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

127 of 999+
In Stock
Siemens Fuse Holder Adapter Sleeve
  • RS Stock No. 202-7218
  • Mfr. Part No. 5SH5406
Each (In a Pack of 10)
$1.844(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 250A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 260-563
  • Mfr. Part No. 3VA6325-8JQ41-2AA0
Each
$13,566.82(exc. GST)
Limited stock
RS PRO F, T Fuse Kit
  • RS Stock No. 893-8537
Each
$234.34(exc. GST)
Temporarily out of stock
Socomec 100A Rail Mount Fuse Holder for 22 x 58mm Fuse, 3P+N, 690V
  • RS Stock No. 224-2558
  • Mfr. Part No. 57035004
Each
$206.01(exc. GST)
In Stock
Wickmann 0.5A Resettable Fuse, 24V dc
  • RS Stock No. 174-0803
  • Mfr. Part No. RF1403-000
Each (In a Pack of 20)
$0.658(exc. GST)
Temporarily out of stock
Eaton 60A Fuse Holder for 60 x 125 x 35.6mm Fuse, 1P, 690V
  • RS Stock No. 229-027
  • Mfr. Part No. CM60CF
1 Pack of 10
$788.38(exc. GST)
In Stock
Mersen 4A FA Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 188-6899
  • Mfr. Part No. P093347
Each (In a Pack of 10)
$11.358(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 1kA, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 270-4783
  • Mfr. Part No. 3VA2510-6HM42-0AA0
Each
$18,619.65(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 260-412
  • Mfr. Part No. 3VA6325-6JT31-0AA0
Each
$7,691.62(exc. GST)
In Stock
Littelfuse 1.1A Resettable Fuse, 30V
  • RS Stock No. 517-7054
  • Mfr. Part No. SMD100F-2
Each (In a Pack of 10)
$0.628(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 Active iDT40 AFDD, 40A, 1+N Pole
  • RS Stock No. 238-3483
  • Mfr. Part No. A9TAA2640
Each
$1,207.50(exc. GST)
In Stock
Eaton 20A Inline Fuse Holder for 6.3 x 32mm Fuse, 600V
  • RS Stock No. 225-8213
  • Mfr. Part No. BK-HVI-R
Each
$94.96(exc. GST)
Temporarily out of stock
Schneider Electric CompacT Interlock for use with ComPacT ComPacT NSX
  • RS Stock No. 654-164
  • Mfr. Part No. LV429354T
Each
$421.15(exc. GST)
Temporarily out of stock
Eaton 63A Rail Mount Fuse Holder for A3 Fuse, 1P, 690V ac
  • RS Stock No. 221-645
  • Mfr. Part No. RS63PWH
Each
$114.10(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 150A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-021
  • Mfr. Part No. 3VA6115-8HN31-0AA0
Each
$4,462.48(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 125A, Fixed Mount
  • RS Stock No. 260-7987
  • Mfr. Part No. C25R4TM125
Each
$6,581.64(exc. GST)
Temporarily out of stock
Siemens SENTRON Undervoltage Release for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 266-619
  • Mfr. Part No. 3VW9011-0AE05
Each
$838.70(exc. GST)
In Stock
Mersen 12A F Cartridge Fuse, 10 x 38mm
  • RS Stock No. 806-8427
  • Mfr. Part No. ATM12
Each (In a Pack of 10)
$87.428(exc. GST)
Unavailable
Schneider Electric, ComPact MCCB Molded Case Circuit Breaker 4P 40A, Fixed Mount
  • RS Stock No. 221-1065
  • Mfr. Part No. LV433850
Each
$5,181.91(exc. GST)
In Stock
Schneider Electric Resi9 R9E Circuit Breaker, 1P, 20A, 250V AC, 3000 A Breaking Capacity
  • RS Stock No. 276-8940
  • Mfr. Part No. R9ECT620
Each
$239.99(exc. GST)
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