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

264 of 999+
Temporarily out of stock
Eaton Eaton xEffect Conversion Kit for use with K95
  • RS Stock No. 235-356
  • Mfr. Part No. 020277 D-K95
Each
$18.44(exc. GST)
Temporarily out of stock
Siemens 10A Cartridge Fuse
  • RS Stock No. 210-6995
  • Mfr. Part No. 3NW3100-0HG
Each (In a Pack of 10)
$54.78(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2kA Ekip Dip LI, 4 channels
  • RS Stock No. 259-4734
  • Mfr. Part No. 1SDA073011R1
Each
$21,446.92(exc. GST)
Currently unavailable
Omron Busbar
  • RS Stock No. 111-3069
  • Mfr. Part No. PYDN-6.2-020S
Each
$2.48(exc. GST)
Temporarily out of stock
Eaton 400A NH Fuse, 71 x 54 x 150mm, 400V ac
  • RS Stock No. 261-578
  • Mfr. Part No. 400NHG2B-400
1 Pack of 3
$107.58(exc. GST)
Temporarily out of stock
Eaton 50A Fuse Holder for 14 x 51mm Fuse, 3P, 690V
  • RS Stock No. 228-937
  • Mfr. Part No. CH143DIU 3P 14x51 Neon Indicator Fuse Holder
1 Pack of 2
$278.92(exc. GST)
In Stock
Siemens Sentron Handle Locking Device for use with 3VA1 100/160
  • RS Stock No. 874-4442
  • Mfr. Part No. 3VA9088-0LB10
Each
$193.59(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 600A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 257-719
  • Mfr. Part No. 3VA5560-5GC42-0AA0
Each
$8,655.85(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 268-491
  • Mfr. Part No. 3VA6140-5KP31-2AA0
Each
$4,888.53(exc. GST)
In Stock
Siemens 3A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 395-503
  • Mfr. Part No. 3NC1003
Each (In a Pack of 10)
$31.782(exc. GST)
Last RS stock
Wickmann 2.6A Resettable Fuse, 6V dc
  • RS Stock No. 174-0802
  • Mfr. Part No. RF1411-000
Each (In a Pack of 20)
$0.786(exc. GST)
In Stock
RS PRO PC Board Non Resettable Fuse, Radial 1A, 250V ac
  • RS Stock No. 767-5049
Each (In a Pack of 10)
$0.691(exc. GST)
Temporarily out of stock
Siemens 30A Rail Mount Fuse Holder, 2P, 600V
  • RS Stock No. 225-5433
  • Mfr. Part No. 3NW7523-0HG
Each (In a Pack of 6)
$82.235(exc. GST)
Temporarily out of stock
Phoenix Contact 2 Phase Surge Protector, 10kA, DIN Rail Mount
  • RS Stock No. 201-6268
  • Mfr. Part No. 1065317
Each
$296.14(exc. GST)
Temporarily out of stock
Eaton NZM Electronic Circuit Breaker 250A NZM, 3 channels , Fixed
  • RS Stock No. 121-013
  • Mfr. Part No. 168453 NZMC3-S250-SVE
Each
$5,003.19(exc. GST)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 50A, Fixed
  • RS Stock No. 122-508
  • Mfr. Part No. LV510564
Each
$543.00(exc. GST)
Temporarily out of stock
Schneider Electric PowerPact J Nut for use with Circuit Breaker
  • RS Stock No. 438-892
  • Mfr. Part No. S37429
1 Pack of 2
$167.44(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 63A 3VA2, 3 channels
  • RS Stock No. 157-296
  • Mfr. Part No. 3VA2163-5MN36-0AA0
Each
$1,802.89(exc. GST)
Temporarily out of stock
Hager BD RCCB, 63A, 2P Pole, 30mA, Type A-HI
  • RS Stock No. 602-049
  • Mfr. Part No. BD263
Each
$1,433.18(exc. GST)
In Stock
Siemens 32A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 395-812
  • Mfr. Part No. 3NC1032
Each (In a Pack of 10)
$76.849(exc. GST)
1
264
1758
Results per page

Related links