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

50989 Products showing for Fuses & Circuit Breakers

4 of 999+
In Stock
Better World
Siemens Sentron 5SY7 MCB, 1P, 3A Curve C, 230V AC, 15 kA Breaking Capacity
  • RS Stock No. 622-0165
  • Mfr. Part No. 5SY7103-7
Each
€32.35(exc. VAT)
In Stock
SIBA 12.5A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 783-3387
  • Mfr. Part No. 70-059-60/12.5A
Each (In a Pack of 10)
€0.687(exc. VAT)
In Stock
Schurter TA11 Thermal Circuit Breaker - T11-211 Single Pole 240V ac Voltage Rating Universal Mount, 6A Current Rating
  • RS Stock No. 269-3820
  • Mfr. Part No. 4400.0050
Each
€7.74(exc. VAT)
In Stock
ETI 20A DII Diazed Fuse, E27 Thread Size, gG - gL, 500V ac
  • RS Stock No. 413-670
  • Mfr. Part No. 2312406
Each (In a Pack of 5)
€1.364(exc. VAT)
In Stock
ABB 12 Way Plastic Consumer Unit, 63A, IP65 Mistral65
  • RS Stock No. 183-3758
  • Mfr. Part No. 1SLM006500A2212
Each
€42.02(exc. VAT)
In Stock
ABB RCBO, 32A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C
  • RS Stock No. 183-3704
  • Mfr. Part No. 2CSR245041R1324
Each
€133.49(exc. VAT)
In Stock
Europa EUC1P EUC MCB, 1P, 2A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 849-6496
  • Mfr. Part No. EUC1P2C
Each
€8.31(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 C120N MCB, 3P, 80A Curve C, 440V AC, 375V DC, 10 kA, 20 kA Breaking Capacity
  • RS Stock No. 776-3064
  • Mfr. Part No. A9N18365
Each
€454.03(exc. VAT)
Being discontinued
RS PRO 500mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-463
Each (In a Pack of 10)
€0.331(exc. VAT)
In Stock
Siemens ALPHA Busbar
  • RS Stock No. 226-0831
  • Mfr. Part No. 8GK9733-0KK10
Each
€44.20(exc. VAT)
In Stock
TE Connectivity Thermal Circuit Breaker - W28 Single Pole 32 V dc, 250V ac Voltage Rating, 3A Current Rating
  • RS Stock No. 782-0911
  • Mfr. Part No. W28-XQ1A-3
Each
€4.16(exc. VAT)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 6A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7706
  • Mfr. Part No. 2CDS252001R0064 S202-C6
Each
€53.56(exc. VAT)
In Stock
Siemens ALPHA Distribution Board, 8 Way
  • RS Stock No. 211-6074
  • Mfr. Part No. 8GB1371-1
Each
€56.53(exc. VAT)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 20A Curve D, 440V AC, 12V DC, 6 kA Breaking Capacity
  • RS Stock No. 527-9611
  • Mfr. Part No. 2CDS253001R0201 S203-D20
Each
€77.77(exc. VAT)
In Stock
Littelfuse 3A Purple Blade Car Fuse, 32V dc
  • RS Stock No. 787-4142
  • Mfr. Part No. 0287003.PXCN
Each (In a Pack of 10)
€0.271(exc. VAT)
In Stock
Better World
Schneider Electric Easy 9 EZ9 MCB, 1P, 10A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 850-8593
  • Mfr. Part No. EZ9F16110
Each
€6.44(exc. VAT)
In Stock
Phoenix Contact Busbar
  • RS Stock No. 290-1258
  • Mfr. Part No. 0402174
Each
€12.37(exc. VAT)
In Stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V Voltage Rating DIN Rail Mount, 40A Current
  • RS Stock No. 272-836
  • Mfr. Part No. GV3L40
Each
€204.41(exc. VAT)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 63A Curve B, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 746-7611
  • Mfr. Part No. 2CDS253001R0635 S203-B63
Each
€85.80(exc. VAT)
In Stock
Eaton 25A gG/gL Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-266
  • Mfr. Part No. C10G25 CYLINDRICAL FUSE 10 x 38 25A GG 500V AC
1 Pack of 10
€8.06(exc. VAT)
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