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

259 of 999+
In Stock
Eaton 80A British Standard Fuse, B1, 500V, 111mm
  • RS Stock No. 181-8653
  • Mfr. Part No. CD80
Each
$45.03(exc. GST)
Temporarily out of stock
Better World
Siemens SIRIUS Electronic Circuit Breaker 250mA 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-094
  • Mfr. Part No. 3RV2311-0CC10
Each
$391.97(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 150A, Breaking Capacity 18 kA, DIN Rail Mount
  • RS Stock No. 341-435
  • Mfr. Part No. NHGL36150
Each
$5,079.95(exc. GST)
In Stock
Littelfuse 4A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4511
  • Mfr. Part No. 0218004.MXP
Each (In a Pack of 10)
$1.541(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Compact Nsx Spreader for use with Compact Nsx 100/160/250
  • RS Stock No. 221-1220
  • Mfr. Part No. LV431060
Each
$665.26(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 1 Phase Distribution Board, 18 Way, 125 A
  • RS Stock No. 339-811
  • Mfr. Part No. SEA9APN18
Each
$593.75(exc. GST)
In Stock
Schneider Electric, ComPacT NSX Circuit breaker 1P 80A, Breaking Capacity 25 kA, Busbar System
  • RS Stock No. 654-211
  • Mfr. Part No. IL0801P251
Each
$442.90(exc. GST)
Temporarily out of stock
Hager Hager NKN Circuit Breaker, 4P, 6A Curve C, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 599-801
  • Mfr. Part No. NKN406
Each
$683.36(exc. GST)
Temporarily out of stock
Eaton NZM2 Cover for use with NS2, NZM2, PN2
  • RS Stock No. 229-795
  • Mfr. Part No. 119868 NZM2-XKSAE
Each
$62.16(exc. GST)
In Stock
Littelfuse PC Board Non Resettable Fuse, Axial 1.5A, 125V ac
  • RS Stock No. 787-4334
  • Mfr. Part No. 025101.5MAT1L
Each (In a Pack of 5)
$1.656(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 800A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 429-056
  • Mfr. Part No. C080L320FM
Each
$21,107.22(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT Thermal Magnetic Release for use with Distribution
  • RS Stock No. 119-459
  • Mfr. Part No. C50FM
Each
$5,862.54(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT New generation MCCB 3P 25A, Breaking Capacity 440 V, Fixed Mount
  • RS Stock No. 205-305
  • Mfr. Part No. C11N34V025B
Each
$6,033.52(exc. GST)
In Stock
ABB Surge Protector, DIN Rail Mount
  • RS Stock No. 136-3868
  • Mfr. Part No. 1SNA295401R2300
Each
$13.04(exc. GST)
Temporarily out of stock
Eaton 100A Cartridge Fuse, 25 x 110mm
  • RS Stock No. 228-864
  • Mfr. Part No. CEO100
1 Pack of 10
$894.76(exc. GST)
Temporarily out of stock
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0315
  • Mfr. Part No. 8GK1072-3KK31
Each
$3,411.82(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. 260-382
  • Mfr. Part No. 3VA6225-8JP41-2AA0
Each
$9,956.45(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 25A 3VA2, 3 channels
  • RS Stock No. 157-263
  • Mfr. Part No. 3VA2125-5JP36-0AA0
Each
$3,229.48(exc. GST)
Temporarily out of stock
Eaton 200A NH Fuse, 63 x 40 x 135mm, 400V ac
  • RS Stock No. 251-945
  • Mfr. Part No. 200NHG1B-400
1 Pack of 3
$62.48(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 1 Phase Distribution Board Enclosure, 34 Way
  • RS Stock No. 339-350
  • Mfr. Part No. SEA9BN4SXP
Each
$666.80(exc. GST)
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