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

299 / 999+
Temporarily out of stock
RS PRO 60A Ceramic Cartridge Fuse, 15 x 22mm
  • RS Stock No. 188-4498
Each (In a Box of 320)
MYR58.946
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 630A, Fixed Mount
  • RS Stock No. 260-8263
  • Mfr. Part No. C63W42D630
Each
MYR33,224.55
In Stock
Eaton 2A British Standard Fuse, 14 x 55mm, 550V ac, 44.5mm
  • RS Stock No. 413-260
  • Mfr. Part No. NITD2
Each (In a Pack of 5)
MYR23.468
Temporarily out of stock
ABB Residual Current Release for use with Four-Pole XT1
  • RS Stock No. 192-0912
  • Mfr. Part No. 1SDA067125R1
Each
MYR4,942.78
Temporarily out of stock
Europa 3 Phase Distribution Board, 30 Way, 125 A
  • RS Stock No. 849-6412
  • Mfr. Part No. TPN10
Each
MYR2,287.48
Temporarily out of stock
Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 3 kA, Fixed Mount
  • RS Stock No. 252-745
  • Mfr. Part No. 193368 NZMH2-4-AX250
Each
MYR10,429.69
In Stock
ABB PS1 3 Phase Busbar, 690V ac, 17.5mm Pitch
  • RS Stock No. 711-6519
  • Mfr. Part No. 1SAM201906R1115 PS1-5-1-65
Each
MYR117.80
In Stock
Better World
Siemens 5sV3 RCCB, 63A, 2 Pole, 100mA, Type A, 230V ac
  • RS Stock No. 211-9662
  • Mfr. Part No. 5SV3416-6
Each
MYR1,175.66
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 1P 40A, Breaking Capacity 5 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-615
  • Mfr. Part No. 3VA5140-4ED11-0AA0
Each
MYR1,003.40
In Stock
Eaton 40A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 181-8582
  • Mfr. Part No. C14M40
Each (In a Box of 10)
MYR15.068
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 85 kA
  • RS Stock No. 209-7038
  • Mfr. Part No. 3VA2010-6HN46-0AA0
Each
MYR5,369.23
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 210-1706
  • Mfr. Part No. 3VA2040-6HN46-0AA0
Each
MYR4,932.76
In Stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 20A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 232-0213
  • Mfr. Part No. 1SDA066800R1 XT1B 160 TMD 20A FF
Each
MYR1,194.05
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 500A, Breaking Capacity 50kA, Fixed Mount
  • RS Stock No. 260-9798
  • Mfr. Part No. LV563315
Each
MYR10,788.55
In Stock
ABB, Tmax XT MCCB 3P 52A, Fixed Mount
  • RS Stock No. 237-6225
  • Mfr. Part No. 1SDA067051R1 XT2N 160 MA 52 FF
Each
MYR1,703.25
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 3P 1A, Fixed Mount
  • RS Stock No. 236-7495
  • Mfr. Part No. 1SDA067780R1 XT2L 160 MF 1 FF
Each
MYR2,368.35
Temporarily out of stock
Schneider Electric, MasterPact MTZ1 Circuit Breaker Accessory
  • RS Stock No. 119-528
  • Mfr. Part No. LV833819
Each
MYR2,404.31
In Stock
Mersen 250A size 31 FF Square Body Fuse, aR, 700V
  • RS Stock No. 304-2057
  • Mfr. Part No. P300002
Each
MYR701.37
In Stock
Eaton 15A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 848-3894
  • Mfr. Part No. FNM-15
Each
MYR135.06
Temporarily out of stock
Legrand Bell Transformer for use with Bell
  • RS Stock No. 266-1381
  • Mfr. Part No. 413091
Each
MYR931.90
1
299
2329
Results per page

Related links