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

71 of 999+
Last RS stock
Wickmann SMD Non Resettable Fuse 1A, 125V
  • RS Stock No. 174-0673
  • Mfr. Part No. 0448001.MR
Each (In a Pack of 5)
$2.33(exc. GST)
In Stock
Schneider Electric Acti9 Acti9 iC60 MCB, 1P, 4A Curve D, 500V AC, 1000 A Breaking Capacity
  • RS Stock No. 428-820
  • Mfr. Part No. A9F85104
Each
$138.44(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
Better World
Schneider Electric Acti 9 iC60L MCB, 1P, 20A Curve C, 15 kA Breaking Capacity
  • RS Stock No. 219-9267
  • Mfr. Part No. A9F94120
Each
$194.73(exc. GST)
In Stock
Legrand 10A Ceramic Cartridge Fuse, 10 x 25mm
  • RS Stock No. 293-8137
  • Mfr. Part No. 0 116 10
Each (In a Pack of 10)
$3.991(exc. GST)
Temporarily out of stock
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC 2 Pole 250V ac Voltage Rating DIN Rail, 1A Current Rating
  • RS Stock No. 135-900
  • Mfr. Part No. 0914976
1 Pack of 3
$839.40(exc. GST)
New product - Preorder today
Schneider Electric, ComPacT MCCB 1P 100A, Breaking Capacity 40 kA, Fixed Mount
  • RS Stock No. 655-283
  • Mfr. Part No. C10M1TM100
Each
$931.30(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 1 Phase Distribution Board, 27 Way, 125 A
  • RS Stock No. 339-683
  • Mfr. Part No. SEA9APN27
Each
$1,015.98(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 1kA, Breaking Capacity 31 kA, Fixed Mount
  • RS Stock No. 428-722
  • Mfr. Part No. C100H360FM
Each
$30,476.29(exc. GST)
Limited stock
Better World
Schneider Electric 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 3P, 690V ac
  • RS Stock No. 482-859
  • Mfr. Part No. DF103
Each
$130.82(exc. GST)
In Stock
RS PRO 750mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 911-3385
Each (In a Pack of 10)
$0.574(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 1kA, Breaking Capacity 31 kA, Fixed Mount
  • RS Stock No. 346-736
  • Mfr. Part No. C100H42EFM
Each
$29,655.44(exc. GST)
Temporarily out of stock
Eaton 4A T Melamine Cartridge Fuse, 1.5 x 0.41in
  • RS Stock No. 261-724
  • Mfr. Part No. FNQ-R-4
1 Pack of 10
$1,206.88(exc. GST)
Temporarily out of stock
Eaton 400A Tag Fuse, 3L, 1kV, 205mm
  • RS Stock No. 282-6532
  • Mfr. Part No. PV-400A-3L
Each
$1,706.21(exc. GST)
Limited stock
Mersen NH Fuse Puller, Sizes 00 → 3
  • RS Stock No. 136-0623
  • Mfr. Part No. P215592 / NHHANDLE
Each
$123.09(exc. GST)
Temporarily out of stock
Eaton 100A Tag Fuse, 21 x 87mm, 500V, 74mm
  • RS Stock No. 263-279
  • Mfr. Part No. BAO100
1 Pack of 20
$1,796.12(exc. GST)
In Stock
Better World
Schneider Electric 3 Phase Surge Protector, DIN Rail Mount
  • RS Stock No. 822-8054
  • Mfr. Part No. A9L40601
Each
$757.60(exc. GST)
Temporarily out of stock
Siemens SENTRON Adapter for use with 3VA13/14, 3VA23/24
  • RS Stock No. 161-881
  • Mfr. Part No. 3VA9367-0LF10
Each
$325.44(exc. GST)
In Stock
RS PRO 10A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6091
Each (In a Pack of 10)
$0.909(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SV60 MCB, 2P, 40A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 328-334
  • Mfr. Part No. 5SV6016-6KP40
Each
$520.89(exc. GST)
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