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

3 of 999+
In Stock
Littelfuse Cartridge Fuse 15A, 300 V dc, 600V ac
  • RS Stock No. 878-3318
  • Mfr. Part No. KLDR015
Each (In a Pack of 10)
€43.314(exc. VAT)
In Stock
Eaton 20A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8392
  • Mfr. Part No. C10G20
Each (In a Pack of 10)
€1.321(exc. VAT)
Limited stock
RS PRO F, T Fuse Kit
  • RS Stock No. 893-8537
Each
€97.20(exc. VAT)
In Stock
ETA Thermal Circuit Breaker - 106-P10 Single Pole 240V ac Voltage Rating Panel Mount, 2.5A Current Rating
  • RS Stock No. 289-0549
  • Mfr. Part No. 106-P10-5A
Each
€19.38(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 2 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2724
  • Mfr. Part No. A9XPH224
Each
€34.90(exc. VAT)
In Stock
Mersen 20A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 230-3474
  • Mfr. Part No. D211028
Each (In a Pack of 10)
€1.662(exc. VAT)
In Stock
ABB 4 Way Plastic Consumer Unit, 63A, IP65 Mistral65
  • RS Stock No. 811-1880
  • Mfr. Part No. 1SL1200A00 65P04X12
Each
€27.82(exc. VAT)
In Stock
Better World
Schneider Electric Easy 9 EZ9 MCB, 1P, 32A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 850-8619
  • Mfr. Part No. EZ9F16132
Each
€6.44(exc. VAT)
Being discontinued
RS PRO 5A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-532
Each (In a Pack of 10)
€0.331(exc. VAT)
In Stock
Eaton 2.5A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1486
Each (In a Pack of 10)
€0.231(exc. VAT)
In Stock
Littelfuse 5A Brown Blade Car Fuse, 32V dc
  • RS Stock No. 787-4123
  • Mfr. Part No. 0297005.WXNV
Each (In a Pack of 10)
€0.283(exc. VAT)
In Stock
SIBA 5A F Glass Cartridge Fuse, 5 x 30mm
  • RS Stock No. 361-8200
  • Mfr. Part No. 171530.5
Each (In a Pack of 10)
€2.317(exc. VAT)
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
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)
Limited 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)
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