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

34925 Products showing for Fuses & Circuit Breakers

18 of 999+
Littelfuse PC Board Non Resettable Fuse, Axial 4A, 125V ac/dc
  • RS Stock No. 125-6894
  • Mfr. Part No. 0251004.HAT1L
Each (In a Pack of 10)
$1.83(exc. GST)
Schneider Electric, ComPacT New Generation MCCB 3P 150A, Fixed Mount
  • RS Stock No. 260-7779
  • Mfr. Part No. C16H3MA150
Each
$2,645.46(exc. GST)
RS PRO 500mA FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 721-1563
Each (In a Pack of 10)
$5.665(exc. GST)
Eaton 4A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1329
  • Mfr. Part No. S506-4-R
Each (In a Pack of 10)
$0.517(exc. GST)
RS PRO 400mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-671
Each (In a Pack of 10)
$0.902(exc. GST)
Siemens 10A NH Fuse, NH000, 500V ac
  • RS Stock No. 395-721
  • Mfr. Part No. 3NA6803
Each (In a Pack of 3)
$18.163(exc. GST)
Littelfuse 4A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 738-3135
  • Mfr. Part No. 0KLK004.T
Each
$72.88(exc. GST)
WAGO Electronic Circuit Breaker 10A 24V 787, 4 channels , DIN Rail
  • RS Stock No. 303-297
  • Mfr. Part No. 787-3664
Each
$360.98(exc. GST)
Legrand 2A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 180-6107
  • Mfr. Part No. 0 130 02
Each (In a Box of 10)
$5.342(exc. GST)
ABB System Pro M Compact S200 MCB, 1P, 32A Curve B, 253V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 488-6943
  • Mfr. Part No. 2CDS251001R0325 - S201B32
Each
$47.20(exc. GST)
WAGO Electronic Circuit Breaker 10A 24V 787, 8 channels , DIN Rail
  • RS Stock No. 279-4108
  • Mfr. Part No. 787-1668
Each
$1,032.97(exc. GST)
Littelfuse Non-Resettable Surface Mount Fuse 60A, 250V ac
  • RS Stock No. 229-1426
  • Mfr. Part No. 0456060.DRSDE
Each
$11.70(exc. GST)
ABB 100A Centred Tag Fuse, NH000, 500V
  • RS Stock No. 779-9978
  • Mfr. Part No. OFAF000H100 1SCA022627R1550
Each
$14.37(exc. GST)
HENSEL ENYBOARD Distribution Board, 75 A
  • RS Stock No. 117-294
  • Mfr. Part No. KV FC 24
Each
$130.96(exc. GST)
SIBA 3.15A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 418-9551
  • Mfr. Part No. 70-059-61/3.15A
Each (In a Pack of 10)
$1.856(exc. GST)
RS PRO 6.3A FF Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 420-123
Each (In a Pack of 10)
$0.33(exc. GST)
Schneider Electric TeSys Thermal Magnetic Circuit Breaker - GB2 1P + N Pole 250V ac Voltage Rating DIN Rail Mount, 2A
  • RS Stock No. 323-9009
  • Mfr. Part No. GB2CD07
Each
$113.11(exc. GST)
Eaton 30A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 458-8582
  • Mfr. Part No. KTK-30
Each (In a Pack of 5)
$95.042(exc. GST)
Mersen 2A DI Diazed Fuse, E16 Thread Size, gG, 500V
  • RS Stock No. 377-0342
  • Mfr. Part No. W212539
Each (In a Pack of 5)
$6.328(exc. GST)
Legrand 4A M Ceramic Cartridge Fuse, 8 x 32mm
  • RS Stock No. 266-3080
  • Mfr. Part No. 0 120 04
1 Box of 10
$52.92(exc. GST)
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