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

34963 Products showing for Fuses & Circuit Breakers

134 of 999+
In Stock
Siemens 30A Cartridge Fuse, 14 x 51mm
  • RS Stock No. 396-269
  • Mfr. Part No. 3NC1430
Each (In a Pack of 10)
$39.17(exc. GST)
In Stock
SIBA 6.3A F Glass Cartridge Fuse, 5 x 30mm
  • RS Stock No. 361-8216
  • Mfr. Part No. 171530.6,3
Each (In a Pack of 10)
$5.513(exc. GST)
Temporarily out of stock
Schneider Electric RCBO, 32A Current Rating, 1P Poles, 30mA Trip Sensitivity, Acti 9 Range
  • RS Stock No. 230-6649
  • Mfr. Part No. A9D61832
Each
$85.23(exc. GST)
In Stock
Eaton 50A British Standard Fuse, 240V ac, 43mm
  • RS Stock No. 414-774
  • Mfr. Part No. GSA50
Each (In a Pack of 5)
$140.286(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 C60H-DC MCB, 1P, 16A Curve C, 250V DC
  • RS Stock No. 772-1518
  • Mfr. Part No. A9N61511
Each
$100.72(exc. GST)
Temporarily out of stock
Eaton 6A Cartridge Fuses, 14 x 51mm
  • RS Stock No. 228-603
  • Mfr. Part No. C14M6S CYL FUSE >STR >14 x 51 6A GG 500V AC
1 Pack of 10
$162.11(exc. GST)
In Stock
Schneider Electric Acti9 iID RCCB, 80A, 4 Pole, 415V
  • RS Stock No. 245-091
  • Mfr. Part No. A9R12480
Each
$757.06(exc. GST)
In Stock
Eaton 20A British Standard Fuse, F1, 550V ac
  • RS Stock No. 413-513
  • Mfr. Part No. NSD20
Each (In a Pack of 5)
$42.104(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA Ekip Dip LI, 4 channels
  • RS Stock No. 259-3826
  • Mfr. Part No. 1SDA071841R1
Each
$56,981.22(exc. GST)
New product - Preorder today
SRP120F
  • RS Stock No. 552-423
  • Mfr. Part No. RF1669-000
1 Bag of 100
$75.59(exc. GST)
In Stock
Eaton 100A Rail Mount Fuse Holder for A3 Fuse, 1P, 690V ac
  • RS Stock No. 418-489
  • Mfr. Part No. CM100F
Each
$317.99(exc. GST)
Temporarily out of stock
Better World
Siemens Sentron 5SY7 MCB, 1P, 20A Curve C, 230V AC, 15 kA Breaking Capacity
  • RS Stock No. 622-0288
  • Mfr. Part No. 5SY7120-7
Each
$52.02(exc. GST)
In Stock
Finder Busbar, 6 A - 250V
  • RS Stock No. 776-1529
  • Mfr. Part No. 093.16
Each
$5.02(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 63A, Fixed Mount
  • RS Stock No. 260-9481
  • Mfr. Part No. C10H4TM063
Each
$2,240.35(exc. GST)
Temporarily out of stock
Schneider Electric Canalis 1 Phase Busbar, 230-400V
  • RS Stock No. 212-224
  • Mfr. Part No. KBA40ED2305W
1 Pack of 6
$2,956.97(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 63A 3VA2, 3 channels
  • RS Stock No. 157-135
  • Mfr. Part No. 3VA2163-5HM36-0AA0
Each
$2,509.19(exc. GST)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 2P 25A, Breaking Capacity 18 kA, Clip-On
  • RS Stock No. 345-253
  • Mfr. Part No. BDF26025
Each
$1,242.98(exc. GST)
Temporarily out of stock
Bourns Surface Mount Fuse 8A, 50 V dc, 63 V dc
  • RS Stock No. 245-9213
  • Mfr. Part No. SF-0603SPA800R-2
Each (On a Reel of 5000)
$1.076(exc. GST)
Unavailable
Schneider Electric, NSX MCCB 4P 630A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 219-8375
  • Mfr. Part No. LV432808
Each
$8,232.12(exc. GST)
In Stock
Socomec 50A Rail Mount Fuse Holder for 14 x 51mm Fuse, 2P, 690V
  • RS Stock No. 233-3327
  • Mfr. Part No. 57025002
Each (In a Pack of 3)
$77.83(exc. GST)
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