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

46579 Products showing for Fuses & Circuit Breakers

103 / 999+
In Stock
Eaton 100A British Standard Fuse, FEE, 690 V, 700 V, 71mm
  • RS Stock No. 156-9005
  • Mfr. Part No. 100FEE
Each
MYR716.21
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 2A Curve C, 440V AC, 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-2291
  • Mfr. Part No. A9F07202
Each
MYR605.56
Last RS stock
ABB RCCB, 10A, 2 Pole, 30mA, Type C, 240V ac
  • RS Stock No. 246-2379
  • Mfr. Part No. 2CCG001698R0001
Each
MYR1,305.05
Temporarily out of stock
WJ Furse Polypropylene Lightning Earth Clip Max. Conductor Size 25 x 3mm 457.2mm
  • RS Stock No. 124-2487
  • Mfr. Part No. 7TCA083550R0007 CP015
Each (In a Pack of 50)
MYR6.089
In Stock
Better World
Schneider Electric Multi 9 C60SP MCB, 4P, 20A Curve D, 440V AC, 15 kA Breaking Capacity
  • RS Stock No. 211-2407
  • Mfr. Part No. M9F23420
Each
MYR361.58
In Stock
Littelfuse PCB Mount Fuse Holder for ATO Fuse, 80V dc
  • RS Stock No. 894-9600
  • Mfr. Part No. 178.6164.0002
Each
MYR21.18
In Stock
Better World
Schneider Electric Acti 9 iC60L MCB, 1P, 6A Curve C, 15 kA Breaking Capacity
  • RS Stock No. 219-9264
  • Mfr. Part No. A9F94106
Each
MYR426.21
In Stock
ABB System Pro M Compact S200 M UC MCB, 2P, 63A Curve C, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 200-612
  • Mfr. Part No. 2CDS272061R0634
Each
MYR1,517.12
In Stock
Better World
Schneider Electric Multi 9 C60SP MCB, 1P, 3A Curve B, 415V AC, 60V DC, 20 kA Breaking Capacity
  • RS Stock No. 211-2328
  • Mfr. Part No. M9F21103
Each
MYR89.98
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 63A, Fixed Mount
  • RS Stock No. 260-9434
  • Mfr. Part No. C10F3TM063
Each
MYR3,058.18
In Stock
Siemens 50A Centred Tag Fuse, NH000, 690V ac
  • RS Stock No. 396-291
  • Mfr. Part No. 3NE1817-0
Each (In a Pack of 3)
MYR499.273
Temporarily out of stock
ABB, XT2N MCCB 3P 32A, Fixed Mount
  • RS Stock No. 237-6211
  • Mfr. Part No. 1SDA067013R1 XT2N 160 TMD 32A FF
Each
MYR1,817.06
Temporarily out of stock
Schurter SMD Non Resettable Fuse 500mA, 125 V dc, 250V ac
  • RS Stock No. 736-0734
  • Mfr. Part No. 3403.0163.24
Each (In a Pack of 10)
MYR3.572
In Stock
Electronic Circuit Breaker 2A 24V , 1 channels , DIN Rail
  • RS Stock No. 263-095
  • Mfr. Part No. PXS24E02A002 PXS24E-e2/F
Each
MYR197.45
In Stock
RS PRO 6.3A FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 420-195
Each (In a Pack of 10)
MYR11.684
In Stock
Bulgin 13A Base Mount Fuse Holder for 6.3 x 32mm Fuse, 250V ac
  • RS Stock No. 213-7564
  • Mfr. Part No. FX0326
Each (In a Pack of 5)
MYR22.068
In Stock
Schneider Electric Acti 9 Earth & Neutral Terminal Bar for use with Screw Support Busbar
  • RS Stock No. 187-807
  • Mfr. Part No. 99217
Each
MYR187.20
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 874-4275
  • Mfr. Part No. 3VA1163-4EF36-0AA0
Each
MYR1,493.82
In Stock
Siemens 4A F Cartridge Fuse, 10 x 38mm
  • RS Stock No. 203-2041
  • Mfr. Part No. 3NW6004-1
Each (In a Pack of 10)
MYR23.77
In Stock
Schneider Electric Easypact Cvs100...250, Nsx100...250 Dc DIN Rail Adapter for use with Compact Nsx 100/160/250
  • RS Stock No. 221-1184
  • Mfr. Part No. LV429305
Each
MYR802.79
1
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