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

34912 Products showing for Fuses & Circuit Breakers

76 of 999+
Temporarily out of stock
Siemens 3 Phase Surge Protector, 25kA, DIN Rail Mount
  • RS Stock No. 211-0188
  • Mfr. Part No. 5SD7444-1
Each
$3,360.65(exc. GST)
In Stock
Eaton 160A Centred Tag Fuse, NH00, 500V ac
  • RS Stock No. 703-8664
  • Mfr. Part No. 160NHG00B
Each
$24.95(exc. GST)
Currently unavailable
RS PRO 12.5A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 182-4034
Each (In a Pack of 5)
$8.33(exc. GST)
In Stock
Mersen 4A FF Cartridge Fuse, 10 x 38mm
  • RS Stock No. 136-0590
  • Mfr. Part No. W1014572 / FR10GR69V4
Each
$27.51(exc. GST)
In Stock
Schneider Electric Acti 9 Earth & Neutral Terminal Bar for use with Screw Support Busbar
  • RS Stock No. 187-807
  • Mfr. Part No. 99217
Each
$53.03(exc. GST)
Unavailable
Schneider Electric, ComPact MCCB Molded Case Circuit Breaker 3P 150A, Fixed Mount
  • RS Stock No. 221-1045
  • Mfr. Part No. LV433502
Each
$4,982.16(exc. GST)
In Stock
Schneider Electric Resi9 R9PF MCB, 3P, 10A, 400V AC, 3000 A Breaking Capacity
  • RS Stock No. 276-8966
  • Mfr. Part No. R9PFC710
Each
$198.57(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller Series NZM Terminal Extention for use with N(S)3, NZM3, PN3
  • RS Stock No. 241-145
  • Mfr. Part No. 100514 NZM3-XKV70
Each
$336.18(exc. GST)
Temporarily out of stock
SENTRON Cover Frame for use with 3VA53/54, 3VA63/64 Series
  • RS Stock No. 263-657
  • Mfr. Part No. 3VA9343-0SB20
Each
$379.10(exc. GST)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 2P, 2A Curve B, 400V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-308
  • Mfr. Part No. 5SY4202-6
Each
$166.35(exc. GST)
In Stock
Eaton 32A Cartridge Fuses, 14 x 51mm
  • RS Stock No. 228-594
  • Mfr. Part No. C14G32S
1 Pack of 10
$168.60(exc. GST)
Limited stock
Phoenix Contact Thermal Circuit Breaker - TCP 2A Single Pole 65 V dc, 250V ac Voltage Rating On Base Element, 2A
  • RS Stock No. 801-6902
  • Mfr. Part No. 0712217
Each
$50.22(exc. GST)
In Stock
Mersen 20A DI Diazed Fuse, E16 Thread Size, gG, 500V
  • RS Stock No. 377-0409
  • Mfr. Part No. Q215087
Each (In a Pack of 5)
$8.248(exc. GST)
In Stock
Eaton 17.5A T Cartridge Fuse, 21 x 57mm
  • RS Stock No. 182-1607
  • Mfr. Part No. LPJ-17-1-2SP
Each
$255.82(exc. GST)
In Stock
Eaton 125A Bolted Tag Fuse, 18 x 56mm, 150 V dc, 240 V ac, 41mm
  • RS Stock No. 182-1771
  • Mfr. Part No. 125LET
Each
$50.88(exc. GST)
Temporarily out of stock
Hager NFN MCB, 1P, 2A Curve C, 230 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 597-902
  • Mfr. Part No. NFN102
Each
$109.68(exc. GST)
In Stock
Eaton 100A Rail Mount Fuse Holder for A4 Fuse, 1P, 690V ac
  • RS Stock No. 182-1747
  • Mfr. Part No. RS100PH
Each
$248.69(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200M MCB, 2P, 13A Curve C, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 132-138
  • Mfr. Part No. 2CDS272001R0134 S202M-C13
Each
$144.74(exc. GST)
In Stock
Bulgin 10A Inline Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 414-601
  • Mfr. Part No. FX0380
Each (In a Pack of 5)
$13.024(exc. GST)
Limited stock
Eaton 50mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1666
  • Mfr. Part No. S506-50-R
Each (In a Pack of 10)
$2.097(exc. GST)
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