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

144 of 999+
In Stock
Siemens 250A NH Fuse, NH1, 500V ac
  • RS Stock No. 397-565
  • Mfr. Part No. 3NA3144
Each (In a Pack of 3)
$44.867(exc. GST)
In Stock
Eaton 3.15A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1155
  • Mfr. Part No. S500-3.15-R
Each (In a Pack of 10)
$0.697(exc. GST)
In Stock
Eaton PKZ0 Circuit Breaker for use with PKZM0, PKZM4
  • RS Stock No. 272-7215
  • Mfr. Part No. 106137 PKZ0-XRH-MCC
Each
$192.93(exc. GST)
Temporarily out of stock
Vigi iC60 - earth leakage add-on block -
  • RS Stock No. 248-3706
  • Mfr. Part No. A9V15263
Each
$761.05(exc. GST)
Temporarily out of stock
Schneider Electric Panelset Busbar
  • RS Stock No. 444-414
  • Mfr. Part No. NSYTBCN368
Each
$4,032.58(exc. GST)
In Stock
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)
In Stock
Siemens SENTRON 1 Phase Busbar, 27mm Pitch
  • RS Stock No. 217-6963
  • Mfr. Part No. 5ST3733
Each
$56.67(exc. GST)
Temporarily out of stock
Eaton 32A Tag Fuse, 415V ac
  • RS Stock No. 229-143
  • Mfr. Part No. NITD32M50
1 Pack of 20
$1,029.16(exc. GST)
In Stock
RS PRO 160A NH Fuse, NH00, 415V ac
  • RS Stock No. 221-3686
1 Bag of 5
$161.70(exc. GST)
Temporarily out of stock
Mersen 1.6A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 136-0567
  • Mfr. Part No. N090517 / MI5SF25V1,6
Each (In a Pack of 10)
$1.304(exc. GST)
Temporarily out of stock
Eaton NZM Jumper Link for use with N2-4-160(200)-S1(-S15)-DC
  • RS Stock No. 120-240
  • Mfr. Part No. 168591 NZM2-4-XKV1P
Each
$860.86(exc. GST)
Temporarily out of stock
Siemens SENTRON Interlock for use with 3VA51
  • RS Stock No. 275-981
  • Mfr. Part No. 3VA9158-0VF30
Each
$376.76(exc. GST)
Temporarily out of stock
Eaton 63A Fuse Holder for 60 x 125 x 35.6mm Fuse, 1P, 690V
  • RS Stock No. 228-875
  • Mfr. Part No. CM63F
1 Pack of 10
$688.35(exc. GST)
Temporarily out of stock
Eaton NZMC3 Electronic Circuit Breaker 500A , 4 channels , Fixed
  • RS Stock No. 121-333
  • Mfr. Part No. 168469 NZMC3-4-A500/320-SVE
Each
$7,879.15(exc. GST)
In Stock
Eaton 10A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 852-7036
  • Mfr. Part No. MDA-10-R
Each
$14.99(exc. GST)
Limited stock
Limitor Thermal Fuse +60°C 2.5 A, 250V ac
  • RS Stock No. 176-9126
  • Mfr. Part No. P82 60 05100
Each
$13.55(exc. GST)
In Stock
Wickmann PC Board Non Resettable Fuse, Radial 250mA, 250V ac
  • RS Stock No. 226-0529P
  • Mfr. Part No. 3700250000
Each (Supplied as a Tape)
$2.06(exc. GST)
In Stock
RS PRO 5A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 911-3470
Each (In a Pack of 10)
$0.137(exc. GST)
In Stock
Eaton 100A British Standard Fuse, 240V ac, 43mm
  • RS Stock No. 414-796
  • Mfr. Part No. GSA100
Each (In a Pack of 5)
$91.77(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 Acti9 iC60 MCB, 4P, 63A, Type A, 500V AC, 30 mA Breaking Capacity
  • RS Stock No. 429-220
  • Mfr. Part No. A9V71463
Each
$3,455.43(exc. GST)
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