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

274 / 999+
Temporarily out of stock
Schneider Electric PowerPact Thermal Magnetic Circuit Breaker - PowerPacT 3 Pole 525V Voltage Rating Clip-On, 30A
  • RS Stock No. 358-212
  • Mfr. Part No. BGL36030LU
Each
MYR5,412.68
In Stock
Littelfuse 60A Blue Blade Car Fuse, 32V dc
  • RS Stock No. 219-3592
  • Mfr. Part No. 0299060.TXN
Each (In a Pack of 10)
MYR10.095
In Stock
Eaton 10A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 181-8803
  • Mfr. Part No. C14M10
Each
MYR12.47
Temporarily out of stock
63A Tag Fuse, 440V ac
  • RS Stock No. 263-429
  • Mfr. Part No. XS63
1 Pack of 10
MYR1,755.83
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 250A, Fixed Mount
  • RS Stock No. 260-7905
  • Mfr. Part No. C25H32D250
Each
MYR12,018.36
In Stock
Better World
Schneider Electric RCBO, 10A Current Rating, 1P Poles, 30mA Trip Sensitivity, Resi9 Range
  • RS Stock No. 247-2230
  • Mfr. Part No. R9D01610
Each
MYR334.69
Temporarily out of stock
Siemens SENTRON 5SJ4145 MCB, 1P, 45A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 299-849
  • Mfr. Part No. 5SJ4145-8HG40
Each
MYR587.44
In Stock
Schneider Electric Acti9 Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 466-543
  • Mfr. Part No. A9XPH320
1 Pack of 5
MYR2,205.58
Temporarily out of stock
Better World
Schneider Electric, ComPacT NSX MCCB 4P 25A, Fixed Mount
  • RS Stock No. 254-6289
  • Mfr. Part No. C10F4TM025
Each
MYR3,754.39
Temporarily out of stock
ABB Tmax XT Terminal for use with Circuit Breaker
  • RS Stock No. 232-0234
  • Mfr. Part No. 1SDA066906R1 FC Cu XT1 4PCS
Each
MYR129.21
In Stock
Better World
Siemens SENTRON 5SY5 MCB, 2P, 2A Curve C, 10 kA Breaking Capacity
  • RS Stock No. 203-2182
  • Mfr. Part No. 5SY5202-7
Each
MYR758.55
Temporarily out of stock
Better World
Schneider Electric RCBO, 6A Current Rating, 1P Poles, 30mA Trip Sensitivity, Acti9 Range
  • RS Stock No. 201-2245
  • Mfr. Part No. A9DF3606
Each
MYR1,387.37
In Stock
Better World
Siemens SENTRON 5SL4 MCB, 3P, 6A Curve C, 400V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 209-6628
  • Mfr. Part No. 5SL4306-7
Each
MYR563.04
In Stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 2P, 2A Curve D, 277V AC
  • RS Stock No. 256-6815
  • Mfr. Part No. M9F53202
Each
MYR1,233.11
In Stock
Schneider Electric TransferPacT Electronic Circuit Breaker 63A TAA100, Fixed
  • RS Stock No. 272-7578
  • Mfr. Part No. TA10D2L0633TPE
Each
MYR10,531.92
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 1A Curve D, 253V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 527-9419
  • Mfr. Part No. 2CDS251001R0011 S201-D1
Each
MYR78.65
In Stock
Better World
Schneider Electric Acti 9 1 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2711
  • Mfr. Part No. A9XPH106
Each
MYR59.39
In Stock
Mersen 63A NH Fuse, NH00, 690V ac
  • RS Stock No. 448-3386
  • Mfr. Part No. V320155
Each
MYR406.45
Temporarily out of stock
Eaton xEffect MCB, 2P, 32A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3358
  • Mfr. Part No. 102174 FAZ-C32/2-NA
Each
MYR576.18
In Stock
ABB SN201 MCB, 1+N, 32A Curve C, 230V AC, 4.5 kA Breaking Capacity
  • RS Stock No. 186-3481
  • Mfr. Part No. 2CSS245202R0324
Each
MYR77.72
1
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