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

159 of 999+
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 4P 80A, Fixed Mount
  • RS Stock No. 260-7766
  • Mfr. Part No. C16F4TM080
Each
$2,720.26(exc. GST)
Temporarily out of stock
Siemens SENTRON Undervoltage Release for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 266-554
  • Mfr. Part No. 3VW9011-0AE03
Each
$838.70(exc. GST)
Temporarily out of stock
Hager RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type F
  • RS Stock No. 602-091
  • Mfr. Part No. ADF916F
Each
$740.80(exc. GST)
In Stock
TE Connectivity 30A Fuse Holder for 10 x 38mm Fuse, 2P, 600V
  • RS Stock No. 299-074
  • Mfr. Part No. 1SNF100026R0000
Each
$18.70(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 4P, 40A Curve D, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7930
  • Mfr. Part No. 2CDS254001R0401 S204-D40
Each
$488.36(exc. GST)
Temporarily out of stock
Siemens 710A Tag Fuse, 77mm, 800V
  • RS Stock No. 608-649
  • Mfr. Part No. 3NE4337-6
1 Pack of 3
$1,169.76(exc. GST)
Temporarily out of stock
Eaton 200A Tag Fuse, 217 x 82 x 94mm, 1kV, 205mm
  • RS Stock No. 282-6226
  • Mfr. Part No. PV-200A-2XL
Each
$983.41(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT NSX400...630 Vigi add-on for use with Wiring
  • RS Stock No. 119-201
  • Mfr. Part No. LV432466
Each
$11,100.24(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 1P 15A, Breaking Capacity 65 kA, Screw Mount
  • RS Stock No. 207-250
  • Mfr. Part No. BGL16015
Each
$935.13(exc. GST)
Temporarily out of stock
Eaton 25A Rail Mount Fuse Holder Base, 3P, 500V ac
  • RS Stock No. 232-017
  • Mfr. Part No. 107965 DII-SO/25/3-R
Each
$68.76(exc. GST)
Temporarily out of stock
Siemens SENTRON Cover Frame for use with 3VA10/11, 3VA9114-0RL10, 3VA9114-0RL20
  • RS Stock No. 161-935
  • Mfr. Part No. 3VA9054-0SB10
Each
$141.71(exc. GST)
In Stock
Schurter 50mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 167-7601
  • Mfr. Part No. 0034.1529
Each (In a Pack of 10)
$5.079(exc. GST)
In Stock
Socomec 40A F Cartridge Fuse, 22 x 58mm
  • RS Stock No. 223-2848
  • Mfr. Part No. 60630040
Each (In a Pack of 10)
$21.831(exc. GST)
Being discontinued
Siemens 160A Fuse Holder for NH00 Fuse, 1P, 690V
  • RS Stock No. 269-8368
  • Mfr. Part No. 3NH3032
Each (In a Pack of 3)
$53.993(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT Trip Unit for use with ComPacT NSX 160/250 Circuit Breakers
  • RS Stock No. 260-7723
  • Mfr. Part No. C1644V160
Each
$3,850.79(exc. GST)
In Stock
Bourns 8A Resettable Fuse, 30V
  • RS Stock No. 647-8639
  • Mfr. Part No. MF-R800
Each (In a Pack of 10)
$1.548(exc. GST)
In Stock
RS PRO Thermal Circuit Breaker -, 5A Current Rating
  • RS Stock No. 774-0014
Each
$16.68(exc. GST)
Limited stock
RS PRO BS 1362, F, T Fuse Kit
  • RS Stock No. 893-8546
Each
$142.75(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 630A 3VA2, 3 channels
  • RS Stock No. 156-798
  • Mfr. Part No. 3VA2463-8KP32-0AA0
Each
$10,648.32(exc. GST)
Temporarily out of stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V ac Voltage Rating, 115A Current Rating
  • RS Stock No. 175-1533
  • Mfr. Part No. GV4PE115S6
Each
$2,081.12(exc. GST)
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