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

34912 Products showing for Fuses & Circuit Breakers

73 of 999+
Temporarily out of stock
Eaton Eaton Distribution Parts 3 Phase Busbar, 500V
  • RS Stock No. 259-361
  • Mfr. Part No. 271072 Z-SV-16/3P
Each
$125.02(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 400A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 260-197
  • Mfr. Part No. 3VA6340-5JP31-0AA0
Each
$8,164.49(exc. GST)
Temporarily out of stock
Eaton 32A Fuse Holder for 52 x 25 x 81mm Fuse, 1P, 550V ac
  • RS Stock No. 262-568
  • Mfr. Part No. SC32H/D
1 Pack of 10
$235.79(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 400A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 249-423
  • Mfr. Part No. 3VA6440-6JT41-0AA0
Each
$18,919.21(exc. GST)
In Stock
Bourns 3A Resettable Fuse, 30V
  • RS Stock No. 647-8572P
  • Mfr. Part No. MF-R300
Each (Supplied in a Bag)
$0.982(exc. GST)
Temporarily out of stock
Hager CZ001 RCCB, 6A, 2 Pole, Type AC, 240V
  • RS Stock No. 599-737
  • Mfr. Part No. CZ001
Each
$177.33(exc. GST)
Limited stock
Limitor Thermal Fuse +90°C 2.5 A, 250V ac
  • RS Stock No. 204-7433
  • Mfr. Part No. Q82 A 90 05 100
Each
$14.85(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Busbar Centre Feed Unit, Canalis KS Series
  • RS Stock No. 211-0460
  • Mfr. Part No. KSA400ABT4
Each
$4,347.20(exc. GST)
In Stock
Eaton 100A Tag Fuse, 25mm, 1kV
  • RS Stock No. 282-6192
  • Mfr. Part No. FWE-100A
Each
$337.30(exc. GST)
Temporarily out of stock
ETA Thermal Circuit Breaker - 105 Single Pole 240V Voltage Rating Snap In, 3A Current Rating
  • RS Stock No. 728-8626
  • Mfr. Part No. 105-P10-3A
Each
$49.18(exc. GST)
Temporarily out of stock
Schneider Electric Busbar Trunking Jointing Device, KTA Series
  • RS Stock No. 339-798
  • Mfr. Part No. KTA2000ED4403
Each
$7,968.98(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA2, 4 channels Type N
  • RS Stock No. 157-374
  • Mfr. Part No. 3VA2225-8HL42-0AA0
Each
$6,366.01(exc. GST)
Temporarily out of stock
WJ Furse Copper Earth Clamp Max. Conductor Size 25 x 3mm Nominal Rod dia. 10mm 26mm
  • RS Stock No. 153-2956
Each (In a Pack of 10)
$18.961(exc. GST)
In Stock
Eaton 30A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 848-4273
  • Mfr. Part No. KTK-R-30
Each
$102.84(exc. GST)
In Stock
Mersen 10A Glass Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 136-0523
  • Mfr. Part No. HP10M10
Each (In a Box of 10)
$25.103(exc. GST)
Temporarily out of stock
Better World
Siemens SIRIUS Electronic Circuit Breaker 630mA 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-273
  • Mfr. Part No. 3RV2411-0GA15
Each
$522.96(exc. GST)
In Stock
RS PRO Industrial Surge Protector, 20kA, 250 V, DIN Rail Mount
  • RS Stock No. 101-751
Each
$128.95(exc. GST)
In Stock
Siemens 25A D02 Neozed Fuse, gG, 400V ac
  • RS Stock No. 622-1089
  • Mfr. Part No. 5SE2325
Each (In a Pack of 10)
$3.111(exc. GST)
In Stock
Better World
ABB Compact Home SH200 MCB, 1P, 20A Curve C, 440V AC, 60V DC, 6 kA Breaking Capacity
  • RS Stock No. 539-8245
  • Mfr. Part No. 2CDS211001R0204 SH201-C20
Each
$37.64(exc. GST)
Temporarily out of stock
Eaton Electronic Circuit Breaker 24V , DIN Rail
  • RS Stock No. 261-399
  • Mfr. Part No. PXS24ACC0000 PXS24-PCH
Each
$13.12(exc. GST)
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