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

191 of 999+
Sensata Airpax Airpax Thermal Circuit Breaker - R11 Single Pole Panel Mount, 10A Current Rating
  • RS Stock No. 275-0449
  • Mfr. Part No. R11-2-10.0A-B06CV-V
1 Box of 10
$284.87(exc. GST)
RS PRO 2A British Standard Fuse, E1, 240V ac
  • RS Stock No. 521-2810
Each (In a Pack of 5)
$8.066(exc. GST)
RS PRO 7A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 911-3439
Each (In a Pack of 10)
$0.637(exc. GST)
Better World
Schneider Electric MCCB, Clip-On
  • RS Stock No. 178-7873
  • Mfr. Part No. LV426905
Each
$156.87(exc. GST)
Better World
Siemens, 0AA0 MCCB 3P 25A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 211-6051
  • Mfr. Part No. 3VA2025-6KP36-0AA0
Each
$3,004.47(exc. GST)
Schneider Electric Flexible Elbow Busbar Trunking, 290mm, 630A, Canalis Series
  • RS Stock No. 119-392
  • Mfr. Part No. KSA630DLF401
Each
$4,951.40(exc. GST)
Schneider Electric, ComPacT New Generation MCCB 3P 160A, Fixed Mount
  • RS Stock No. 260-7794
  • Mfr. Part No. C16L3
Each
$2,497.55(exc. GST)
Schurter 16A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 789-7808
  • Mfr. Part No. 0001.2516
Each (In a Bag of 10)
$1.257(exc. GST)
ABB Plastic Consumer Unit, IP65 1SLM006500A
  • RS Stock No. 286-4962
  • Mfr. Part No. 1SLM006500A2218
Each
$329.76(exc. GST)
Schneider Electric, ComPacT MCCB 3P 100A, Fixed Mount
  • RS Stock No. 260-7448
  • Mfr. Part No. C10V32D100
Each
$2,989.70(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)
Hager HMB MCB, 4P, 100A, 400V AC, 15 Breaking Capacity
  • RS Stock No. 602-108
  • Mfr. Part No. HMB490
Each
$2,334.78(exc. GST)
Schneider Electric, ComPacT new generation Circuit breaker 2P 160A, Breaking Capacity 18 kA, DIN Rail Mount
  • RS Stock No. 358-007
  • Mfr. Part No. C16F2TM160
Each
$2,456.17(exc. GST)
Vigi iC60 - earth leakage add-on block -
  • RS Stock No. 248-3706
  • Mfr. Part No. A9V15263
Each
$761.05(exc. GST)
Schurter Thermal Circuit Breaker - T12 Single Pole 28 V dc, 240V ac Voltage Rating Panel Mount, 10A Current Rating
  • RS Stock No. 173-8101
  • Mfr. Part No. 4410.9003
Each (In a Box of 10)
$71.159(exc. GST)
Phoenix Contact Thermal Circuit Breaker - CB TM2 2 Pole 80V dc Voltage Rating, 1A Current Rating
  • RS Stock No. 217-6366
  • Mfr. Part No. 2800869
Each
$192.27(exc. GST)
Better World
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 209-4904
  • Mfr. Part No. 3VA1112-6EE46-0AA0
Each
$1,905.34(exc. GST)
RS PRO Metal Lightning Earth Clamp
  • RS Stock No. 426-3126
Each (In a Pack of 10)
$5.513(exc. GST)
RS PRO 6.3A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 911-3473
Each (In a Pack of 10)
$0.40(exc. GST)
Better World
Siemens SIRIUS Electronic Circuit Breaker 1.25A 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 159-669
  • Mfr. Part No. 3RV2811-0KD10
Each
$892.49(exc. GST)
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