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

35151 Products showing for Fuses & Circuit Breakers

179 of 999+
RS PRO 50A Slotted Tag Fuse, 17.4 x 42mm, 240V, 42mm
  • RS Stock No. 188-4501
Each (In a Box of 200)
$53.78(exc. GST)
Eaton Fuse Puller Fuse Puller
  • RS Stock No. 261-727
  • Mfr. Part No. FP-6
Each
$287.27(exc. GST)
Mersen 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 2P, 690 V ac → 1kV ac/dc
  • RS Stock No. 189-5339
  • Mfr. Part No. D1062718 / CUS102
Each
$60.46(exc. GST)
Schneider Electric Mureva Distribution Board, 24 Way, 160 A
  • RS Stock No. 119-439
  • Mfr. Part No. 13968M
Each
$1,572.34(exc. GST)
Eaton PC Board Non Resettable Fuse, Radial 6.3A, 250V ac
  • RS Stock No. 169-9554
  • Mfr. Part No. SS-5H-6-3A-BK
Each (In a Bag of 200)
$0.828(exc. GST)
TE Connectivity Thermal Circuit Breaker - W28 Single Pole 32 V dc, 250V ac Voltage Rating, 250mA Current Rating
  • RS Stock No. 782-0898
  • Mfr. Part No. W28-XQ1A-0.25
Each
$20.19(exc. GST)
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V Voltage Rating DIN Rail Mount, 50A Current
  • RS Stock No. 272-943
  • Mfr. Part No. GV3P50
Each
$1,206.36(exc. GST)
Schneider Electric, ComPacT NSX Circuit breaker 1P 100A, Breaking Capacity 25 kA, Busbar System
  • RS Stock No. 654-232
  • Mfr. Part No. IL1001P251
Each
$442.90(exc. GST)
Littelfuse 2.5A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-3704
  • Mfr. Part No. 021602.5MXP
Each (In a Pack of 10)
$2.221(exc. GST)
Littelfuse 20A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 769-3763
  • Mfr. Part No. 0FLQ020.T
Each
$69.65(exc. GST)
Siemens 230V (Volts) Push Button Circuit Trip
  • RS Stock No. 213-2394
  • Mfr. Part No. 5TE4807
Each
$52.14(exc. GST)
nVent ERIFLEX ERIFLEX Busbar, 25mm Pitch
  • RS Stock No. 277-6095
  • Mfr. Part No. 550230
Each (In a Pack of 4)
$350.798(exc. GST)
Littelfuse SMD Non Resettable Fuse 3A, 125V ac/dc
  • RS Stock No. 541-3647P
  • Mfr. Part No. 0452003.MRL
Each (Supplied on a Reel)
$2.774(exc. GST)
Schneider Electric 250A Neutral Link for BS Fuses, 6.5mm x 38mm
  • RS Stock No. 417-307
  • Mfr. Part No. NL250
Each
$81.83(exc. GST)
Mersen 10A Glass Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 136-0523
  • Mfr. Part No. HP10M10
Each (In a Box of 10)
$25.103(exc. GST)
Eaton 3.7A Resettable Fuse, 6V
  • RS Stock No. 225-8297
  • Mfr. Part No. PTSLR18126V370
Each (In a Pack of 10)
$1.453(exc. GST)
COVER FOR MAXIHOLDER 152001.-BULK 100
  • RS Stock No. 522-962
  • Mfr. Part No. 01520900H
1 Bag of 50
$346.04(exc. GST)
RS PRO 50A Ceramic Cartridge Fuse, 15 x 22mm
  • RS Stock No. 188-4497
Each (In a Box of 320)
$25.258(exc. GST)
TE Connectivity Thermal Circuit Breaker - W68 2 Pole 277V ac Voltage Rating, 15A Current Rating
  • RS Stock No. 782-7855
  • Mfr. Part No. W68-X2Q12-15
Each
$251.37(exc. GST)
Eaton Eaton Moeller NZM Residual Current Release for use with N(S)1, Three Pole NZM1
  • RS Stock No. 248-477
  • Mfr. Part No. 104603 NZM1-XFI30R
Each
$1,770.22(exc. GST)
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