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

34933 Products showing for Fuses & Circuit Breakers

7 of 999+
Littelfuse 15A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 769-0057
  • Mfr. Part No. 0314015.HXP
Each (In a Pack of 10)
$1.692(exc. GST)
Littelfuse PC Board Non Resettable Fuse, Axial 500mA, 125V ac/dc
  • RS Stock No. 541-3259P
  • Mfr. Part No. 0251.500NRT1L
Each (Supplied in a Bag)
$1.701(exc. GST)
SIBA 2A M Ceramic Cartridge Fuse, 5 x 25mm
  • RS Stock No. 267-3537
  • Mfr. Part No. 70-010-05/2A
Each (In a Pack of 5)
$10.05(exc. GST)
NEMIQ Earthing Strap Copper
  • RS Stock No. 283-7538
  • Mfr. Part No. JF 10-150 M6
Each
$12.45(exc. GST)
Eaton 3A F Ceramic Cartridge Fuse, 6.3 x 25mm
  • RS Stock No. 412-560
  • Mfr. Part No. TDC180-3A
Each (In a Pack of 10)
$1.424(exc. GST)
Littelfuse 1A Resettable Fuse, 30V dc
  • RS Stock No. 657-1772
  • Mfr. Part No. RHEF100
Each (In a Pack of 5)
$1.056(exc. GST)
Bourns 0.9A Resettable Fuse, 60V
  • RS Stock No. 647-8538
  • Mfr. Part No. MF-R090
Each (In a Pack of 10)
$0.541(exc. GST)
Mersen 25A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 230-3480
  • Mfr. Part No. E213099
Each (In a Pack of 10)
$5.974(exc. GST)
TE Connectivity Thermal Circuit Breaker - W54 Single Pole 250V ac Voltage Rating, 20A Current Rating
  • RS Stock No. 782-7988
  • Mfr. Part No. W54-XB1A4A10-20
Each
$10.18(exc. GST)
RS PRO PC Board Non Resettable Fuse, Axial 4A, 250V ac
  • RS Stock No. 764-9602P
Each (Supplied on a Reel)
$1.206(exc. GST)
Schneider Electric RCBO, 10A Current Rating, 1P Poles, 30mA Trip Sensitivity, Acti 9 Range
  • RS Stock No. 230-6641
  • Mfr. Part No. A9D32610
Each
$92.91(exc. GST)
SIBA 5A M Ceramic Cartridge Fuse, 5 x 25mm
  • RS Stock No. 267-3509
  • Mfr. Part No. 70-010-05/5A
Each (In a Pack of 5)
$7.414(exc. GST)
Wickmann 30A Inline Fuse Holder, 32V dc
  • RS Stock No. 174-0625
  • Mfr. Part No. 868-062-000
Each (In a Pack of 5)
$3.182(exc. GST)
RS PRO Rail Mount Fuse Holder
  • RS Stock No. 501-871
Each
$31.74(exc. GST)
Europa 3 Phase Distribution Board, 12 Way, 125 A
  • RS Stock No. 849-6406
  • Mfr. Part No. TPN04
Each
$953.79(exc. GST)
RS PRO 10A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-334
Each (In a Pack of 10)
$0.955(exc. GST)
Limitor Thermal Fuse +121°C 10 A/15 A, 250V ac
  • RS Stock No. 797-6042
  • Mfr. Part No. SF 119 R
Each (In a Pack of 10)
$2.629(exc. GST)
Limitor Thermal Fuse +133°C 15 A, 250V ac
  • RS Stock No. 797-6055
  • Mfr. Part No. SF 129 R
Each (In a Pack of 10)
$2.616(exc. GST)
Eaton 32A F Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 489-4641
  • Mfr. Part No. FWP-32A14F
Each
$14.49(exc. GST)
Better World
Schneider Electric Earthing Strap Tinned Copper 150 x 12mm Diameter
  • RS Stock No. 188-1216
  • Mfr. Part No. NSYEB156D6
Each (In a Pack of 10)
$7.081(exc. GST)
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