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

46596 Products showing for Fuses & Circuit Breakers

2 / 999+
Better World
ABB System Pro M Compact S200 MCB, 2P, 25A Curve C, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-7728
  • Mfr. Part No. 2CDS252001R0254 S202-C25
Each
MYR289.28
Eaton 32A Rail Mount Fuse Holder for F1 Fuse, 1P, 550V ac
  • RS Stock No. 418-495
  • Mfr. Part No. 32NNSF
Each
MYR45.25
Eaton 20A T Cartridge Fuse, 21 x 57mm
  • RS Stock No. 773-3542
  • Mfr. Part No. LPJ-20SP
Each
MYR340.38
Eaton 160A Rail Mount Fuse Holder for NH00 Fuse, 3P, 690V ac
  • RS Stock No. 182-1438
  • Mfr. Part No. TD00-DI
Each
MYR186.98
ABB RCBO, 32A Current Rating, 4P Poles, 30mA Trip Sensitivity, Type C
  • RS Stock No. 225-6146
  • Mfr. Part No. 2CSR256040R1324 DS203NC C32 AC30
Each
MYR986.33
RS PRO MCB, 2P, 16A Curve B, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 265-0160
Each
MYR110.25
Littelfuse 20A Yellow Blade Car Fuse, 32V dc
  • RS Stock No. 787-4136
  • Mfr. Part No. 0287020.PXCN
Each (In a Pack of 10)
MYR1.525
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 160A, Breaking Capacity 25kA, Fixed Mount
  • RS Stock No. 260-9756
  • Mfr. Part No. LV516303
Each
MYR3,283.98
RS PRO Residential RCCBs, 25A, 2 Pole, 300mA, Type A, 230V
  • RS Stock No. 284-2368
Each
MYR351.70
Better World
Schneider Electric, ComPacT NSX MCCB 3P 100A, Breaking Capacity 90 kA, Fixed Mount
  • RS Stock No. 254-6300
  • Mfr. Part No. C10N3TM100
Each
MYR3,189.95
WJ Furse Copper Earth Bar L. 475mm x W. 90mm x H. 96mm 6 Ways
  • RS Stock No. 124-2500
  • Mfr. Part No. 7TCA083670R0676 LK243-6
Each
MYR1,239.42
Lovato ModuLo P1MB MCB, 1P, 6A Curve B, 230V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 825-5551
  • Mfr. Part No. P1MB1PB06
Each
MYR102.19
Eaton RCCB, 40A, 2 Pole, 100mA, Type AC, 230V ac
  • RS Stock No. 227-0714
  • Mfr. Part No. 264281 PFGM-40/2/01
Each
MYR1,195.11
Mersen 6A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2927
  • Mfr. Part No. W085257
1 Box of 10
MYR1,304.77
Mersen 20A T Fibreglass Cartridge Fuse, 10 x 38mm
  • RS Stock No. 914-4376
  • Mfr. Part No. ATQR20
Each
MYR109.36
Siemens 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P, 690V ac
  • RS Stock No. 203-2048
  • Mfr. Part No. 3NW7013
Each
MYR62.19
Eaton xEffect MCB, 1P, 6A Curve D, 240V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-7033
  • Mfr. Part No. 278578 FAZ-D6/1
Each
MYR166.05
Selco Thermal Fuse +216°C 10 A, 250V ac
  • RS Stock No. 111-7811
  • Mfr. Part No. SWTC-421-3535
Each (In a Pack of 10)
MYR10.227
RS PRO Single Phase Industrial Surge Protector, 40kA, 1.25kV, DIN Rail Mount
  • RS Stock No. 101-797
Each
MYR308.28
Better World
Schneider Electric iID RCCB, 25A, 2 Pole, 30mA
  • RS Stock No. 734-9125
  • Mfr. Part No. A9R11225
Each
MYR905.97
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