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

175 of 999+
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 400A 3VA, 3 channels
  • RS Stock No. 156-693
  • Mfr. Part No. 3VA2340-7KP32-0AA0
Each
$7,699.19(exc. GST)
In Stock
RS PRO 5A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 911-3470
Each (In a Pack of 10)
$0.137(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 800A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 257-485
  • Mfr. Part No. 3VA5580-1BB66-0AA0
Each
$11,683.18(exc. GST)
Temporarily out of stock
Schneider Electric ComPact Long Terminal Shield for use with Circuit Breaker
  • RS Stock No. 230-6616
  • Mfr. Part No. 33628
Each
$182.82(exc. GST)
In Stock
Mersen 40A FF Cartridge Fuse, 14 x 51mm
  • RS Stock No. 136-0635
  • Mfr. Part No. S1017191 / FR14GR69V40T
Each
$61.22(exc. GST)
Last RS stock
RS PRO 50A Bolted Tag Fuse, A3, 690V ac, 73mm
  • RS Stock No. 221-3717
Each
$24.20(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 1P 63A, Breaking Capacity 18 kA, Fixed Mount
  • RS Stock No. 346-751
  • Mfr. Part No. C10F1TM063
Each
$1,011.45(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 70 kA
  • RS Stock No. 209-6875
  • Mfr. Part No. 3VA1216-6EF32-0AA0
Each
$1,975.53(exc. GST)
In Stock
RS PRO 40A Bolted Tag Fuse, 350 V dc, 690V ac, 63.5mm
  • RS Stock No. 221-3659
Each
$31.26(exc. GST)
In Stock
Mersen 15A Glass Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 136-0524
  • Mfr. Part No. HP10M15
Each (In a Box of 10)
$40.129(exc. GST)
Temporarily out of stock
Siemens ALPHA Flange Plate for use with ALPHA 1250 DIN
  • RS Stock No. 628-992
  • Mfr. Part No. 8GK9100-0KK14
Each
$129.43(exc. GST)
Unavailable
Schneider Electric, NSX Range MCCB 3P 160A, Breaking Capacity 90 kA, Fixed Mount
  • RS Stock No. 849-4359
  • Mfr. Part No. LV430840
Each
$1,045.62(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 160A, Breaking Capacity 36 kA, Panel Mount
  • RS Stock No. 654-760
  • Mfr. Part No. IL1603P36
Each
$2,106.19(exc. GST)
Temporarily out of stock
Socomec 40A Cartridge Fuse, 22.2 x 58mm
  • RS Stock No. 252-5299
  • Mfr. Part No. 170L2240
Each (In a Pack of 10)
$41.466(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 3.2kA Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-4340
  • Mfr. Part No. 1SDA072508R1
Each
$40,886.77(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 3 Phase Distribution Board, 16 Way, 250 A
  • RS Stock No. 244-940
  • Mfr. Part No. SE48B250
Each
$1,632.61(exc. GST)
Temporarily out of stock
Schurter Non-Resettable Wire Ended Fuse 2A, 250V ac
  • RS Stock No. 173-7895
  • Mfr. Part No. 8020.0517.PT
1 Box of 1000
$646.86(exc. GST)
In Stock
Cooper Bussmann 30A Fuse Holder for 1/4 x 1-1/4in Fuse, 32V dc
  • RS Stock No. 385-9388
  • Mfr. Part No. HHB
Each (In a Pack of 5)
$14.96(exc. GST)
In Stock
SIBA 6.3A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3254
  • Mfr. Part No. 70-007-33/6.3A
Each (In a Pack of 10)
$0.449(exc. GST)
In Stock
Siemens SIRIUS Connection Plug for use with 3RV2 Series
  • RS Stock No. 755-2965
  • Mfr. Part No. 3RV2917-5CA00
Each
$24.41(exc. GST)
1
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