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

34912 Products showing for Fuses & Circuit Breakers

53 of 999+
In Stock
Better World
Schneider Electric Linergy Busbar, 690V, 60mm Pitch
  • RS Stock No. 211-2325
  • Mfr. Part No. LV432623
Each
$780.34(exc. VAT)
In Stock
RS PRO 2A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 668-5991
Each (In a Pack of 10)
$0.745(exc. VAT)
In Stock
TE Connectivity Thermal Circuit Breaker - W58 Single Pole 50 V dc, 250V ac Voltage Rating, 12A Current Rating
  • RS Stock No. 782-7962
  • Mfr. Part No. W58-XB1A4A-12
Each
$26.47(exc. VAT)
In Stock
Siemens 25A NH Fuse, NH000, 500V ac
  • RS Stock No. 397-569
  • Mfr. Part No. 3NA6810
Each (In a Pack of 3)
$48.313(exc. VAT)
In Stock
RS PRO 500mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 177-8092
Each (In a Pack of 50)
$0.556(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 3P 160A, Fixed Mount
  • RS Stock No. 260-7796
  • Mfr. Part No. C16N3
Each
$1,440.82(exc. VAT)
Being discontinued
RS PRO 3A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6048
Each (In a Pack of 10)
$0.882(exc. VAT)
Limited stock
Legrand HX 1 Phase Busbar, 400V, 17.7mm Pitch
  • RS Stock No. 731-9433
  • Mfr. Part No. 4 049 26
Each
$12.72(exc. VAT)
In Stock
Wurth Elektronik 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 893-0609
  • Mfr. Part No. 696212001002
Each (In a Pack of 5)
$3.652(exc. VAT)
In Stock
Eaton, xEnergy MCCB 3P 125A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 454-8146
  • Mfr. Part No. 259086 NZMN1-A125
Each
$1,202.39(exc. VAT)
Temporarily out of stock
Littelfuse SMD Non Resettable Fuse 5A, 32V
  • RS Stock No. 820-7120P
  • Mfr. Part No. 0438005.WR
Each (Supplied on a Reel)
$1.585(exc. VAT)
Temporarily out of stock
WAGO Electronic Circuit Breaker 10A 24V 787, 4 channels , DIN Rail
  • RS Stock No. 279-4100
  • Mfr. Part No. 787-1664/000-080
Each
$722.80(exc. VAT)
Temporarily out of stock
Schneider Electric A9R RCCB, 40A, 4 Pole, 415V
  • RS Stock No. 245-093
  • Mfr. Part No. A9R22440
Each
$718.51(exc. VAT)
In Stock
Schurter 2A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 167-7904
  • Mfr. Part No. 0001.1007
Each (In a Pack of 10)
$1.439(exc. VAT)
Temporarily out of stock
Hager 10A Cartridge Fuse, 14 x 51mm
  • RS Stock No. 250-8623
  • Mfr. Part No. LF410M
Each (In a Pack of 10)
$10.28(exc. VAT)
Being discontinued
RS PRO 160mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-586
Each (In a Pack of 10)
$0.607(exc. VAT)
In Stock
RS PRO 20A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 521-2551
Each (In a Pack of 5)
$11.492(exc. VAT)
In Stock
Schurter 16A Fuse Holder for 5 x 20mm Fuse, 1P, 500V ac
  • RS Stock No. 269-3786
  • Mfr. Part No. 0031.8265
Each
$4.09(exc. VAT)
Temporarily out of stock
Eaton 60A Fuse Holder for 5 x 5in Fuse, 3P, 600V
  • RS Stock No. 228-940
  • Mfr. Part No. CH60J3
1 Pack of 2
$799.25(exc. VAT)
In Stock
Eaton 25A Slow-Blow Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-105
  • Mfr. Part No. C10M25 CYLINDRICAL FUSE 10 x 38 25A AM 400V AC
1 Pack of 10
$27.62(exc. VAT)
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