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
Fuses - PCB
Fuses - PCB

46578 Products showing for Fuses & Circuit Breakers

204 / 999+
In Stock
Hager Electronic Circuit Breaker 16A MFS, 1 channels
  • RS Stock No. 251-2068
  • Mfr. Part No. MFS716
Each (In a Pack of 12)
MYR124.869
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 1.25kA IZMX/INX, 3 channels , Withdrawable
  • RS Stock No. 132-689
  • Mfr. Part No. 183728 IZMX40B3-V12W-1
Each
MYR36,737.21
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 1kA, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 209-5255
  • Mfr. Part No. 3VA2510-6HN42-0AA0
Each
MYR31,211.69
In Stock
ABB F200 RCCB, 100A, 4 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 225-6127
  • Mfr. Part No. 2CSF204101R1900 F204 A-100/0,03
Each
MYR1,732.17
Temporarily out of stock
Siemens 12A F Cartridge Fuse, 10 x 38mm
  • RS Stock No. 232-2028
  • Mfr. Part No. 3NW2120-0HG
Each (In a Pack of 10)
MYR111.618
Temporarily out of stock
ABB F204 RCCB, 40A, 4 Pole, 30mA
  • RS Stock No. 283-5901
  • Mfr. Part No. F204 A-40/0.03
Each
MYR1,109.90
In Stock
Eaton 1A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 458-8504
  • Mfr. Part No. KTK-1
Each (In a Pack of 5)
MYR78.462
In Stock
Mersen 10A British Standard Fuse, 17 x 27mm, 250V ac, 38 → 42.8mm
  • RS Stock No. 304-2669
  • Mfr. Part No. N076648
Each
MYR137.33
Temporarily out of stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 3P, 6A Curve C, 277V AC
  • RS Stock No. 256-6804
  • Mfr. Part No. M9F52306
Each
MYR1,665.28
Temporarily out of stock
Better World
ABB, XT2S MCCB 4P 25A, Fixed Mount
  • RS Stock No. 236-7516
  • Mfr. Part No. 1SDA067834R1 XT2S 160 Ekip LS/I 25A FF
Each
MYR4,209.52
In Stock
Mersen 160mA FA Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 188-6518
  • Mfr. Part No. F084001
Each (In a Pack of 10)
MYR32.897
In Stock
ETI 50A D02 Neozed Fuse, E18 Thread Size, gG, 400V ac
  • RS Stock No. 416-017
  • Mfr. Part No. 2212004
Each (In a Pack of 5)
MYR6.768
In Stock
ABB System Pro M Compact S200MUC MCB, 2P, 6A, Type Z, 440V AC, 440V DC, 25 kA Breaking Capacity
  • RS Stock No. 231-9736
  • Mfr. Part No. 2CDS272061R0378 S202 MUC Z 6A 10 KA
1 Box of 1
MYR1,468.91
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 25A, Fixed Mount
  • RS Stock No. 260-9412
  • Mfr. Part No. C10B4TM025
Each
MYR3,410.12
In Stock
ifm electronic Power Supply Module for use with Electronic Circuit Breaker
  • RS Stock No. 100-564
  • Mfr. Part No. DF1100
Each
MYR208.48
In Stock
ABB DDA202 RCD, 40A, 2 Pole, 30mA, 230V
  • RS Stock No. 231-9887
  • Mfr. Part No. 2CSB202001R1400 DDA202 AC-40/0.03
Each
MYR648.77
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-3795
  • Mfr. Part No. 3VA2216-5HL42-0AA0
Each
MYR7,342.96
In Stock
Eaton xEffect MCB, 3P, 32A Curve D, 240 → 415V AC, 96V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-7147
  • Mfr. Part No. 279001 FAZ-D32/3N
Each
MYR1,051.93
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 3.2kA Ekip G Hi-Touch LSIG, 4 channels
  • RS Stock No. 259-3785
  • Mfr. Part No. 1SDA071790R1
Each
MYR117,366.03
In Stock
Schneider Electric Motor Mechanism for use with ComPacT NSX New Generation
  • RS Stock No. 130-908
  • Mfr. Part No. LV432643
Each
MYR9,622.07
1
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