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

82 of 999+
In Stock
Mersen 6A FF Cartridge Fuse, 10 x 38mm
  • RS Stock No. 136-0597
  • Mfr. Part No. Y1014574 / FR10GR69V6
Each
$28.09(exc. GST)
Temporarily out of stock
Schneider Electric Vertical Busbar, Canalis Series
  • RS Stock No. 346-717
  • Mfr. Part No. KSA250ED33012
Each
$3,194.97(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 150A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 268-621
  • Mfr. Part No. 3VA6115-7HN31-0AA0
Each
$3,879.44(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3848
  • Mfr. Part No. 3VA2063-6JQ32-0AA0
Each
$4,321.08(exc. GST)
Temporarily out of stock
Siemens SENTRON Terminal for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 266-568
  • Mfr. Part No. 3VW9011-0AL74
Each
$959.78(exc. GST)
Currently unavailable
Fluke 15A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 729-6740
  • Mfr. Part No. 892583
Each
$34.73(exc. GST)
In Stock
RS PRO 3A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 911-3405
Each (In a Pack of 10)
$0.574(exc. GST)
New product - Preorder today
Schneider Electric 32A Fuse Holder for 70 x 61mm Fuse, 3P+N, 690V
  • RS Stock No. 654-627
  • Mfr. Part No. DF103NV
Each
$103.23(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 5 kA, Cable Mount, Panel Mount
  • RS Stock No. 147-271
  • Mfr. Part No. 3VA5110-4ED31-0AA0
Each
$1,327.04(exc. GST)
Limited stock
ABB SN201 MCB, 1+N, 2A Curve C, 230V AC, 4.5 kA Breaking Capacity
  • RS Stock No. 191-9456
  • Mfr. Part No. 2CSS245102R0024 SN201 L C2-L
Each
$43.15(exc. GST)
Limited stock
Hager 1 Phase Busbar
  • RS Stock No. 144-4829
  • Mfr. Part No. KB163P
Each
$22.13(exc. GST)
In Stock
Eaton Eaton Moeller NZM Door Coupling Handle for use with N(S)1(-4), NZM1(-4), PN1(-4)
  • RS Stock No. 255-551
  • Mfr. Part No. 260166 NZM1-XTVD
Each
$204.29(exc. GST)
In Stock
Phoenix Contact Electronic Circuit Breaker 8A 24V PTCB, DIN Rail Mount
  • RS Stock No. 201-5438
  • Mfr. Part No. 2909910
Each
$73.88(exc. GST)
In Stock
Hager NEN MCB, 1P, 6A, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 602-147
  • Mfr. Part No. NEN106
Each
$114.50(exc. GST)
Currently unavailable
FUSE 250V UL TL TR5 SL 6.3A
  • RS Stock No. 565-401
  • Mfr. Part No. 37416300430
Each
$393.22(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 250A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 341-444
  • Mfr. Part No. NJJF36250U31XTW
Each
$9,864.33(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY Circuit Breaker, 1P, 500mA Curve C, 440V AC, 70 kA Breaking Capacity
  • RS Stock No. 664-368
  • Mfr. Part No. 5SY8105-7
Each
$105.77(exc. GST)
In Stock
Wickmann PC Board Non Resettable Fuse, Radial 1.6A, 250V ac
  • RS Stock No. 226-0951
  • Mfr. Part No. 3721160000
Each (In a Pack of 10)
$0.904(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 2P 20A, Breaking Capacity 35 kA, Clip-On
  • RS Stock No. 341-122
  • Mfr. Part No. BGF26020
Each
$1,503.90(exc. GST)
In Stock
Littelfuse Fuse Holder Water Proof Holder
  • RS Stock No. 738-2784
  • Mfr. Part No. FHAC0001ZXJ
Each
$9.92(exc. GST)
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