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

178 of 999+
In Stock
Hager MJT MCB, 2P, 16A Curve C, 240 → 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 144-4950
  • Mfr. Part No. MJT716
Each
$50.88(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
Eaton 20A Inline Fuse Holder for 6.3 x 32mm Fuse, 600V
  • RS Stock No. 225-8213
  • Mfr. Part No. BK-HVI-R
Each
$94.96(exc. GST)
Temporarily out of stock
Hager Hager NFN Circuit Breaker, 1P, 4A Curve C, 230 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 599-907
  • Mfr. Part No. NFN104
Each
$107.69(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)
In Stock
Siemens SIRIUS 3 Phase Busbar, 690V, 45mm Pitch
  • RS Stock No. 246-5162
  • Mfr. Part No. 3RV1915-1DB
Each
$116.28(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)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 400A 3VA, 3 channels
  • RS Stock No. 156-691
  • Mfr. Part No. 3VA2340-7JQ32-0AA0
Each
$8,126.91(exc. GST)
In Stock
Bulgin 10A Inline Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 414-601
  • Mfr. Part No. FX0380
Each (In a Pack of 5)
$13.024(exc. GST)
Currently unavailable
Sato Parts 10A PCB Mount Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 372-1047
  • Mfr. Part No. F-100
Each (In a Pack of 5)
$3.426(exc. GST)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 600A, Fixed
  • RS Stock No. 122-319
  • Mfr. Part No. LV563326
Each
$1,361.76(exc. GST)
Temporarily out of stock
ABB Residual Current Release for use with Three-Pole XT1
  • RS Stock No. 192-0910
  • Mfr. Part No. 1SDA067123R1
Each
$2,151.41(exc. GST)
In Stock
RS PRO PC Board Non Resettable Fuse, Radial 2.5A, 250V
  • RS Stock No. 767-5159
Each (In a Pack of 10)
$0.462(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 C120N MCB, 3P, 80A Curve C, 440V AC, 375V DC, 10 kA, 20 kA Breaking Capacity
  • RS Stock No. 776-3064
  • Mfr. Part No. A9N18365
Each
$362.45(exc. GST)
In Stock
ABB System Pro M Compact S200 MCB, 1P, 20A Curve B, 253V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 488-6971
  • Mfr. Part No. 2CDS251001R0205 - S201B20
Each
$55.78(exc. GST)
Temporarily out of stock
Siemens 60A Fuse Holder, 1P, 600V
  • RS Stock No. 627-017
  • Mfr. Part No. 3NW7511-5HG
1 Pack of 6
$358.75(exc. GST)
In Stock
Siemens 2.5A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 218-3313
  • Mfr. Part No. 3NW1025-0HG
Each (In a Pack of 10)
$61.905(exc. GST)
Temporarily out of stock
ABB DDA200 RCD, 25A, 4 Pole, 300mA, Type AC
  • RS Stock No. 183-3654
  • Mfr. Part No. 2CSB204001R3250
Each
$215.78(exc. GST)
Temporarily out of stock
Eaton Phase Busbar 3 Phase Busbar, 277V
  • RS Stock No. 231-736
  • Mfr. Part No. 121983 BB-UL-18/3P-3M/57
Each
$174.96(exc. GST)
In Stock
Littelfuse Inline Fuse Holder for 10 x 47mm Fuse, 36V dc
  • RS Stock No. 787-4271P
  • Mfr. Part No. 276.5105.0002
Each (Supplied in a Bag)
$3.848(exc. GST)
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