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

262 of 999+
Temporarily out of stock
Eaton Eaton xEnergy Safety Busbar Support for use with CI43…, Modular Busbar System, Prepared Enclosures
  • RS Stock No. 243-870
  • Mfr. Part No. 044005 SE-RS-I43
Each
$161.04(exc. GST)
In Stock
Hager Push Button Circuit Trip for use with Modular Devices
  • RS Stock No. 144-4654
  • Mfr. Part No. SVN351
Each
$91.70(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti 9 A9F9 MCB, 2P, 40A, Type Z, 400V AC, 125V DC, 20 kA, 15 kA Breaking Capacity
  • RS Stock No. 211-2493
  • Mfr. Part No. A9F92240
Each
$473.88(exc. GST)
Temporarily out of stock
Schneider Electric Cross Elbow Busbar Trunking, 2m, 630A, Canalis Series
  • RS Stock No. 335-018
  • Mfr. Part No. KSA630EV4203
Each
$3,852.76(exc. GST)
Temporarily out of stock
Siemens 63A Fuse Holder for 22 x 127mm Fuse, 1P, 1.5kV
  • RS Stock No. 626-996
  • Mfr. Part No. 3NC2391-0MK
1 Pack of 4
$1,079.78(exc. GST)
In Stock
Siemens Auxiliary Contact, 6 Contact, 2NC + 4NO, Side Mount, SENTRON
  • RS Stock No. 874-4534
  • Mfr. Part No. 3VA9988-0AA11
Each
$150.46(exc. GST)
Temporarily out of stock
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC 2 Pole 250V ac Voltage Rating DIN Rail, 5A Current Rating
  • RS Stock No. 135-908
  • Mfr. Part No. 0915030
1 Pack of 3
$843.67(exc. GST)
In Stock
Wickmann 10A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 174-0736
  • Mfr. Part No. 0312010.MXP
Each (In a Pack of 20)
$0.781(exc. GST)
Temporarily out of stock
Eaton 2A Cartridge Fuse, 14 x 85mm
  • RS Stock No. 228-620
  • Mfr. Part No. AAO2
1 Pack of 20
$502.48(exc. GST)
In Stock
Wickmann 4A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 174-0651
  • Mfr. Part No. 0312004.MXP
Each (In a Pack of 20)
$0.647(exc. GST)
In Stock
Eaton 10A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8232P
  • Mfr. Part No. PV-10A10F
Each (Supplied in a Box)
$95.25(exc. GST)
Temporarily out of stock
Phoenix Contact Thermal Circuit Breaker - CB TM2 2 Pole 240V ac Voltage Rating, 500mA Current Rating
  • RS Stock No. 217-6374
  • Mfr. Part No. 2800879
Each
$192.27(exc. GST)
In Stock
Schurter 30A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 712-4784P
  • Mfr. Part No. 0090.0030
Each (Supplied in a Box)
$33.04(exc. GST)
Limited stock
SIBA 30A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 314-4844
  • Mfr. Part No. 50-179-06/30A
Each (In a Pack of 5)
$23.996(exc. GST)
In Stock
Schurter 30A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 703-2675P
  • Mfr. Part No. 8020.0607.G
Each (Supplied in a Box)
$2.019(exc. GST)
In Stock
Phoenix Contact Thermal Circuit Breaker - CB TM2 2 Pole 80V dc Voltage Rating, 16A Current Rating
  • RS Stock No. 217-6372
  • Mfr. Part No. 2800878
Each
$178.51(exc. GST)
Temporarily out of stock
Bourns Thermal Fuse +77°C 50 A, 28V
  • RS Stock No. 258-6404
  • Mfr. Part No. SC77AAA
Each (In a Bag of 5000)
$1.159(exc. GST)
In Stock
Legrand 500mA M Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 266-3098
  • Mfr. Part No. 0 130 95
1 Box of 10
$57.24(exc. GST)
Last RS stock
Wickmann 1.6A Resettable Fuse, 72 V ac, 72V dc
  • RS Stock No. 174-0795
  • Mfr. Part No. RF2637-000
Each (In a Pack of 20)
$1.066(exc. GST)
Temporarily out of stock
Eaton Eaton xEnergy Main Busbar Support for use with Busbar
  • RS Stock No. 241-430
  • Mfr. Part No. 133074 XNNS-30X20X1300
1 Pack of 5
$924.91(exc. GST)
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