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

86 of 999+
Temporarily out of stock
Better World
Siemens SIRIUS Electronic Circuit Breaker 630mA 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-273
  • Mfr. Part No. 3RV2411-0GA15
Each
$522.96(exc. GST)
In Stock
Siemens 25A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 395-806
  • Mfr. Part No. 3NC1025
Each (In a Pack of 10)
$46.698(exc. GST)
In Stock
Eaton 10A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 848-3891
  • Mfr. Part No. FNM-10
Each
$65.68(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200M MCB, 2P, 13A Curve C, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 132-138
  • Mfr. Part No. 2CDS272001R0134 S202M-C13
Each
$144.74(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 2P, 2A Curve B, 400V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-308
  • Mfr. Part No. 5SY4202-6
Each
$166.35(exc. GST)
Temporarily out of stock
Eaton 1.25A T Melamine Cartridge Fuse, 1.5 x 0.41in
  • RS Stock No. 261-648
  • Mfr. Part No. LP-CC-1-1/4
1 Pack of 10
$1,138.17(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 3, 3+N Phase Distribution Board, 24 Way, 250 A
  • RS Stock No. 336-623
  • Mfr. Part No. SEA9BN24PS
Each
$1,682.46(exc. GST)
In Stock
ETA REX12 Electronic Circuit breaker 2A 24V REX12-T, 1 channels , DIN Rail Mount
  • RS Stock No. 175-0364
  • Mfr. Part No. REX12-TA1-107-DC24V-2A
Each
$101.37(exc. GST)
Temporarily out of stock
Schneider Electric, ComPact MCCB Molded Case Circuit Breaker 3P 1.6kA, Fixed Mount
  • RS Stock No. 232-3144
  • Mfr. Part No. 33482
Each
$21,085.22(exc. GST)
In Stock
Hager 1 Phase Busbar
  • RS Stock No. 144-4828
  • Mfr. Part No. KB163N
Each
$21.45(exc. GST)
Temporarily out of stock
Siemens SENTRON Interlock for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 266-523
  • Mfr. Part No. 3VW9011-0BA22
Each
$255.63(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 20A, Breaking Capacity 18 kA, DIN Rail Mount
  • RS Stock No. 205-284
  • Mfr. Part No. NHGF36020TW
Each
$2,569.64(exc. GST)
Temporarily out of stock
Siemens 25A Cartridge Fuse, 14 x 51mm
  • RS Stock No. 232-2050
  • Mfr. Part No. 3NW6110-1
Each (In a Pack of 10)
$11.772(exc. GST)
Temporarily out of stock
Phoenix Contact PTCB Electronic Circuit Breaker 2A 48V PTCB E1, 1 channels , DIN Rail
  • RS Stock No. 488-222
  • Mfr. Part No. 1471918
Each
$94.56(exc. GST)
In Stock
Schneider Electric, Wiser, 16A, POWERTAG, Wireless
  • RS Stock No. 341-239
  • Mfr. Part No. CCTFR6730
Each
$140.46(exc. GST)
In Stock
Mersen 630A size 31 FF Square Body Fuse, aR, 700V
  • RS Stock No. 304-2120
  • Mfr. Part No. W300008
Each
$425.00(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA, 3 channels
  • RS Stock No. 155-807
  • Mfr. Part No. 3VA2325-8HN32-0AA0
Each
$6,393.49(exc. GST)
Temporarily out of stock
Schneider Electric, Compact MCCB 3P 800A, Breaking Capacity 75 kA, Fixed Mount
  • RS Stock No. 340-921
  • Mfr. Part No. C080B3FM
Each
$8,866.46(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Touch LSI, 3 channels
  • RS Stock No. 259-3081
  • Mfr. Part No. 1SDA070935R1
Each
$13,009.47(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 30A, Breaking Capacity 25 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-340
  • Mfr. Part No. 3VA5130-6ED21-1AA0
Each
$1,589.91(exc. GST)
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