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

14 of 999+
Schurter Thermal Circuit Breaker - T11 Single Pole 240V ac Voltage Rating, 1A Current Rating
  • RS Stock No. 284-5798
  • Mfr. Part No. 4400.0008
Each
$29.17(exc. GST)
Eaton 32A Fuse Holder for 52 x 25 x 81mm Fuse, 1P, 550V ac
  • RS Stock No. 262-568
  • Mfr. Part No. SC32H/D
1 Pack of 10
$235.79(exc. GST)
Busbar tin-plated 50 mm
  • RS Stock No. 279-4286
  • Mfr. Part No. 790-134
1 Box of 20
$122.47(exc. GST)
Littelfuse 20A Panel Mount Fuse Holder for ATO Fuse, 32V dc
  • RS Stock No. 787-4233
  • Mfr. Part No. 01550320ZXU
Each
$6.17(exc. GST)
RS PRO 10A Inline Fuse Holder for 5x20mm Fuse, 250V
  • RS Stock No. 237-5259
Each
$6.53(exc. GST)
Mersen 25A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 230-3503
  • Mfr. Part No. G217172
Each (In a Pack of 10)
$7.303(exc. GST)
RS PRO 12.5A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 209-9282
Each (In a Pack of 10)
$2.891(exc. GST)
TE Connectivity Thermal Circuit Breaker - W58 Single Pole 50 V dc, 250V ac Voltage Rating, 15A Current Rating
  • RS Stock No. 782-7966
  • Mfr. Part No. W58-XC4C12A-15
Each
$18.11(exc. GST)
Littelfuse PC Board Non Resettable Fuse, Axial 125mA, 125V ac/dc
  • RS Stock No. 541-3237P
  • Mfr. Part No. 0251.125HAT1L
Each (Supplied in a Bag)
$2.774(exc. GST)
Bourns Thermal Fuse +90°C 60 A, 28V
  • RS Stock No. 258-6358
  • Mfr. Part No. AC90ABD
Each (In a Bag of 1000)
$1.692(exc. GST)
Schurter Thermal Circuit Breaker - T13 Single Pole 240V ac Voltage Rating, 1A Current Rating
  • RS Stock No. 173-9843
  • Mfr. Part No. 4411.0129
Each (In a Box of 20)
$38.906(exc. GST)
Better World
Schneider Electric Copper
  • RS Stock No. 219-8668
  • Mfr. Part No. NSYRBL216146M
Each (In a Pack of 10)
$24.78(exc. GST)
ABB, OVR 275 V Maximum Voltage Rating 80kA Maximum Surge Current Surge Protection Device, DIN Rail
  • RS Stock No. 175-2590
  • Mfr. Part No. 2CTB815710R0100
Each
$766.08(exc. GST)
Better World
Schneider Electric 100 → 415 V ac, 110 → 130V dc Shunt Trip Circuit Trip for use with ARA, ic60 MCB, IDPN
  • RS Stock No. 791-2815
  • Mfr. Part No. A9A26946
Each
$251.29(exc. GST)
Siemens 63A Bottle Fuse Holder, 500V ac
  • RS Stock No. 202-7135
  • Mfr. Part No. 5SH1231
Each (In a Pack of 5)
$15.68(exc. GST)
RS PRO 8A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-598
Each (In a Pack of 10)
$1.10(exc. GST)
Better World
Schneider Electric Acti 9 4 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2770
  • Mfr. Part No. A9XPH512
Each
$150.41(exc. GST)
Eaton 30A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 848-4273
  • Mfr. Part No. KTK-R-30
Each
$102.84(exc. GST)
Socomec 32A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 122-5269
  • Mfr. Part No. 60120032
Each (In a Pack of 10)
$3.202(exc. GST)
Siemens SENTRON 5SY6 MCB, 1P, 15A Curve C, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-636
  • Mfr. Part No. 5SY6118-7
Each
$70.84(exc. GST)
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