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

314 of 999+
In Stock
Siemens 2A Centred Tag Fuse, NH000, 690V
  • RS Stock No. 210-6900
  • Mfr. Part No. 3NA3802-6
Each (In a Pack of 3)
$109.033(exc. GST)
Temporarily out of stock
Eaton 800A Centred Tag Fuse, NH4, 500V ac
  • RS Stock No. 182-1529
  • Mfr. Part No. 800NHG4G
Each
$530.28(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 3 channels
  • RS Stock No. 259-4237
  • Mfr. Part No. 1SDA072360R1
Each
$23,714.37(exc. GST)
In Stock
Eaton 10A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8500P
  • Mfr. Part No. C10M10
Each (Supplied in a Box)
$40.185(exc. GST)
In Stock
Siemens Sirius Innovation Wiring Kit for use with Reversing Starter S2
  • RS Stock No. 875-1028
  • Mfr. Part No. 3RA2933-2AA1
Each
$182.61(exc. GST)
In Stock
Better World
ABB Compact Home SH200 MCB, 1P, 16A Curve B, 440V AC, 60V DC, 6 kA Breaking Capacity
  • RS Stock No. 539-8150
  • Mfr. Part No. 2CDS211001R0165 SH201-B16
Each
$37.64(exc. GST)
Temporarily out of stock
Siemens SIRIUS Plug for use with 3RF20/21/22/23/24
  • RS Stock No. 161-260
  • Mfr. Part No. 3RF2900-2TA88
Each (In a Pack of 50)
$7.586(exc. GST)
In Stock
Phoenix Contact TRABTECH Electronic Circuit breaker 6A 24V CB E1, On Base Element
  • RS Stock No. 768-1079
  • Mfr. Part No. 2800905
Each
$108.53(exc. GST)
In Stock
Circuit Breaker,6 A,1
  • RS Stock No. 559-693
  • Mfr. Part No. PLSM-C6-Q-MW
Each
$68.40(exc. GST)
Temporarily out of stock
Eaton 4A Ceramic Cartridge Fuse, 13 x 29mm
  • RS Stock No. 182-1707
  • Mfr. Part No. SMD4
Each
$11.15(exc. GST)
Temporarily out of stock
Better World
Siemens SIRIUS Electronic Circuit Breaker 320mA 3RV2, 3 channels , DIN Rail Mount
  • RS Stock No. 160-268
  • Mfr. Part No. 3RV2411-0DA15
Each
$522.96(exc. GST)
Unavailable
Schneider Electric ComPact Trip Unit for use with Compact NSX 100/160/250 circuit breakers
  • RS Stock No. 221-0927
  • Mfr. Part No. LV429111
Each
$3,661.37(exc. GST)
Temporarily out of stock
Schurter SMD Non Resettable Fuse 3.15A, 250 V ac, 125V dc
  • RS Stock No. 876-1949P
  • Mfr. Part No. 3404.2471.22
Each (Supplied on a Reel)
$1.834(exc. GST)
Temporarily out of stock
Siemens 230V ac Circuit Trip
  • RS Stock No. 223-7619
  • Mfr. Part No. 5TT4405-0
Each
$173.89(exc. GST)
In Stock
Schneider Electric Acti9 SE10 MCB Mini Circuit Breaker, 3P, 50A Curve D, 415V AC, 10000 A Breaking Capacity
  • RS Stock No. 339-678
  • Mfr. Part No. SE10D350
Each
$302.35(exc. GST)
Temporarily out of stock
Siemens 80A DIV Diazed Fuse, gG, 500V ac
  • RS Stock No. 396-023
  • Mfr. Part No. 5SC211
Each (In a Pack of 3)
$67.333(exc. GST)
In Stock
TE Connectivity Thermal Circuit Breaker - W28 Single Pole 32 V dc, 250V ac Voltage Rating, 750mA Current Rating
  • RS Stock No. 782-6590
  • Mfr. Part No. W28-XQ1A-0.75
Each
$19.79(exc. GST)
In Stock
Better World
Schneider Electric Acti 9 C120H MCB, 4P, 100A Curve C, 440V AC, 500V DC, 15 kA, 30 kA Breaking Capacity
  • RS Stock No. 776-3032
  • Mfr. Part No. A9N18480
Each
$1,301.25(exc. GST)
Temporarily out of stock
Eaton CI-K Enclosure for use with PKZM0
  • RS Stock No. 272-2320
  • Mfr. Part No. 260366 CI-K2H-PKZ0-GV
Each
$53.06(exc. GST)
In Stock
Schurter 16A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 384-061
  • Mfr. Part No. 3101.0025
Each (In a Pack of 5)
$6.756(exc. GST)
1
314
1758
Results per page

Related links