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

34933 Products showing for Fuses & Circuit Breakers

21 of 999+
RS PRO PC Board Non Resettable Fuse 6.3A, 250V ac
  • RS Stock No. 911-3568
Each (In a Pack of 10)
$0.486(exc. GST)
ETA Thermal Circuit Breaker - 1180 Single Pole 250V Voltage Rating DIN Rail Mount, 4A Current Rating
  • RS Stock No. 458-8712
  • Mfr. Part No. 1180-01-4A
Each
$37.74(exc. GST)
Littelfuse PC Board Non Resettable Fuse, Radial 5A, 250V ac
  • RS Stock No. 377-2203
  • Mfr. Part No. 3821500041
Each (In a Pack of 10)
$3.247(exc. GST)
Better World
Schneider Electric Acti 9 1 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2718
  • Mfr. Part No. A9XPH124
Each
$130.61(exc. GST)
Wickmann PC Board Non Resettable Fuse, Radial 1.6A, 250V ac
  • RS Stock No. 377-2146P
  • Mfr. Part No. 3821160041
Each (Supplied in a Bag)
$2.859(exc. GST)
ABB Blanking Plate for use with MCB
  • RS Stock No. 231-9623
  • Mfr. Part No. 2CDL000001R1220 SZ-BP 12G
1 Box of 1
$11.59(exc. GST)
Littelfuse 12.5A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 738-2810
  • Mfr. Part No. 021612.5MXP
Each (In a Pack of 10)
$2.673(exc. GST)
Eaton 20A DII Diazed Fuse, gG, 500V ac
  • RS Stock No. 181-8550
  • Mfr. Part No. 20D27
1 Box of 25
$715.07(exc. GST)
Wickmann 200A Inline Fuse Holder, 32V dc
  • RS Stock No. 174-0633
  • Mfr. Part No. 04980921GXM5
1 Pack of 1
$15.20(exc. GST)
Eaton 10A Inline Fuse Holder for 5 x 15mm Fuse, 32V dc
  • RS Stock No. 849-5594
  • Mfr. Part No. HHT
Each
$8.65(exc. GST)
Better World
ABB System Pro M Compact S200 MCB, 2P, 6A Curve D, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-7854
  • Mfr. Part No. 2CDS252001R0061 S202-D6
Each
$107.61(exc. GST)
Eaton 10A F Ceramic Cartridge Fuse, 6.3 x 25mm
  • RS Stock No. 412-598
  • Mfr. Part No. TDC180-10A
Each (In a Pack of 10)
$1.734(exc. GST)
RS PRO 5A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 911-3506
Each (In a Pack of 10)
$0.529(exc. GST)
Phoenix Contact CLIPLINE Thermal Circuit Breaker - UT 6-TMC Single Pole 250V Voltage Rating DIN Rail Mount, 5A Current
  • RS Stock No. 684-3591
  • Mfr. Part No. 0916607
Each
$37.82(exc. GST)
Better World
RS PRO 30A F Ceramic Solar PV Cartridge Fuse, 10 x 38mm
  • RS Stock No. 239-4984
Each (In a Pack of 10)
$19.122(exc. GST)
Better World
Siemens, 0AA0 MCCB 3P 160A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 211-5991
  • Mfr. Part No. 3VA1116-3EF32-0AA0
Each
$1,718.02(exc. GST)
Littelfuse SMD Non Resettable Fuse 250mA, 125V ac/dc
  • RS Stock No. 541-3338
  • Mfr. Part No. 0451.250MRL
Each (In a Pack of 10)
$2.369(exc. GST)
Hager RCBO, 16A Current Rating, 1P+N Poles, 10mA Trip Sensitivity, Type AC
  • RS Stock No. 602-215
  • Mfr. Part No. ACC816F
Each
$786.03(exc. GST)
RS PRO 5A FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 209-9383
Each (In a Pack of 10)
$4.75(exc. GST)
Schurter PC Board Non Resettable Fuse, Axial 1A, 125V ac/dc
  • RS Stock No. 110-8492
  • Mfr. Part No. 7010.7070.13
Each (In a Pack of 5)
$3.918(exc. GST)
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