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

173 of 999+
Temporarily out of stock
Eaton xEnergy Main Distribution Board
  • RS Stock No. 258-652
  • Mfr. Part No. 284104 XPBCB0804
Each
$864.12(exc. GST)
Temporarily out of stock
Siemens ALPHA Distribution Board
  • RS Stock No. 629-385
  • Mfr. Part No. 8GK1383-2KK53
Each
$2,445.66(exc. GST)
In Stock
Schurter SMD Non Resettable Fuse 5A, 125 V dc, 63V ac
  • RS Stock No. 782-3734
  • Mfr. Part No. 7010.9880.63
Each (In a Pack of 10)
$4.402(exc. GST)
Temporarily out of stock
Schurter SMD Non Resettable Fuse 4A, 63V ac/dc
  • RS Stock No. 188-4474
  • Mfr. Part No. 3-103-126
Each (On a Reel of 750)
$5.869(exc. GST)
In Stock
Mersen 2A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 188-7022
  • Mfr. Part No. H218714
Each (In a Pack of 10)
$6.83(exc. GST)
Currently unavailable
RS PRO SMD Non Resettable Fuse 30A, 250V
  • RS Stock No. 182-3947
1 Box of 2500
$9,772.71(exc. GST)
In Stock
Bourns 1.35A Resettable Fuse, 30V
  • RS Stock No. 647-8544P
  • Mfr. Part No. MF-R135
Each (Supplied in a Bag)
$0.547(exc. GST)
Temporarily out of stock
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)
In Stock
Better World
Schneider Electric Door Mounting Handle Plate for use with Manual Motor Control Switch
  • RS Stock No. 813-9358
  • Mfr. Part No. KZ81
Each (In a Pack of 2)
$115.19(exc. GST)
Temporarily out of stock
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0270
  • Mfr. Part No. 8GK1051-4KK10
Each
$1,658.02(exc. GST)
Temporarily out of stock
HENSEL KV Distribution Board, 63 A
  • RS Stock No. 276-5452
  • Mfr. Part No. KV 9220
Each
$269.72(exc. GST)
In Stock
RS PRO 1.6A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 721-1588
Each (In a Pack of 10)
$2.807(exc. GST)
In Stock
Mersen 500A German Standard Fuse, 31, 700V, 101.6mm
  • RS Stock No. 304-2489
  • Mfr. Part No. N300024
Each
$575.34(exc. GST)
In Stock
Siemens 50A Cartridge Fuse
  • RS Stock No. 210-6999
  • Mfr. Part No. 3NW6120-1
Each (In a Pack of 10)
$12.429(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 Acti9 iDT40T XA MCB, 3P, 10A Curve C, 400V AC
  • RS Stock No. 239-9978
  • Mfr. Part No. A9PA2310
Each
$385.31(exc. GST)
In Stock
Better World
Schneider Electric, PowerLogic, 2kA, Energy Sensor, 3VA, Wired
  • RS Stock No. 256-4054
  • Mfr. Part No. A9MEM1593
Each
$2,790.61(exc. GST)
In Stock
Mersen 4A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 188-7038
  • Mfr. Part No. W219232
Each (In a Pack of 10)
$5.255(exc. GST)
In Stock
Better World
Siemens 5SV3 RCCB, 16A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 124-7726
  • Mfr. Part No. 5SV3311-6
Each
$360.32(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60L MCB, 3P, 16A Curve C, 15 kA Breaking Capacity
  • RS Stock No. 219-9284
  • Mfr. Part No. A9F94316
Each
$407.33(exc. GST)
Temporarily out of stock
Eaton 160A NH Fuse, NH1, 690V ac
  • RS Stock No. 181-8626
  • Mfr. Part No. 160NHM1B-690
Each
$55.22(exc. GST)
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