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

170 of 999+
Schurter PC Board Non Resettable Fuse, Axial 3A, 125V ac/dc
  • RS Stock No. 110-8521
  • Mfr. Part No. 7010.7110.13
Each (In a Pack of 5)
$1.26(exc. GST)
Siemens 230V ac Circuit Trip
  • RS Stock No. 622-0654
  • Mfr. Part No. 5TT4102-0
Each
$153.36(exc. GST)
WJ Furse Copper Earth Bar L. 475mm x W. 90mm x H. 96mm 6 Ways
  • RS Stock No. 124-2500
  • Mfr. Part No. 7TCA083670R0676 LK243-6
Each
$510.11(exc. GST)
Mersen 16A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 188-7000
  • Mfr. Part No. G200750
Each (In a Pack of 10)
$4.869(exc. GST)
RS PRO 160A British Standard Fuse, B2, 415V ac, 111mm
  • RS Stock No. 521-2753
Each
$76.82(exc. GST)
Schneider Electric Acti9 iID RCCB, 100A, 2 Pole, 300mA, Type AC, 220 → 240V ac
  • RS Stock No. 654-824
  • Mfr. Part No. SEA9R14291
Each
$838.09(exc. GST)
ETA Thermal Circuit Breaker - 1616 Single Pole 32V Voltage Rating, 25A Current Rating
  • RS Stock No. 729-2745
  • Mfr. Part No. 1616-21-25A
Each
$28.95(exc. GST)
Schurter SMD Non Resettable Fuse 10A, 125V ac/dc
  • RS Stock No. 209-9407
  • Mfr. Part No. 3-122-716
Each
$11.07(exc. GST)
RS PRO SMD Non-Resettable Surface Mount Fuse 12A, 63V
  • RS Stock No. 252-2156
Each (On a Tape of 4000)
$0.736(exc. GST)
Eaton 40A Tan Blade Car Fuse, 32 V ac, 80 Vdc
  • RS Stock No. 849-5866
  • Mfr. Part No. ANL-40
Each (In a Pack of 5)
$204.12(exc. GST)
Bourns Thermal Fuse 50 A, 12V
  • RS Stock No. 258-6384
  • Mfr. Part No. P-TCO-N450/12-2
Each (In a Pack of 10)
$1.141(exc. GST)
Schneider Electric RCBO, 6A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Resi9 Range
  • RS Stock No. 335-282
  • Mfr. Part No. R9D87806
Each
$206.26(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 800A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 257-485
  • Mfr. Part No. 3VA5580-1BB66-0AA0
Each
$11,683.18(exc. GST)
Schneider Electric ComPact Long Terminal Shield for use with Circuit Breaker
  • RS Stock No. 230-6616
  • Mfr. Part No. 33628
Each
$182.82(exc. GST)
RS PRO 50A Bolted Tag Fuse, A3, 690V ac, 73mm
  • RS Stock No. 221-3717
Each
$24.20(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 70 kA
  • RS Stock No. 209-6875
  • Mfr. Part No. 3VA1216-6EF32-0AA0
Each
$1,975.53(exc. GST)
RS PRO 40A Bolted Tag Fuse, 350 V dc, 690V ac, 63.5mm
  • RS Stock No. 221-3659
Each
$31.26(exc. GST)
Legrand 5A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 266-3068
  • Mfr. Part No. 0 102 50
1 Box of 10
$35.45(exc. GST)
Eaton 63A D02 Neozed Fuse, gG, 400V ac
  • RS Stock No. 181-8787
  • Mfr. Part No. 63NZ02
Each
$11.32(exc. GST)
Schneider Electric, NSX Range MCCB 3P 160A, Breaking Capacity 90 kA, Fixed Mount
  • RS Stock No. 849-4359
  • Mfr. Part No. LV430840
Each
$1,045.62(exc. GST)
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