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

1737 of 999+
Temporarily out of stock
Schurter 16A Panel Mount Fuse Holder for 5 x 20mm Fuse, 2P, 600V ac
  • RS Stock No. 144-1829
  • Mfr. Part No. 0031.9158
Each
$41.77(exc. GST)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - LEG6 Single Pole Panel Mount, 15A Current Rating
  • RS Stock No. 275-0338
  • Mfr. Part No. LEG6-1-62-15.0-01-V
1 Box of 5
$571.42(exc. GST)
In Stock
Mersen 200mA Time Lag Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 630-818
  • Mfr. Part No. J095550Q
1 Box of 10
$25.80(exc. GST)
Temporarily out of stock
Siemens SENTRON Interlock for use with 3VA51-54, 3VA61-64
  • RS Stock No. 161-611
  • Mfr. Part No. 3VA9088-0VM10
Each
$986.59(exc. GST)
In Stock
Littelfuse Non-Resettable Wire Ended Fuse 5A, 125V ac
  • RS Stock No. 738-2999
  • Mfr. Part No. 0471005.NRT1L
Each (In a Pack of 10)
$2.122(exc. GST)
In Stock
Eaton 8A Centred Tag Fuse
  • RS Stock No. 854-8998
  • Mfr. Part No. LPJ-8SP
Each
$148.54(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Busbar End Feed Unit, Canalis KS Series
  • RS Stock No. 211-0473
  • Mfr. Part No. KSA630ABD4
Each
$5,747.50(exc. GST)
Limited stock
SIBA 6.3A M Ceramic Cartridge Fuse, 5 x 25mm
  • RS Stock No. 267-3492
  • Mfr. Part No. 70-010-05/6.3A
Each (In a Pack of 5)
$9.234(exc. GST)
In Stock
Eaton 160A Rail Mount Fuse Holder for 00 Fuse, 3P, 690V ac
  • RS Stock No. 765-2967
  • Mfr. Part No. TD00-D
Each
$265.29(exc. GST)
In Stock
Eaton 200A Bolted Tag Fuse, A4, 350 V dc, 660V ac, 94mm
  • RS Stock No. 182-1544
  • Mfr. Part No. TFP200M250
Each
$386.39(exc. GST)
In Stock
Siemens 32A F Cartridge Fuse, 10 x 38mm
  • RS Stock No. 203-2029
  • Mfr. Part No. 3NW6012-1
Each (In a Pack of 20)
$12.71(exc. GST)
Temporarily out of stock
ABB Accessories MS116/MS132 3 Phase Busbar, 690V ac
  • RS Stock No. 259-5996
  • Mfr. Part No. 1SAM201916R1115
Each
$70.39(exc. GST)
In Stock
RS PRO 7.5A Brown Blade Car Fuse, 32V dc
  • RS Stock No. 177-8137
Each (In a Pack of 50)
$0.433(exc. GST)
In Stock
Fuse holder PTF ø5x20mm
  • RS Stock No. 283-5234
  • Mfr. Part No. 696211000000
Each
$5.54(exc. GST)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 400A 3VA2, 3 channels
  • RS Stock No. 156-622
  • Mfr. Part No. 3VA2440-8HN32-0AA0
Each
$8,262.01(exc. GST)
Temporarily out of stock
160A Bolted Tag Fuse, 7.4 x 11 x 16.8mm, 690V ac
  • RS Stock No. 262-583
  • Mfr. Part No. TBS00-D
Each
$85.71(exc. GST)
Temporarily out of stock
WAGO Electronic Circuit Breaker 6A 24V 787, 4 channels , DIN Rail
  • RS Stock No. 279-4106
  • Mfr. Part No. 787-1664/006-1054
Each
$903.78(exc. GST)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 50A, Fixed
  • RS Stock No. 122-515
  • Mfr. Part No. LV510574
Each
$593.91(exc. GST)
Temporarily out of stock
xComfort Distribution Board
  • RS Stock No. 263-486
  • Mfr. Part No. 302413 KLV-60HWP-SF
Each
$781.72(exc. GST)
Temporarily out of stock
nVent ERICO Neutral Double Busbar Busbar
  • RS Stock No. 646-810
  • Mfr. Part No. 568717
Each
$11.14(exc. GST)
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