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

197 of 999+
In Stock
Schurter 10A Panel Mount Fuse Holder for 6.3 x 32, 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 866-3454
  • Mfr. Part No. 0031.1693
Each (In a Pack of 100)
$3.302(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 A9F MCB Mini Circuit Breaker, 3P, 63A Curve B, 415V AC, 375V DC, 15 kA Breaking Capacity
  • RS Stock No. 653-900
  • Mfr. Part No. A9N18423
Each
$858.98(exc. GST)
Temporarily out of stock
Eaton 25A Cartridge Fuse, 51 x 292mm
  • RS Stock No. 244-327
  • Mfr. Part No. 12TDLEJ25
Each
$371.43(exc. GST)
Temporarily out of stock
RS PRO 50A Ceramic Cartridge Fuse, 15 x 22mm
  • RS Stock No. 188-4497
Each (In a Box of 320)
$25.258(exc. GST)
In Stock
ABB 220 → 400V ac/dc Shunt Trip Shunt trip for use with S800PV, S800S, S800N, S800C, S800B, S800HV, S800U Series
  • RS Stock No. 435-538
  • Mfr. Part No. 2CCS800900R0231 S800-SOR400
Each
$240.94(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 100A, Breaking Capacity 35 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-475
  • Mfr. Part No. 3VA5110-5ED21-0AA0
Each
$1,417.69(exc. GST)
Temporarily out of stock
Schneider Electric Altivar Process Modular Busbar
  • RS Stock No. 578-369
  • Mfr. Part No. VW3A99BCFCD01
Each
$1,387.58(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 125A, Fixed Mount
  • RS Stock No. 260-8047
  • Mfr. Part No. C25W3TM125
Each
$5,569.85(exc. GST)
In Stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX250 Circuit Breakers
  • RS Stock No. 260-7842
  • Mfr. Part No. C2542D250
Each
$1,809.94(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON Circuit breaker 3P 320A, DIN Rail Mount
  • RS Stock No. 224-7907
  • Mfr. Part No. 3VA1332-6MH32-0AA0
Each
$4,563.56(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 150A, Fixed Mount
  • RS Stock No. 260-8042
  • Mfr. Part No. C25W36M150
Each
$11,641.30(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller NZM Residual Current Release for use with N(S)1, Three Pole NZM1
  • RS Stock No. 248-477
  • Mfr. Part No. 104603 NZM1-XFI30R
Each
$1,770.22(exc. GST)
In Stock
Eaton 6A Slow-Blow Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-183
  • Mfr. Part No. C10M6 CYLINDRICAL FUSE 10 x 38 6A AM 500V AC
1 Pack of 10
$27.62(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 320A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 341-514
  • Mfr. Part No. C50F4TM250D3
Each
$9,088.19(exc. GST)
In Stock
Schurter 16A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 384-055
  • Mfr. Part No. 3101.0020
Each (In a Pack of 5)
$7.88(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 4P, 16A Curve C, 400V AC, 110V DC, 6 kA Breaking Capacity
  • RS Stock No. 746-7801
  • Mfr. Part No. 2CDS254001R0164 S204-C16
Each
$401.04(exc. GST)
Temporarily out of stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 16A, Fixed Mount
  • RS Stock No. 254-6295
  • Mfr. Part No. C10N3TM016
Each
$1,602.27(exc. GST)
In Stock
Eaton 250A NH Fuse, NH1, 500V
  • RS Stock No. 703-8715
  • Mfr. Part No. 250NHG1B
Each
$22.30(exc. GST)
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 3P 125A, Breaking Capacity 16 kA, DIN Rail Mount
  • RS Stock No. 178-8093
  • Mfr. Part No. LV426158
Each
$579.05(exc. GST)
In Stock
Better World
Schneider Electric Earthing Strap Tinned Copper 160 x 10mm Diameter
  • RS Stock No. 219-9706
  • Mfr. Part No. NSYEL166D6
Each (In a Pack of 10)
$5.667(exc. GST)
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