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

46580 Products showing for Fuses & Circuit Breakers

67 / 999+
In Stock
Better World
Siemens RCBO, 20A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, Sentron Range
  • RS Stock No. 243-6169
  • Mfr. Part No. 5SU1324-7FP20
Each
MYR1,416.43
In Stock
Eaton 35A DIII Bottle Fuse, 500V
  • RS Stock No. 228-741
  • Mfr. Part No. 35D33 FUSE-D3 35A T GL/GG 500VAC E33
1 Pack of 5
MYR59.08
Temporarily out of stock
Phoenix Contact 10A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 254-4865
  • Mfr. Part No. 3061334
Each (In a Pack of 10)
MYR64.837
In Stock
Socomec 32A Cartridge Fuse, 14 x 51mm
  • RS Stock No. 122-5275
  • Mfr. Part No. 60220032
Each (In a Pack of 10)
MYR10.317
In Stock
ABB System Pro M Compact S200 M UC MCB, 1P, 500mA Curve C, 230V AC, 220V DC, 10 kA Breaking Capacity
  • RS Stock No. 201-131
  • Mfr. Part No. 2CDS271061R0984
Each
MYR513.09
In Stock
Eaton 3 Phase Surge Protector, 15kA, 110 → 230 V dc, 110 → 415V ac, DIN Rail Mount
  • RS Stock No. 847-3677
  • Mfr. Part No. 102036 FAZ-XAA-NA110-415VAC
Each
MYR217.16
In Stock
Better World
Schneider Electric Multi 9 MCB, 1P, 5A Curve C, 10 kA Breaking Capacity
  • RS Stock No. 219-9116
  • Mfr. Part No. M9F22105
Each
MYR357.21
In Stock
ABB 36 Way Plastic Consumer Unit, 125A, IP65 Mistral65
  • RS Stock No. 811-1909
  • Mfr. Part No. 1SL1205A00 65P18X22
Each
MYR329.65
In Stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 2P, 15A Curve C, 277V AC
  • RS Stock No. 256-6800
  • Mfr. Part No. M9F52215
Each
MYR1,627.84
In Stock
Osram Surge Protector, 15A, 20kV, Screw Mount Mount
  • RS Stock No. 251-5285
  • Mfr. Part No. SPD-20-275-G2
Each
MYR83.31
In Stock
Eaton xPole PXL, S200 MCB, 1P, 16A Curve C, 400V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 486-805
  • Mfr. Part No. 236059 PXL-C16/1
Each
MYR48.25
Temporarily out of stock
Better World
Siemens SIRIUS Electronic Circuit Breaker 100A 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-050
  • Mfr. Part No. 3RV2041-4MA10-0DA0
Each
MYR2,677.45
In Stock
Better World
Schneider Electric 100 → 415 V ac, 110 → 130V dc Shunt Trip Shunt trip for use with ARA, ic60 MCB, IDPN
  • RS Stock No. 791-2806
  • Mfr. Part No. A9A26476
Each
MYR333.58
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 80A, Fixed Mount
  • RS Stock No. 260-7579
  • Mfr. Part No. C11E4TM080B
Each
MYR2,767.77
Temporarily out of stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 80A, Fixed Mount
  • RS Stock No. 254-6320
  • Mfr. Part No. C11H3TM080L
Each
MYR3,105.51
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 4P, 32A Curve C, 440V AC, 220 → 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3442
  • Mfr. Part No. A9F54432
Each
MYR1,185.01
Temporarily out of stock
Better World
ABB System Pro M Compact S200M MCB, 3P, 2A Curve C, 440V AC, 10 kA Breaking Capacity
  • RS Stock No. 535-4239
  • Mfr. Part No. 2CDS273001R0024 S203M-C2
Each
MYR390.60
Last RS stock
Siemens 10A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 395-513
  • Mfr. Part No. 3NC1010
Each (In a Pack of 10)
MYR98.179
In Stock
Siemens Fixing Bracket for use with Siemens PT Series Relays
  • RS Stock No. 758-6829
  • Mfr. Part No. LZS:PT17024
1 Bag of 10
MYR56.12
Temporarily out of stock
Legrand 125A Cartridge Fuse, 61 x 125mm, 500V
  • RS Stock No. 266-3183
  • Mfr. Part No. 0 165 50
1 Box of 3
MYR540.89
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