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

34963 Products showing for Fuses & Circuit Breakers

124 of 999+
HENSEL ENYMOD Distribution Board
  • RS Stock No. 117-510
  • Mfr. Part No. Mi 1449
Each
$1,533.87(exc. GST)
Better World
Siemens, SENTRON MCCB 4P 400A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 249-370
  • Mfr. Part No. 3VA6440-8KL41-0AA0
Each
$14,755.33(exc. GST)
ABB End Cap, S800 Series
  • RS Stock No. 140-380
  • Mfr. Part No. 2CCS800900R0091
Each
$101.86(exc. GST)
ABB SN201 MCB, 1+N, 32A Curve C, 230V AC, 4.5 kA Breaking Capacity
  • RS Stock No. 186-3481
  • Mfr. Part No. 2CSS245202R0324
Each
$22.32(exc. GST)
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)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 260-657
  • Mfr. Part No. 3VA6325-8KP31-2AA0
Each
$10,853.49(exc. GST)
Siemens 315A Tag Fuse, 360 x 60mm, 3kV
  • RS Stock No. 299-823
  • Mfr. Part No. 3NE9330-0MK07
Each
$2,270.94(exc. GST)
Finder Surge Protector
  • RS Stock No. 257-7420
  • Mfr. Part No. 7P2082750020
Each
$58.72(exc. GST)
Schneider Electric, ComPacT MCCB 4P 1.25kA, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 428-756
  • Mfr. Part No. C125N460FM
Each
$33,936.24(exc. GST)
Eaton 100A Cartridge Fuse, 76 x 403mm
  • RS Stock No. 228-705
  • Mfr. Part No. 7.2WFNHA100
1 Pack of 3
$3,622.50(exc. GST)
Hager HMC MCB, 4P, 125A, 400V AC, 15 Breaking Capacity
  • RS Stock No. 602-119
  • Mfr. Part No. HMC499
Each
$2,204.29(exc. GST)
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-4133
  • Mfr. Part No. 3VA2116-8JP42-0AA0
Each
$6,148.10(exc. GST)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 260-431
  • Mfr. Part No. 3VA6325-7KP31-2AA0
Each
$9,866.79(exc. GST)
Schneider Electric Acti 9 iC60N MCB, 3P, 25A Curve C
  • RS Stock No. 230-6667
  • Mfr. Part No. A9F44325
Each
$96.31(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 600A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 250-116
  • Mfr. Part No. 3VA6560-6JQ46-2AA0
Each
$19,240.23(exc. GST)
Hager CDH RCCB, 40A, 1P+N Pole, 30mA, Type A-HI, 230V ac
  • RS Stock No. 597-912
  • Mfr. Part No. CDH140F
Each
$484.28(exc. GST)
Schneider Electric Acti 9 3 Phase Distribution Board, 18 Way, 250 A
  • RS Stock No. 230-6837
  • Mfr. Part No. SAU25018183
Each
$261.38(exc. GST)
Littelfuse 0.75A Resettable Fuse, 33V dc
  • RS Stock No. 787-4259
  • Mfr. Part No. 1812L075/33DR
Each (In a Pack of 10)
$0.817(exc. GST)
Phoenix Contact 10A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 254-4865
  • Mfr. Part No. 3061334
Each (In a Pack of 10)
$30.473(exc. GST)
RS PRO 160A NH Fuse, NH00, 415V ac
  • RS Stock No. 221-3686
1 Bag of 5
$161.70(exc. GST)
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