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

289 / 999+
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 400A, Breaking Capacity 50kA
  • RS Stock No. 260-9791
  • Mfr. Part No. LV540510
Each
MYR7,466.42
Temporarily out of stock
Eaton 40A Cartridge Fuse, 76 x 292mm
  • RS Stock No. 229-092
  • Mfr. Part No. 12FFLSJ40
1 Pack of 3
MYR8,855.35
Temporarily out of stock
Eaton 600A Tag Fuse, 60mm, 1kV
  • RS Stock No. 282-6206
  • Mfr. Part No. FWE-600A
Each
MYR2,848.78
In Stock
Eaton xEffect MCB, 2P, 10A Curve D, 230 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 769-4747
  • Mfr. Part No. 168071 FAZ6-D10/2
Each
MYR428.18
Temporarily out of stock
Mersen 8A Slow-Blow Ceramic Cartridge Fuse, 13 x 29mm
  • RS Stock No. 209-6434
  • Mfr. Part No. P1065074 / BMD42V8
Each (In a Pack of 10)
MYR30.103
In Stock
Carling Technologies Thermal Circuit Breaker - C Single Pole 240V Voltage Rating Panel Mount, 30A Current Rating
  • RS Stock No. 881-0830
  • Mfr. Part No. CA1-B0-34-630-121-C
Each
MYR121.07
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 40A, Fixed Mount
  • RS Stock No. 260-7472
  • Mfr. Part No. C10V45E040
Each
MYR15,460.35
In Stock
Eaton RCD, 20A, 2 Pole, 30mA, Type C, 230V
  • RS Stock No. 922-8737
  • Mfr. Part No. 236249 PKNM-20/1N/C/003-A-MW
Each
MYR711.44
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 1+N, 63A Curve D
  • RS Stock No. 237-3225
  • Mfr. Part No. 2CDS251103R0631
Each
MYR811.78
In Stock
Schneider Electric A9Q RCCB, 25A, 3 Pole, 300mA, Type AC, 400V ac
  • RS Stock No. 276-8735
  • Mfr. Part No. A9Q14325
Each
MYR1,365.26
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Dip LSI, 4 channels
  • RS Stock No. 259-4525
  • Mfr. Part No. 1SDA072763R1
Each
MYR26,019.47
In Stock
Bourns SMD Non Resettable Fuse 500mA, 24V dc
  • RS Stock No. 692-4959
  • Mfr. Part No. SF-0402F050-2
Each (In a Pack of 10)
MYR2.175
In Stock
Better World
Siemens Sentron 5SY4 MCB, 1P, 16A Curve D, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1256
  • Mfr. Part No. 5SY4116-8
Each
MYR168.62
Temporarily out of stock
ABB S203L MCB, 3P, 20A Curve D, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 203-078
  • Mfr. Part No. 2CDS243701R0201
Each
MYR1,091.17
Limited stock
Limitor Thermal Fuse +45°C 2.5 A, 250V ac
  • RS Stock No. 176-9081
  • Mfr. Part No. P82 45 05100
Each
MYR29.75
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 3.2kA Ekip G Touch LSIG, 3 channels
  • RS Stock No. 259-3249
  • Mfr. Part No. 1SDA071147R1
Each
MYR82,704.55
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 3P 630A, Fixed Mount
  • RS Stock No. 250-4153
  • Mfr. Part No. 1SDA054423R1
Each
MYR25,987.03
In Stock
Better World
Schneider Electric RCBO, 32A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3333
  • Mfr. Part No. A9DV2632
Each
MYR1,484.97
Temporarily out of stock
Siemens SENTRON 5SJ4304 MCB, 3P, 4A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 299-775
  • Mfr. Part No. 5SJ4304-8HG42
Each
MYR1,774.90
In Stock
Schneider Electric Acti9 iID RCCB, 80A, 2 Pole, 30mA, Type AC, 240V ac
  • RS Stock No. 589-856
  • Mfr. Part No. A9R11280
Each
MYR1,561.89
1
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