V dc, 250V ac Voltage Rating, 30A Current Rating
  • RS Stock No. 782-0918
  • Mfr. Part No. W58-XB1A4A-30
Each
MYR41.93
In Stock
Better World
Schneider Electric iID RCCB, 40A, 4 Pole, 30mA
  • RS Stock No. 776-3708
  • Mfr. Part No. A9R31440
Each
MYR1,849.53
1
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