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

186 of 999+
In Stock
nVent ERIFLEX ERIFLEX Busbar, 18mm Pitch
  • RS Stock No. 277-6090
  • Mfr. Part No. 549230
Each (In a Pack of 10)
$60.74(exc. GST)
Temporarily out of stock
Phoenix Contact CAPAROC E2 Electronic Circuit Breaker 1 → 4A 12 V, 24 V, 2 channels , DIN Rail Mount Type E
  • RS Stock No. 517-594
  • Mfr. Part No. 1344361
Each
$180.26(exc. GST)
In Stock
nVent ERIFLEX ERIFLEX Busbar, 20mm Pitch
  • RS Stock No. 277-6088
  • Mfr. Part No. 549210
Each (In a Pack of 4)
$177.655(exc. GST)
In Stock
Eaton 500mA T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 851-1693
  • Mfr. Part No. FNQ-R-1/2
Each
$160.46(exc. GST)
In Stock
Siemens Fuse Holder Fuse Block
  • RS Stock No. 163-285
  • Mfr. Part No. 5SF1260
1 Pack of 3
$76.24(exc. GST)
Temporarily out of stock
Eaton 2A Tag Fuse, 550V ac
  • RS Stock No. 229-146
  • Mfr. Part No. NSD2
1 Pack of 20
$361.06(exc. GST)
In Stock
ETI 20A DII Diazed Fuse, E27 Thread Size, gG - gL, 500V ac
  • RS Stock No. 413-670
  • Mfr. Part No. 2312406
Each (In a Pack of 5)
$3.286(exc. GST)
In Stock
Siemens 63A Bottle Fuse Holder, 1P, 400V ac
  • RS Stock No. 622-0711
  • Mfr. Part No. 5SG1701
Each
$37.73(exc. GST)
Temporarily out of stock
Schneider Electric Altivar Process Modular Busbar, 380 → 480V
  • RS Stock No. 578-327
  • Mfr. Part No. VW3A98ABPDCE1
Each
$348.29(exc. GST)
Temporarily out of stock
Siemens 4A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 232-2022
  • Mfr. Part No. 3NW1040-0HG
Each (In a Pack of 10)
$46.278(exc. GST)
Temporarily out of stock
Siemens Sentron Trip alarm switch for use with 3VA1 And 3VA20 Up To 3VA25
  • RS Stock No. 226-2843
  • Mfr. Part No. 3VA9988-0AB13
Each
$150.46(exc. GST)
Temporarily out of stock
Eaton IZMX16H4-P06F-1 Electronic Circuit Breaker 630A , Fixed
  • RS Stock No. 127-744
  • Mfr. Part No. 183452 IZMX16H4-P06F-1
Each
$21,424.79(exc. GST)
Temporarily out of stock
Eaton Eaton Moeller NZM Rotary Handle for use with N(S)3(-4), NZM3(-4), PN3(-4)
  • RS Stock No. 255-548
  • Mfr. Part No. 260129 NZM3-XDV
Each
$260.95(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 iC60L MCB, 1P, 3A Curve C, 15 kA Breaking Capacity
  • RS Stock No. 219-9262
  • Mfr. Part No. A9F94103
Each
$256.76(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 3A Curve C, 230V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 746-7643
  • Mfr. Part No. 2CDS251001R0034 S201-C3
Each
$48.60(exc. GST)
Temporarily out of stock
63A Fuse Holder for 36 x 71 x 81mm Fuse, 3P, 400V
  • RS Stock No. 262-601
  • Mfr. Part No. TFN02C
1 Pack of 5
$282.50(exc. GST)
In Stock
Siemens 40A Cartridge Fuse, 14 x 51mm
  • RS Stock No. 396-253
  • Mfr. Part No. 3NC1440
Each (In a Pack of 10)
$50.633(exc. GST)
In Stock
RS PRO 32A Solid Link for F1 Fuses
  • RS Stock No. 242-1128
Each (In a Pack of 5)
$4.472(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4726
  • Mfr. Part No. 3VA2163-6JQ42-0AA0
Each
$4,170.43(exc. GST)
In Stock
Littelfuse 6.3A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 787-4296P
  • Mfr. Part No. 35616300029
Each (Supplied in a Bag)
$3.858(exc. GST)
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