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

147 / 999+
Temporarily out of stock
Eaton 150A Tan Blade Car Fuse, 32 V ac, 80 Vdc
  • RS Stock No. 849-5853
  • Mfr. Part No. ANL-150
Each (In a Pack of 5)
MYR612.572
In Stock
Socomec 6A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 122-5264
  • Mfr. Part No. 60120006
Each (In a Pack of 10)
MYR5.86
Temporarily out of stock
Lovato ModuLo P1MB MCB, 2P, 6A Curve C, 230V AC, 80V DC, 10 kA Breaking Capacity
  • RS Stock No. 825-5712
  • Mfr. Part No. P1MB2PC06
Each
MYR275.90
In Stock
Eaton 1A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1442
  • Mfr. Part No. S501-1-R
Each (In a Pack of 10)
MYR1.297
Temporarily out of stock
Better World
ABB, XT3S MCCB 4P 200A, Fixed Mount
  • RS Stock No. 236-6647
  • Mfr. Part No. 1SDA068227R1 XT3S 250 TMD 200A 3P+N FF
Each
MYR5,228.97
In Stock
Better World
Siemens SENTRON 3VA9 Wire Connector for use with 3VA1 100/160
  • RS Stock No. 218-1782
  • Mfr. Part No. 3VA9113-0JB11
Each
MYR217.33
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 2P, 20A Curve K, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 200-151
  • Mfr. Part No. 2CDS272001R0487
Each
MYR1,427.62
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 800A, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 341-271
  • Mfr. Part No. C080H45AFM
Each
MYR68,627.10
Limited stock
Allen Bradley 1492 1492-SPM MCB, 1P, 6A Curve C, 277V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 125-1456
  • Mfr. Part No. 1492-SPM1C060
Each
MYR560.86
In Stock
Better World
Schneider Electric Earthing Strap Tinned Copper 160 x 10mm Diameter
  • RS Stock No. 219-9706
  • Mfr. Part No. NSYEL166D6
Each (In a Pack of 10)
MYR17.424
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
Legrand 10A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 266-3070
  • Mfr. Part No. 0 102 96
1 Box of 10
MYR86.86
Limited stock
Hager 2 Phase Busbar
  • RS Stock No. 144-4830
  • Mfr. Part No. KB263A
Each
MYR136.06
Temporarily out of stock
ABB System Pro M Compact SU200 MR Circuit Breaker, 3P, 40A Curve K, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 200-217
  • Mfr. Part No. 2CDS273347R0557
Each
MYR5,251.42
Temporarily out of stock
Better World
Siemens Sentron 5SY4 MCB, 1+N, 32A Curve B, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1460
  • Mfr. Part No. 5SY4532-6
Each
MYR424.56
In Stock
Littelfuse PCB Mount Fuse Holder for Mini Fuse, 125V ac
  • RS Stock No. 787-4369
  • Mfr. Part No. 178.6764.0001
Each
MYR16.70
In Stock
RS PRO 20A Yellow Blade Car Fuse, 32V dc
  • RS Stock No. 563-762
Each (In a Pack of 10)
MYR2.228
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 250A, Fixed Mount
  • RS Stock No. 260-7901
  • Mfr. Part No. C25F4TM250
Each
MYR11,435.12
In Stock
ABB DDA200 RCD, 63A, 4 Pole, 30mA
  • RS Stock No. 225-6082
  • Mfr. Part No. 2CSB204101R1630 DDA204 A-63/0.03
Each
MYR1,212.34
In Stock
ETI 50A DIII Bottle Fuse, E33 Thread Size, gG - gL, 500V ac
  • RS Stock No. 768-6106
  • Mfr. Part No. 2313402
Each (In a Pack of 5)
MYR14.046
1
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