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

139 of 999+
Better World
Schneider Electric Horizontal Distribution Busbar Trunking, 3m, 630A, Canalis KS Series
  • RS Stock No. 211-0481
  • Mfr. Part No. KSA630ED43010
Each
$5,383.59(exc. GST)
Phoenix Contact Surge Protector, 40A, 1000V dc
  • RS Stock No. 493-223
  • Mfr. Part No. 1153124
Each
$993.23(exc. GST)
Littelfuse Spring Brass PCB Mount Fuse Clip for 6.3 x 32mm Cartridge Fuse
  • RS Stock No. 787-4249
  • Mfr. Part No. 01020071Z
Each (In a Pack of 10)
$0.376(exc. GST)
Eaton 10A Bottle Fuse, 500V
  • RS Stock No. 229-229
  • Mfr. Part No. 10D27
1 Pack of 5
$13.43(exc. GST)
Eaton 800A Centred Tag Fuse, NH3, 440V ac
  • RS Stock No. 182-1522
  • Mfr. Part No. 800NHG3B
Each (In a Box of 3)
$116.267(exc. GST)
Eaton 30A Cartridge Fuse
  • RS Stock No. 228-692
  • Mfr. Part No. FNQ-30
1 Pack of 10
$1,031.33(exc. GST)
Phoenix Contact 5A Brown Automotive Car Fuse, 32V No
  • RS Stock No. 253-7606
  • Mfr. Part No. 2908367
Each (In a Pack of 2)
$19.49(exc. GST)
ABB Emax2 Electronic Circuit Breaker 2kA 1SDA07, 4 channels
  • RS Stock No. 259-4753
  • Mfr. Part No. 1SDA073033R1
Each
$27,134.01(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 800A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 257-597
  • Mfr. Part No. 3VA5580-5EC36-0AA0
Each
$10,068.61(exc. GST)
onsemi Thermal Fuse +125°C 3 A, 5V
  • RS Stock No. 195-8755
  • Mfr. Part No. NIS6350MT2TXG
Each (In a Pack of 250)
$2.081(exc. GST)
Eaton 6.3A Cartridge Fuses
  • RS Stock No. 254-876
  • Mfr. Part No. 24ADIHL6.3
Each
$2,400.23(exc. GST)
Littelfuse 30A Green Blade Car Fuse, 32V dc
  • RS Stock No. 787-4160P
  • Mfr. Part No. 0297030.WXNV
Each (Supplied in a Bag)
$0.493(exc. GST)
Phoenix Contact Surge Protector, 40A, 1000V dc, Wall Mount Mount
  • RS Stock No. 517-664
  • Mfr. Part No. 1251937
Each
$4,074.35(exc. GST)
WAGO 32A Fuse Holder for 10 x 38mm Fuse, 1P, 24V dc
  • RS Stock No. 279-1650
  • Mfr. Part No. 811-314
Each
$54.81(exc. GST)
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0288
  • Mfr. Part No. 8GK1061-4KK30
Each
$3,665.60(exc. GST)
Eaton 20A Ceramic Cartridge Fuse, 13 x 29mm
  • RS Stock No. 181-8488
  • Mfr. Part No. SMD20
1 Box of 20
$173.97(exc. GST)
Hager NFN MCB, 1P, 500mA Curve C, 230 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 597-901
  • Mfr. Part No. NFN100
Each
$105.06(exc. GST)
Schneider Electric ComPacT Control Unit for use with Compact NS630b to NS1600
  • RS Stock No. 429-421
  • Mfr. Part No. C5PWM
Each
$13,486.92(exc. GST)
RS PRO PC Board Non Resettable Fuse, Axial 1.5A, 125V ac/dc
  • RS Stock No. 764-9514
Each (In a Pack of 10)
$0.827(exc. GST)
Schneider Electric ComPacT Control Unit for use with Compact NS630b
  • RS Stock No. 347-120
  • Mfr. Part No. C2AFM
Each
$4,242.21(exc. GST)
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