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

123 / 999+
In Stock
Mersen 10A Slow-Blow Ceramic Cartridge Fuse, 8.5 x 31.5mm
  • RS Stock No. 247-2929
  • Mfr. Part No. W201292
1 Box of 10
MYR74.81
In Stock
Mersen 5A FA Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 188-6675
  • Mfr. Part No. R084011
Each (In a Pack of 10)
MYR20.037
In Stock
Better World
Schneider Electric iID RCCB, 40A, 4 Pole, 300mA, Type AC, 415V ac
  • RS Stock No. 248-3696
  • Mfr. Part No. A9R15440
Each
MYR1,909.11
Temporarily out of stock
ABB, Formula DSA MCCB 1P 80A, Fixed Mount
  • RS Stock No. 237-6138
  • Mfr. Part No. 1SDA066693R1
Each
MYR858.36
In Stock
Littelfuse 60A Yellow BF1 Car Fuse, 32V dc
  • RS Stock No. 431-6719
  • Mfr. Part No. 153.5631.5601
Each (In a Pack of 5)
MYR18.456
In Stock
Mersen 25A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2931
  • Mfr. Part No. W212585
1 Box of 10
MYR210.43
In Stock
Schneider Electric Acti9 iC60 RCCB, 25A, 2 Pole, 300mA, Type C, 220 → 240V ac
  • RS Stock No. 110-284
  • Mfr. Part No. A9D50225
Each
MYR2,986.99
In Stock
Bourns 2.6A Resettable Fuse, 24V
  • RS Stock No. 817-1658
  • Mfr. Part No. MF-LSMF260X-2
Each (In a Pack of 10)
MYR4.079
Temporarily out of stock
Better World
Schneider Electric Busbar Tap-Off Unit with Circuit Breaker
  • RS Stock No. 219-8903
  • Mfr. Part No. KNB63SM412
Each
MYR2,940.85
Temporarily out of stock
Schneider Electric RCBO, 25A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Acti9 Range
  • RS Stock No. 339-788
  • Mfr. Part No. SEE125B03
Each
MYR854.22
Temporarily out of stock
Better World
Schneider Electric Busbar Tap-Off Unit with Circuit Breaker, Canalis KS Series
  • RS Stock No. 211-0506
  • Mfr. Part No. KSB400DC4
Each
MYR10,966.01
Temporarily out of stock
Eaton 32A Fuse Holder for 103 x 31 x 151mm Fuse, 1P, 690V ac
  • RS Stock No. 261-370
  • Mfr. Part No. RS32P
1 Pack of 10
MYR1,659.00
In Stock
Better World
Siemens, SENTRON MCCB 3P 250A, Breaking Capacity 55 kA
  • RS Stock No. 209-7030
  • Mfr. Part No. 3VA1225-5EF32-0AA0
Each
MYR4,477.43
In Stock
Socomec 160A Rail Mount Fuse Holder for 00 Fuse, 1P, 690V
  • RS Stock No. 233-3343
  • Mfr. Part No. 65001110
Each (In a Pack of 3)
MYR91.61
In Stock
ETA ESX10 Electronic Circuit breaker 10A 24V ESX10-T, 1 channels , Plug-In Mounting
  • RS Stock No. 210-2121
  • Mfr. Part No. ESX10-TA-100-DC24V-10A-E
Each
MYR669.29
Temporarily out of stock
Hager NEN MCB, 1P, 6A, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 602-147
  • Mfr. Part No. NEN106
Each
MYR281.35
In Stock
ABB RCBO, 6A Current Rating, 2P Poles, 30mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6951
  • Mfr. Part No. 2CSR255080R1065 DS201 B6 AC30
Each
MYR902.31
In Stock
RS PRO 6.3A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 247-4059
Each (In a Pack of 10)
MYR5.079
In Stock
RS PRO 12.5A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 209-9305
Each (In a Pack of 10)
MYR12.017
In Stock
Eaton RCD, 40A, 4 Pole, 30mA, Type A, 230/400V ac
  • RS Stock No. 922-8664
  • Mfr. Part No. 235439 PFIM-40/4/003-A-MW
Each
MYR1,112.46
1
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