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

242 of 999+
In Stock
RS PRO 32A Slotted Tag Fuse, A1, 250 V dc, 415V ac, 44.5mm
  • RS Stock No. 221-3695
Each (In a Pack of 10)
$15.477(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60L MCB, 3P, 16A Curve K, 25 kA Breaking Capacity
  • RS Stock No. 219-9305
  • Mfr. Part No. A9F95316
Each
$686.38(exc. GST)
Temporarily out of stock
Siemens 20A Rail Mount Fuse Holder for 8 x 32mm Fuse, 3P, 400V
  • RS Stock No. 225-5430
  • Mfr. Part No. 3NW7333
Each
$80.14(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 3 kA
  • RS Stock No. 245-440
  • Mfr. Part No. 3VA6225-5JP31-2AA0
Each
$7,389.45(exc. GST)
Temporarily out of stock
Phoenix Contact EC-E Electronic Circuit Breaker 500mA 24V EC-E4, 1 channels , DIN Rail
  • RS Stock No. 131-322
  • Mfr. Part No. 0903040
Each (In a Pack of 6)
$164.482(exc. GST)
Temporarily out of stock
Siemens 63A Tag Fuse, NH2, 400V ac
  • RS Stock No. 144-077
  • Mfr. Part No. 3NA6222-4
1 Pack of 3
$139.36(exc. GST)
In Stock
Eaton 15A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 480V
  • RS Stock No. 225-8218
  • Mfr. Part No. BK-HVP-HH-R
Each (In a Pack of 5)
$16.772(exc. GST)
In Stock
Eaton 30A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 480V
  • RS Stock No. 225-8227
  • Mfr. Part No. BK-HVP-R
Each (In a Pack of 5)
$14.224(exc. GST)
Temporarily out of stock
Eaton 30A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 480V
  • RS Stock No. 225-8222
  • Mfr. Part No. BK-HVP-LW-HH-R
Each (In a Pack of 5)
$27.462(exc. GST)
In Stock
Eaton 30A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 480V
  • RS Stock No. 225-8226
  • Mfr. Part No. BK-HVP-R
1 Bag of 100
$1,010.52(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 260-188
  • Mfr. Part No. 3VA6325-8KQ41-0AA0
Each
$12,983.78(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 4P 50A, Breaking Capacity 65 kA, Clip-On
  • RS Stock No. 428-857
  • Mfr. Part No. BJF46050
Each
$3,443.14(exc. GST)
Temporarily out of stock
Schneider Electric Horizontal Transport Length, 3m, 250A, Canalis Series
  • RS Stock No. 119-272
  • Mfr. Part No. KSA250ET430
Each
$5,421.36(exc. GST)
Temporarily out of stock
Schneider Electric Auxiliary Bus Duct, 1.755m, 32A, Linergy Series
  • RS Stock No. 119-213
  • Mfr. Part No. LVS04203
Each
$1,981.42(exc. GST)
New product - Preorder today
Schneider Electric R9R RCCB, 63A, 4 Pole, 30mA, Type A, 400V ac
  • RS Stock No. 654-678
  • Mfr. Part No. R9R22463
Each
$887.84(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 160A 3VA2, 4 channels
  • RS Stock No. 157-336
  • Mfr. Part No. 3VA2216-6JP42-0AA0
Each
$7,155.96(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 600A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 256-472
  • Mfr. Part No. 3VA5560-7EC36-2AA0
Each
$9,395.86(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller NZM Undervoltage Release for use with N(S)2(-4), N(S)3(-4), NZM2(-4), NZM3(-4)
  • RS Stock No. 248-972
  • Mfr. Part No. 189758 NZM2/3-XU48DC-PI
Each
$373.78(exc. GST)
In Stock
Schneider Electric Acti 9 Cover for use with ARA, IC60, iDPN Vigi, iLD, iSW, ISW-NA, RCA, Reflex iC60
  • RS Stock No. 791-2792
  • Mfr. Part No. A9A26976
Each
$59.09(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 150A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-031
  • Mfr. Part No. 3VA6115-8KQ41-2AA0
Each
$9,351.00(exc. GST)
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