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

298 of 999+
Temporarily out of stock
Phoenix Contact Thermal Circuit Breaker - TMCP 1 M1 300 4A 2 Pole 65 V dc, 250V ac Voltage Rating, 4A Current Rating
  • RS Stock No. 882-2300
  • Mfr. Part No. 0915797
1 Box of 6
$870.83(exc. GST)
Temporarily out of stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V ac Voltage Rating, 80A Current Rating
  • RS Stock No. 175-1445
  • Mfr. Part No. GV4L80B
Each
$867.35(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 32A, Breaking Capacity 55 kA
  • RS Stock No. 209-6990
  • Mfr. Part No. 3VA1132-5EE32-0AA0
Each
$911.59(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 350A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 257-283
  • Mfr. Part No. 3VA5335-7EF31-2AA0
Each
$11,264.65(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3748
  • Mfr. Part No. 3VA2040-6JP36-0AA0
Each
$3,519.98(exc. GST)
Temporarily out of stock
32A Cartridge Fuse, 13 x 29mm
  • RS Stock No. 263-117
  • Mfr. Part No. SMD32
1 Pack of 20
$558.58(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 55 kA
  • RS Stock No. 210-1673
  • Mfr. Part No. 3VA1163-5EF36-0AA0
Each
$1,035.02(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 260-405
  • Mfr. Part No. 3VA6325-6HL31-0AA0
Each
$5,673.42(exc. GST)
In Stock
Schneider Electric Multifix Cover for use with Circuit Breaker
  • RS Stock No. 275-8813
  • Mfr. Part No. LVS03220
1 Box of 5
$180.47(exc. GST)
In Stock
Schurter PC Board Non Resettable Fuse, Radial 500mA, 250V ac
  • RS Stock No. 173-9787
  • Mfr. Part No. 0034.6612
Each (In a Bag of 100)
$1.308(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY8 MCB, 2P, 1A Curve D, 400V AC, 60V DC, 70 kA Breaking Capacity
  • RS Stock No. 610-561
  • Mfr. Part No. 5SY8201-8
Each
$373.77(exc. GST)
In Stock
Siemens SENTRON 1 Phase Busbar, 36mm Pitch
  • RS Stock No. 187-5219
  • Mfr. Part No. 5ST3765-2
Each
$43.68(exc. GST)
Temporarily out of stock
Better World
Eaton 80A Tag Fuse, 217 x 65 x 85mm, 1kV, 163mm
  • RS Stock No. 282-6256
  • Mfr. Part No. PV-80A-01XL-B
Each
$762.52(exc. GST)
Temporarily out of stock
Schurter TA36 Rocker Circuit Breaker - TA36 Single Pole 32 V dc, 277 V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 221-5580
  • Mfr. Part No. 3-128-197
1 Box of 50
$1,009.47(exc. GST)
Temporarily out of stock
Siemens 24V ac Circuit Trip
  • RS Stock No. 223-7630
  • Mfr. Part No. 5TT4424-2
Each
$221.98(exc. GST)
In Stock
Mersen Surge Protector, 50kA, 1000V (Volts), DIN Rail Mount
  • RS Stock No. 361-606
  • Mfr. Part No. 44020102
Each
$77.53(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 125A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 654-621
  • Mfr. Part No. C12B6TM125L
Each
$1,855.75(exc. GST)
In Stock
ABB Cover for use with 2 Phases Busbars
  • RS Stock No. 250-4779
  • Mfr. Part No. 2CDL800001R0021
1 Box of 10
$44.24(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 800A, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 432-856
  • Mfr. Part No. C080N32EFM
Each
$18,209.21(exc. GST)
In Stock
Littelfuse Non-Resettable Surface Mount Fuse 60A, 250V ac
  • RS Stock No. 229-1426P
  • Mfr. Part No. 0456060.DRSDE
Each (Supplied on a Reel)
$11.86(exc. GST)
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