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

34933 Products showing for Fuses & Circuit Breakers

16 of 999+
Mersen 63mA Time Lag Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 630-862
  • Mfr. Part No. D090531Q
1 Box of 10
$28.66(exc. GST)
Schurter Thermal Circuit Breaker - TA45 2 Pole 60 V dc, 240V ac Voltage Rating Panel Mount, 6A Current Rating
  • RS Stock No. 868-9106
  • Mfr. Part No. 4430.0990
Each
$95.50(exc. GST)
SIBA 32A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 247-4217
  • Mfr. Part No. 50-124-06/32A
Each
$23.47(exc. GST)
Better World
ABB System Pro M Compact S200 MCB, 1P, 6A Curve D, 253V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 527-9453
  • Mfr. Part No. 2CDS251001R0061 S201-D6
Each
$41.82(exc. GST)
Better World
Schneider Electric Acti 9 3 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2742
  • Mfr. Part No. A9XPH412
Each
$193.61(exc. GST)
RS PRO 4A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 610-9995
Each (In a Pack of 10)
$0.954(exc. GST)
Socomec 32A Neutral Link for Cylindrical Fuses, 10mm x 38mm
  • RS Stock No. 122-5270
  • Mfr. Part No. 60190000
Each (In a Pack of 10)
$3.714(exc. GST)
Schurter 500mA F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 167-7847
  • Mfr. Part No. 0001.1001
Each (In a Pack of 10)
$1.923(exc. GST)
SIBA 315mA FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 736-1412
  • Mfr. Part No. 70-172-40/0.315A
Each
$13.57(exc. GST)
Littelfuse SMD Non Resettable Fuse 15A, 65V
  • RS Stock No. 738-2933
  • Mfr. Part No. 0451015.MRL
Each (In a Pack of 10)
$3.309(exc. GST)
SIBA 1A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3220
  • Mfr. Part No. 70-007-33/1A
Each (In a Pack of 10)
$1.355(exc. GST)
Better World
ABB System Pro M Compact S200M MCB, 2P, 50A Curve C, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 132-021
  • Mfr. Part No. 2CDS272001R0504 S202M-C50
Each
$142.77(exc. GST)
TE Connectivity Thermal Circuit Breaker - W23 Single Pole 50 V dc, 250V ac Voltage Rating, 5A Current Rating
  • RS Stock No. 782-0886
  • Mfr. Part No. W23-X1A1G-5
Each
$69.34(exc. GST)
ETA Thermal Circuit Breaker - 2-5700 Single Pole 250V Voltage Rating Panel Mount, 25A Current Rating
  • RS Stock No. 406-9491
  • Mfr. Part No. 2-5700-IG1-P10-DD-000040-25A
Each
$72.33(exc. GST)
TE Connectivity Thermal Circuit Breaker - W51 Single Pole 250V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 782-8044
  • Mfr. Part No. W51-A122B1-10
Each
$15.96(exc. GST)
Littelfuse 32mA T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 725-8057
  • Mfr. Part No. 0218.032MXP
Each (In a Bag of 10)
$4.666(exc. GST)
Legrand 20A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 180-6120
  • Mfr. Part No. 0 133 20
Each (In a Box of 10)
$5.292(exc. GST)
Eaton 25A D02 Bottle Fuse, 400V
  • RS Stock No. 228-736
  • Mfr. Part No. 25NZ02 FUSE-D02 25A T GL/GG 400VAC E18
1 Pack of 10
$29.74(exc. GST)
Littelfuse PC Board Non Resettable Fuse, Axial 1.5A, 125V ac
  • RS Stock No. 787-4334P
  • Mfr. Part No. 025101.5MAT1L
Each (Supplied in a Bag)
$1.786(exc. GST)
Schneider Electric Earth Bar L. 450mm x W. 13mm x H. 12mm
  • RS Stock No. 276-8807
  • Mfr. Part No. LVS04200
Each
$251.63(exc. GST)
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