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

38 of 999+
RS PRO 2.5A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 610-9692
Each (In a Pack of 10)
$1.361(exc. GST)
ABB MCCB 3P 160A, Breaking Capacity 65 kA
  • RS Stock No. 192-0840
  • Mfr. Part No. 1SDA067058R1
Each
$1,282.15(exc. GST)
Littelfuse 20A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 250V ac
  • RS Stock No. 769-0170
  • Mfr. Part No. 03453LF1H
Each
$9.05(exc. GST)
Eaton 500A Centred Tag Fuse, NH2, 440V ac
  • RS Stock No. 182-1428
  • Mfr. Part No. 500NHG2B
Each (In a Box of 3)
$49.647(exc. GST)
ABB DDA200 RCD, 40A, 3 Pole, 300mA
  • RS Stock No. 225-6078
  • Mfr. Part No. 2CSB203101R3400 DDA203 A-40/0.3
Each
$321.98(exc. GST)
Littelfuse 20A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 1P, 250V ac
  • RS Stock No. 787-4423P
  • Mfr. Part No. 03453LS1H
Each (Supplied in a Bag)
$10.03(exc. GST)
Littelfuse 11A F Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 738-3197
  • Mfr. Part No. 0FLU011.T
Each
$97.25(exc. GST)
RS PRO 2A British Standard Fuse, F1, 550V ac
  • RS Stock No. 521-2882
Each (In a Pack of 5)
$10.766(exc. GST)
Littelfuse 400A Purple Time Delay Car Fuse, 32V dc
  • RS Stock No. 878-1299
  • Mfr. Part No. 0298400.ZXH
Each
$23.54(exc. GST)
Schurter 1.6A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 167-7897
  • Mfr. Part No. 0001.1006
Each (In a Pack of 10)
$0.906(exc. GST)
Siemens SIRIUS 3 Phase Busbar Protector, 690V
  • RS Stock No. 755-2971
  • Mfr. Part No. 3RV2925-5EB
Each
$88.76(exc. GST)
ETA Thermal Circuit Breaker - 1610 Single Pole 32V dc Voltage Rating, 15A Current Rating
  • RS Stock No. 409-895
  • Mfr. Part No. 1610-21-15A
Each
$20.90(exc. GST)
Littelfuse 2A M Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 769-0026
  • Mfr. Part No. 0234002.MXP
Each (In a Pack of 25)
$1.326(exc. GST)
RS PRO 16A British Standard Fuse, A2, 550V ac, 73mm
  • RS Stock No. 521-2589
Each (In a Pack of 5)
$12.862(exc. GST)
RS PRO 20A Slow-Blow Ceramic Cartridge Fuse, 6.35 x 32mm
  • RS Stock No. 180-075
1 Pack of 10
$62.83(exc. GST)
ABB PS3 3 Phase Busbar, 400V ac
  • RS Stock No. 539-1648
  • Mfr. Part No. 2CDL230001R1660 PS3/60/16
Each
$237.16(exc. GST)
Mersen 30A FF Cartridge Fuse, 10 x 38mm
  • RS Stock No. 136-0621
  • Mfr. Part No. G1014582 / FR10GR69V30
Each
$97.12(exc. GST)
Clipsal Electrical MAX9 MX9MC MCB, 3P, 20A, 415V AC, 6000 A Breaking Capacity
  • RS Stock No. 282-2951
  • Mfr. Part No. MX9MC320
Each
$57.27(exc. GST)
RS PRO HBC, LBC Fuse Kit
  • RS Stock No. 420-252
1 Kit
$167.93(exc. GST)
RS PRO 500mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-633
Each (In a Pack of 10)
$0.893(exc. GST)
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