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

1725 of 999+
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2.5kA 1SDA07, 3 channels
  • RS Stock No. 259-4326
  • Mfr. Part No. 1SDA072480R1
Each
$43,785.97(exc. GST)
In Stock
Schneider Electric Acti9 Acti9 iC60 MCB, 3P, 1.6A Curve K, 100 kA Breaking Capacity
  • RS Stock No. 106-758
  • Mfr. Part No. A9F95372
1 Pack of 1
$1,454.89(exc. GST)
In Stock
Eaton 1.75A Resettable Fuse, 6V
  • RS Stock No. 225-8236
  • Mfr. Part No. PTSLR08056V175
1 Reel of 4000
$2,626.36(exc. GST)
In Stock
Eaton 8A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8223P
  • Mfr. Part No. PV-8A10F
Each (Supplied in a Box)
$95.25(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3591
  • Mfr. Part No. 3VA2010-7KP42-0AA0
Each
$5,170.74(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3776
  • Mfr. Part No. 3VA2040-7JP36-0AA0
Each
$3,884.17(exc. GST)
Temporarily out of stock
Siemens 6A NH Fuse, NH000, 500V ac
  • RS Stock No. 395-670
  • Mfr. Part No. 3NA6801
Each (In a Pack of 3)
$23.237(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 3.2kA 1SDA07, 3 channels
  • RS Stock No. 259-4342
  • Mfr. Part No. 1SDA072510R1
Each
$43,042.62(exc. GST)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 1kA, Breaking Capacity 35 kA
  • RS Stock No. 249-136
  • Mfr. Part No. 3VA6610-6JT32-0AA0
Each
$20,966.90(exc. GST)
Temporarily out of stock
Eaton NZM Undervoltage Release for use with Circuit Breaker
  • RS Stock No. 255-408
  • Mfr. Part No. 266248 NZM4-XUHIV20208-240AC
Each
$756.99(exc. GST)
Temporarily out of stock
Schneider Electric, MasterPact Circuit Breaker Accessory
  • RS Stock No. 119-647
  • Mfr. Part No. LV833811
Each
$963.49(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 2P 125A, Breaking Capacity 25 KA, Fixed Mount
  • RS Stock No. 119-279
  • Mfr. Part No. C16M2TM125
Each
$2,486.17(exc. GST)
In Stock
Littelfuse 0.5A Resettable Fuse, 13.2V dc
  • RS Stock No. 138-679P
  • Mfr. Part No. NANOSMDC050F/13.2-2
Each (Supplied on a Reel)
$0.628(exc. GST)
Temporarily out of stock
Schneider Electric, LVR Circuit Breaker Accessory 39A
  • RS Stock No. 119-443
  • Mfr. Part No. LVR07250A40T
Each
$2,169.35(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 750mA, 125V
  • RS Stock No. 738-2885P
  • Mfr. Part No. 0154.750DR
Each (Supplied on a Reel)
$4.348(exc. GST)
In Stock
Circuit-breaker/thermal 12 A
  • RS Stock No. 577-277
  • Mfr. Part No. 4430.0024
Each
$25.05(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA 1SDA07, 4 channels
  • RS Stock No. 259-3856
  • Mfr. Part No. 1SDA071868R1
Each
$64,669.54(exc. GST)
In Stock
Schneider Electric Resi9 Resi9 XE DM MCB, 1P, 32A Curve D, 230V AC, 3000 A Breaking Capacity
  • RS Stock No. 287-6050
  • Mfr. Part No. R9EFD632
Each
$137.82(exc. GST)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 1kA, Breaking Capacity 35 kA, Cable Mount
  • RS Stock No. 249-105
  • Mfr. Part No. 3VA6610-7KQ46-0AA0
Each
$28,254.86(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 60A, Breaking Capacity 3 kA
  • RS Stock No. 245-471
  • Mfr. Part No. 3VA6160-0KT41-0AA0
Each
$6,861.90(exc. GST)
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