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

65 of 999+
Being discontinued
RS PRO 500mA F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6029
Each (In a Pack of 10)
$0.509(exc. GST)
Limited stock
Littelfuse 3A Purple Blade Car Fuse, 32V dc
  • RS Stock No. 787-4148
  • Mfr. Part No. 0297003.WXNV
Each (In a Pack of 10)
$0.51(exc. GST)
Temporarily out of stock
Schneider Electric RCBO, 20A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C
  • RS Stock No. 341-549
  • Mfr. Part No. A9D27220
Each
$2,149.60(exc. GST)
In Stock
Eaton 1A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1379
  • Mfr. Part No. S506-1-R
Each (In a Pack of 10)
$0.666(exc. GST)
Limited stock
ETA Thermal Circuit Breaker - 1610 Single Pole 32V dc Voltage Rating, 15A Current Rating
  • RS Stock No. 409-895
  • Mfr. Part No. 1610-21-15A
Each
$20.90(exc. GST)
Temporarily out of stock
HENSEL Mi Distribution Board, 1 Way
  • RS Stock No. 276-5360
  • Mfr. Part No. Mi 1112
Each
$504.96(exc. GST)
In Stock
Bourns 0.5A Resettable Fuse, 15V
  • RS Stock No. 647-8156
  • Mfr. Part No. MF-MSMF050-2
Each (In a Pack of 10)
$0.508(exc. GST)
Temporarily out of stock
Wickmann 30A Base Mount Fuse Holder
  • RS Stock No. 174-0209
  • Mfr. Part No. PDM31001ZXM
Each (In a Box of 36)
$44.205(exc. GST)
In Stock
Schurter Thermal Circuit Breaker - T11 Single Pole 240V ac Voltage Rating, 4A Current Rating
  • RS Stock No. 284-5849
  • Mfr. Part No. 4400.0001
Each
$29.68(exc. GST)
In Stock
Schneider Electric, ComPacT MCCB 3P 400A, Fixed Mount
  • RS Stock No. 260-8090
  • Mfr. Part No. C40F32D400
Each
$7,402.97(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 A9F9 MCB, 2P, 32A, Type Z, 400V AC, 125V DC, 20 kA, 15 kA Breaking Capacity
  • RS Stock No. 211-2491
  • Mfr. Part No. A9F92232
Each
$298.17(exc. GST)
In Stock
Dehn Stainless Steel Lightning Earth Clamp Nominal Rod dia. 8-10mm
  • RS Stock No. 786-9358
  • Mfr. Part No. M8 UNI PV
Each
$45.43(exc. GST)
In Stock
Eaton 15A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 848-2744
  • Mfr. Part No. AGC-15-R
Each
$4.24(exc. GST)
Temporarily out of stock
Better World
Schneider Electric, Compression Lug MCCB 4P, Cable Mount
  • RS Stock No. 178-7905
  • Mfr. Part No. LV426979
Each
$109.81(exc. GST)
Temporarily out of stock
Hager 50A Cartridge Fuse, 14 x 51mm
  • RS Stock No. 250-8637
  • Mfr. Part No. LF450M
Each (In a Pack of 10)
$10.559(exc. GST)
In Stock
Schurter 25A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 703-2672
  • Mfr. Part No. 8020.0606.G
Each (In a Pack of 10)
$2.519(exc. GST)
In Stock
RS PRO 63A Rail Mount Fuse Holder for F2 Fuse, 415V ac
  • RS Stock No. 216-5351
Each
$47.44(exc. GST)
In Stock
Better World
Schneider Electric, Power Tag, 2mA, POWERTAG, 3W, Wired
  • RS Stock No. 248-3710
  • Mfr. Part No. A9XMC2D3
Each
$204.12(exc. GST)
Limited stock
ABB SN201 MCB, 1+N, 32A Curve C, 230V AC, 4.5 kA Breaking Capacity
  • RS Stock No. 186-3474
  • Mfr. Part No. 2CSS245102R0324
Each
$22.32(exc. GST)
Temporarily out of stock
Eaton xComfort Distribution Board Enclosure, 5 Way
  • RS Stock No. 257-090
  • Mfr. Part No. 281649 BC-O-1/5-TW-ECO
Each
$57.90(exc. GST)
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