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

160 of 999+
Temporarily out of stock
Better World
Schneider Electric Straight Busbar Trunking, 2m, 40A, KBB Series
  • RS Stock No. 219-8867
  • Mfr. Part No. KBB40ED44203W
Each
$699.13(exc. GST)
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 63A Curve B, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7582
  • Mfr. Part No. 2CDS252001R0635 S202-B63
Each
$135.32(exc. GST)
Temporarily out of stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - TeSyS GV 3 Pole 690V ac Voltage Rating, 80A Current Rating
  • RS Stock No. 175-1511
  • Mfr. Part No. GV4P80B
Each
$1,539.16(exc. GST)
In Stock
Eaton 20A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 852-7137
  • Mfr. Part No. MDL-20-R
Each
$11.93(exc. GST)
Temporarily out of stock
Lovato Single Phase Replacement cartridge, 50kA, DIN Rail Mount
  • RS Stock No. 248-5667
  • Mfr. Part No. SAX00PA320
Each
$332.71(exc. GST)
Limited stock
Bourns 1.85A Resettable Fuse, 33V
  • RS Stock No. 817-1655P
  • Mfr. Part No. MF-LSMF185/33X-2
Each (Supplied on a Reel)
$1.235(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 125mA, 125V
  • RS Stock No. 738-2905P
  • Mfr. Part No. 0154.125DR
Each (Supplied on a Reel)
$4.009(exc. GST)
In Stock
Eaton 25A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 703-8437P
  • Mfr. Part No. C14G25
Each (Supplied in a Box)
$8.465(exc. GST)
In Stock
Socomec 63A Cartridge Fuse, 22.2 x 58mm
  • RS Stock No. 252-5324
  • Mfr. Part No. 60630063
Each (In a Pack of 10)
$23.10(exc. GST)
Temporarily out of stock
Schneider Electric Altivar Process Modular Busbar Kit
  • RS Stock No. 119-420
  • Mfr. Part No. VW3A98BBMAAB
Each
$2,198.91(exc. GST)
In Stock
SIBA SMD Non Resettable Fuse 3.15A, 250V
  • RS Stock No. 736-2649P
  • Mfr. Part No. 160000.3,15
Each (Supplied on a Reel)
$3.251(exc. GST)
In Stock
Bourns SMD Non Resettable Fuse 2.5A, 32V dc
  • RS Stock No. 692-5009P
  • Mfr. Part No. SF-0603S250-2
Each (Supplied on a Reel)
$0.919(exc. GST)
In Stock
Schurter SMD Non Resettable Fuse 7A, 32 V ac, 63V dc
  • RS Stock No. 703-2773P
  • Mfr. Part No. 3413.0326.22
Each (Supplied on a Reel)
$0.884(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 3.5A, 125V
  • RS Stock No. 738-2851P
  • Mfr. Part No. 015403.5DR
Each (Supplied on a Reel)
$4.437(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 750mA, 63V dc
  • RS Stock No. 820-7101P
  • Mfr. Part No. 0438.750WR
Each (Supplied on a Reel)
$1.444(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 3A, 125V ac/dc
  • RS Stock No. 219-6248P
  • Mfr. Part No. 0154003.DRT
Each (Supplied on a Reel)
$4.463(exc. GST)
Temporarily out of stock
Clipsal Electrical MAX9 Busbar, 230V ac, 18mm Pitch
  • RS Stock No. 282-3902
  • Mfr. Part No. MX9B112N
Each
$61.83(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 12A, 65V
  • RS Stock No. 738-2936P
  • Mfr. Part No. 0451012.MRL
Each (Supplied on a Reel)
$2.822(exc. GST)
Temporarily out of stock
Eaton 160A Fuse Holder for NH00, NH000 Fuse, 3P, 440 V ac/dc, 690 V ac/dc
  • RS Stock No. 127-224
  • Mfr. Part No. 183038 XNH00-FCL-S160-BT2
Each
$331.46(exc. GST)
Currently unavailable
Schurter SMD Non Resettable Fuse 4A, 250 V ac, 125V dc
  • RS Stock No. 876-1942P
  • Mfr. Part No. 3404.2472.22
Each (Supplied on a Reel)
$1.834(exc. GST)
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