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

133 of 999+
Eaton 6A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 703-8415
  • Mfr. Part No. C14G6
Each (In a Pack of 10)
$5.412(exc. GST)
Eaton 6A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 703-8415P
  • Mfr. Part No. C14G6
Each (Supplied in a Box)
$4.452(exc. GST)
Hager RCBO, 16A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type A-HI
  • RS Stock No. 251-2021
  • Mfr. Part No. ADH716F
Each
$579.73(exc. GST)
Phoenix Contact 3 Phase Surge Protector, 50kA, 1.9kV, DIN Rail Mount
  • RS Stock No. 890-3742
  • Mfr. Part No. 2905340
Each
$895.04(exc. GST)
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V Voltage Rating DIN Rail Mount, 65A Current
  • RS Stock No. 272-858
  • Mfr. Part No. GV3L65
Each
$425.63(exc. GST)
Better World
Schneider Electric Acti 9 C60H-DC MCB, 2P, 10A Curve C, 500V DC
  • RS Stock No. 772-1521
  • Mfr. Part No. A9N61528
Each
$189.97(exc. GST)
Schneider Electric ComPact Trip Unit for use with Compact NSX 100/160/250 circuit breakers
  • RS Stock No. 221-0929
  • Mfr. Part No. LV429116
Each
$3,080.06(exc. GST)
Better World
Schneider Electric TeSys TeSyS GV MCB, 3P, 7A, 690V AC, 50 kA Breaking Capacity
  • RS Stock No. 175-1428
  • Mfr. Part No. GV4L07N
Each
$1,420.42(exc. GST)
Mersen 32A Slow-Blow Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 247-2853
  • Mfr. Part No. P200757
1 Box of 10
$169.72(exc. GST)
Clipsal Electrical Surge Arrester, 40kA, 240V ac, DIN Rail Mount
  • RS Stock No. 282-3008
  • Mfr. Part No. MX9SP40C
Each
$94.67(exc. GST)
Mersen 400A Rail Mount Fuse Holder for NH2 Fuse, 3P, 690V ac
  • RS Stock No. 136-0631
  • Mfr. Part No. W1002129 / 1.000.504
Each
$1,023.00(exc. GST)
Eaton Eaton Moeller NZM Assembly Kit for use with N(S)1(-4), NZM1(-4), PN1(-4)
  • RS Stock No. 254-554
  • Mfr. Part No. 266626 NZM1-XHB
Each
$251.20(exc. GST)
Better World
Schneider Electric, ComPacT New Generation Circuit breaker 3P 80A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 254-6280
  • Mfr. Part No. C10B3TM080
Each
$948.94(exc. GST)
Legrand 400A Cartridge Fuse, 72 x 150mm
  • RS Stock No. 266-3195
  • Mfr. Part No. 0 178 75
1 Box of 3
$525.21(exc. GST)
Better World
Siemens, SENTRON Circuit breaker 4P 80A, DIN Rail Mount
  • RS Stock No. 224-7890
  • Mfr. Part No. 3VA1180-5GF42-0AA0
Each
$1,283.11(exc. GST)
Siemens 16A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 232-2005
  • Mfr. Part No. 3NC1016-0MK
Each (In a Pack of 20)
$26.227(exc. GST)
Eaton 10A gG/gL Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-176
  • Mfr. Part No. C10G10 CYLINDRICAL FUSE 10 x 38 10A GG 500V AC
1 Pack of 10
$21.05(exc. GST)
Schurter 3A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 173-7960
  • Mfr. Part No. 0090.0003
Each (In a Box of 10)
$23.63(exc. GST)
Wickmann Resettable Fuse, 125V ac/dc
  • RS Stock No. 174-0678
  • Mfr. Part No. 0251004.MRT1L
Each (In a Pack of 10)
$1.328(exc. GST)
Schurter PC Board Non Resettable Fuse, Radial 2.5A, 250V ac
  • RS Stock No. 173-9785
  • Mfr. Part No. 0034.6018
Each (In a Bag of 100)
$0.984(exc. GST)
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