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

184 / 999+
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 16A Curve B, 440V AC, 125V DC, 6 kA Breaking Capacity
  • RS Stock No. 776-3398
  • Mfr. Part No. A9F76216
Each
MYR720.58
ABB RCBO, 20A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, System Pro M Compact Range
  • RS Stock No. 914-4055
  • Mfr. Part No. 2CSR255051R1205 DSE201 B20 AC30 - N Blue
Each
MYR441.14
ABB System Pro M Compact S200M MCB, 2P, 40A Curve D, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 200-048
  • Mfr. Part No. 2CDS272001R0401
Each
MYR1,566.29
Eaton Moeller xPole 3 Phase Busbar, 500V
  • RS Stock No. 252-825
  • Mfr. Part No. 215645 EVG-3PHAS/9MODUL
Each
MYR48.46
ABB RCBO, 63A Current Rating, 4P Poles, Type B
  • RS Stock No. 237-5201
  • Mfr. Part No. 2CSR274001R1635
Each
MYR2,555.99
Better World
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 3 channels
  • RS Stock No. 259-9938
  • Mfr. Part No. 1SDA070801R1
Each
MYR26,210.72
HENSEL ENYSTAR Distribution Board, 6 Way, 63 A
  • RS Stock No. 117-348
  • Mfr. Part No. FP VN 0600 GB
Each
MYR4,372.88
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC Single Pole 250V ac Voltage Rating DIN Rail, 300mA Current
  • RS Stock No. 135-845
  • Mfr. Part No. 0914387
1 Pack of 6
MYR2,201.42
Eaton 6A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 703-8415
  • Mfr. Part No. C14G6
Each (In a Pack of 10)
MYR11.748
Bourns Thermal Fuse +77°C 80 A, 28V
  • RS Stock No. 258-6363
  • Mfr. Part No. HC77AY-1
Each (In a Pack of 10)
MYR5.978
Schneider Electric, ComPacT New Generation MCCB 3P 160A, Fixed Mount
  • RS Stock No. 260-7777
  • Mfr. Part No. C16H34V160
Each
MYR15,224.06
ABB System Pro M Compact S300P MCB, 4P, 8A, Type Z, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 203-756
  • Mfr. Part No. 2CDS384001R0408
Each
MYR3,616.60
Bourns Thermal Fuse +82°C 80 A, 28V
  • RS Stock No. 258-6364
  • Mfr. Part No. HC82AY-1
Each (In a Bag of 5000)
MYR3.783
Schneider Electric, ComPacT New Generation MCCB 3P 100A, Fixed Mount
  • RS Stock No. 260-7771
  • Mfr. Part No. C16H32D100
Each
MYR6,878.71
Mersen 250mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 270-3064
  • Mfr. Part No. K090537
Each (In a Box of 10)
MYR3.009
ABB S301 MCB, 1+N, 6A Curve D, 415V AC, 125V DC, 100 kA Breaking Capacity
  • RS Stock No. 204-462
  • Mfr. Part No. 2CDS381103R0061
Each
MYR1,302.23
Schurter 630mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 167-8020
  • Mfr. Part No. 0034.3115
Each (In a Pack of 10)
MYR2.083
Schneider Electric, ComPacT MCCB 4P 40A, Breaking Capacity 8 kA, Fixed Mount
  • RS Stock No. 345-311
  • Mfr. Part No. C10F6TM040
Each
MYR5,452.71
Hager RCBO, 20A Current Rating, 3P Poles, 30mA Trip Sensitivity, Type AC
  • RS Stock No. 251-2013
  • Mfr. Part No. ADC420F
Each
MYR2,608.02
Better World
Siemens SENTRON 5SL6 MCB, 3P, 32A Curve B, 6 kA Breaking Capacity
  • RS Stock No. 202-7049
  • Mfr. Part No. 5SL6332-6
Each
MYR390.24
1
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