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

50 of 999+
Limited stock
RS PRO F, T Fuse Kit
  • RS Stock No. 893-8543
Each
$505.85(exc. VAT)
In Stock
Better World
RS PRO 12A F Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 239-4974
Each (In a Pack of 10)
$15.283(exc. VAT)
In Stock
Schurter 16A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 144-1824
  • Mfr. Part No. 8020.5023.G
Each (In a Bag of 10)
$2.46(exc. VAT)
In Stock
ETA Thermal Circuit Breaker - 3120-N 2 Pole 50 V DC, 240 V AC Voltage Rating, 12A Current Rating
  • RS Stock No. 210-2094
  • Mfr. Part No. 3120-N551-H7T1-W14DR4-12A
Each
$61.47(exc. VAT)
In Stock
RS PRO 20A Yellow Blade Car Fuse, 32V dc
  • RS Stock No. 563-560
Each (In a Pack of 10)
$2.039(exc. VAT)
In Stock
RS PRO 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 668-5969
Each (In a Pack of 10)
$0.941(exc. VAT)
Being discontinued
RS PRO 3A T Ceramic Cartridge Fuse, 6.3 x 25mm
  • RS Stock No. 174-7957
Each (In a Box of 500)
$0.462(exc. VAT)
Limited stock
RS PRO 10A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-643
Each (In a Pack of 10)
$0.893(exc. VAT)
In Stock
Eaton 20A Rail Mount Fuse Holder
  • RS Stock No. 418-631
  • Mfr. Part No. RS20LOCK
Each (In a Pack of 3)
$23.513(exc. VAT)
In Stock
Schurter 10A PCB Mount Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 176-9047
  • Mfr. Part No. 0031.8201
Each (In a Pack of 10)
$1.74(exc. VAT)
In Stock
Littelfuse 200mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4195
  • Mfr. Part No. 0218.200MXP
Each (In a Pack of 10)
$2.55(exc. VAT)
In Stock
ABB 54 Way Plastic Consumer Unit, 125A, IP65 Mistral65
  • RS Stock No. 811-1915
  • Mfr. Part No. 1SL1208A00 65P18X32
Each
$303.26(exc. VAT)
In Stock
RS PRO 15A Blue Blade Car Fuse, 32V dc
  • RS Stock No. 563-750
Each (In a Pack of 10)
$1.568(exc. VAT)
In Stock
Mersen 125A NH Fuse, NH00, 500V ac
  • RS Stock No. 375-9626
  • Mfr. Part No. R201863
Each (In a Pack of 3)
$27.33(exc. VAT)
In Stock
RS PRO 630mA F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-378
Each (In a Pack of 10)
$0.382(exc. VAT)
Temporarily out of stock
Eaton Eaton xEnergy Basic Busbar
  • RS Stock No. 258-711
  • Mfr. Part No. 289868 BPZ-BBS-4/250
Each
$176.64(exc. VAT)
In Stock
RS PRO 20A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 177-8124
Each (In a Pack of 50)
$1.40(exc. VAT)
In Stock
RS PRO 100A Solid Link for A4 Fuses
  • RS Stock No. 242-1077
Each
$20.04(exc. VAT)
Limited stock
RS PRO F, T Fuse Kit
  • RS Stock No. 893-8537
Each
$234.34(exc. VAT)
In Stock
ABB 8 Way Plastic Consumer Unit, 63A, IP65 Mistral65
  • RS Stock No. 811-1899
  • Mfr. Part No. 1SL1201A00 65P08X12
Each
$75.54(exc. VAT)
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