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

254 of 999+
Temporarily out of stock
Siemens 2A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 627-089
  • Mfr. Part No. 3NC1202-0MK
1 Pack of 20
$446.29(exc. GST)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 160A, Breaking Capacity 18.5 kA, Plug In
  • RS Stock No. 231-341
  • Mfr. Part No. 113193 NZMB2-A160-SVE
Each
$2,512.33(exc. GST)
Last RS stock
Wickmann SMD Non Resettable Fuse 10A, 63V
  • RS Stock No. 174-0752
  • Mfr. Part No. 0458010.DR
Each (In a Pack of 5)
$3.47(exc. GST)
Temporarily out of stock
Clipsal Electrical RCBO, 10A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type A-SI, MAX9 Range
  • RS Stock No. 282-2982
  • Mfr. Part No. MX9R3210S
Each
$231.26(exc. GST)
In Stock
Eaton PC Board Non Resettable Fuse, Radial 400mA, 250V ac
  • RS Stock No. 769-3343
  • Mfr. Part No. SS-5-400MA-BK
Each (In a Pack of 5)
$1.862(exc. GST)
Temporarily out of stock
Hager Hager NKN Circuit Breaker, 3P, 6A Curve C, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 599-799
  • Mfr. Part No. NKN306
Each
$496.13(exc. GST)
Temporarily out of stock
Hager CFC RCD Switch, 63A, 2 Pole, 300mA, Type AC, 230V
  • RS Stock No. 599-849
  • Mfr. Part No. CFC163F
Each
$456.10(exc. GST)
Temporarily out of stock
Eaton xComfort Distribution Board Enclosure, 24 Way
  • RS Stock No. 259-147
  • Mfr. Part No. 283049 BF-U-4/96-C
Each
$1,780.06(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 16A, Breaking Capacity 25 kA
  • RS Stock No. 209-7021
  • Mfr. Part No. 3VA1196-3ED32-0AA0
Each
$765.89(exc. GST)
Temporarily out of stock
Siemens ALPHA Adapter
  • RS Stock No. 226-2863
  • Mfr. Part No. 8GK4853-0KK20
Each (In a Pack of 2)
$82.02(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 Active iDT40 AFDD, 40A, 1+N Pole
  • RS Stock No. 238-3484
  • Mfr. Part No. A9TYA4640
Each
$1,231.76(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 1A, 125V ac/dc
  • RS Stock No. 541-3625
  • Mfr. Part No. 0452001.MRL
Each (In a Pack of 10)
$2.717(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 110A, Breaking Capacity 7 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-198
  • Mfr. Part No. 3VA5111-5EC31-0AA0
Each
$1,916.67(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 160A 3VA2, 3 channels
  • RS Stock No. 157-154
  • Mfr. Part No. 3VA2216-7HN32-0AA0
Each
$4,577.01(exc. GST)
Temporarily out of stock
Better World
Siemens SIRIUS Electronic Circuit Breaker 100A 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-050
  • Mfr. Part No. 3RV2041-4MA10-0DA0
Each
$1,592.03(exc. GST)
Temporarily out of stock
Siemens SENTRON Busbar Connector for use with 3VA53/54, 3VA63/64
  • RS Stock No. 157-965
  • Mfr. Part No. 3VA9474-0QC00
Each
$1,270.21(exc. GST)
Temporarily out of stock
Siemens SIRIUS Wiring Module
  • RS Stock No. 157-781
  • Mfr. Part No. 3RA2933-3FA00
Each
$57.49(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 1P 50A, Breaking Capacity 5 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-669
  • Mfr. Part No. 3VA5150-4ED11-0AA0
Each
$606.90(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 600A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 249-327
  • Mfr. Part No. 3VA6460-8HM31-0AA0
Each
$10,696.49(exc. GST)
In Stock
Better World
Schneider Electric Cover for use with Compact Nsx, Easypact Cvs
  • RS Stock No. 221-1264
  • Mfr. Part No. LV432592
Each
$194.51(exc. GST)
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