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

176 of 999+
Temporarily out of stock
ABB ZLS728 Spare Parts for use with ZLS728
  • RS Stock No. 141-045
  • Mfr. Part No. 2CCS400900R0101
Each
$66.43(exc. GST)
Temporarily out of stock
Residual current circuit-breaker, 40A
  • RS Stock No. 611-296
  • Mfr. Part No. PFIM-63/4/003-XG/B
Each
$3,098.29(exc. GST)
Temporarily out of stock
Eaton IKA Standard Distribution Board Distribution Board
  • RS Stock No. 125-785
  • Mfr. Part No. 174204 IKA-1/6-OT
Each
$89.68(exc. GST)
Temporarily out of stock
Hager 80A Cartridge Fuse, 22.2 x 58mm
  • RS Stock No. 250-8654
  • Mfr. Part No. LF580M
Each (In a Pack of 10)
$21.401(exc. GST)
In Stock
RS PRO 400A British Standard Fuse, B4, 415V ac, 110mm
  • RS Stock No. 521-3009
Each
$133.64(exc. GST)
In Stock
Finder 3 Phase Surge Protector, 40kA, 275V ac
  • RS Stock No. 257-7421
  • Mfr. Part No. 7P2482751020
Each
$401.29(exc. GST)
In Stock
Schurter Surface Mount Fuse 1.6A, 250V ac
  • RS Stock No. 270-7954
  • Mfr. Part No. 3404.2418.11
Each
$5.02(exc. GST)
In Stock
Eaton PC Board Non Resettable Fuse, Radial 1.6A, 250V ac
  • RS Stock No. 769-3371
  • Mfr. Part No. SS-5F-1-6A-BK
Each (In a Pack of 5)
$2.41(exc. GST)
In Stock
SIBA 20A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 783-3399
  • Mfr. Part No. 70-059-60/20A
Each (In a Pack of 10)
$0.805(exc. GST)
Limited stock
ABB SN201 MCB, 1+N, 16A Curve C, 230V AC, 4.5 kA Breaking Capacity
  • RS Stock No. 186-3479
  • Mfr. Part No. 2CSS245202R0164
Each
$30.79(exc. GST)
Temporarily out of stock
Schneider Electric Load Centre KQ II B RCCB, 160A, 3P+N Pole
  • RS Stock No. 654-706
  • Mfr. Part No. SE160QRCD
Each
$4,024.13(exc. GST)
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 20A Curve B, 400V AC, 110V DC, 6 kA Breaking Capacity
  • RS Stock No. 746-7564
  • Mfr. Part No. 2CDS252001R0205 S202-B20
Each
$107.71(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 100/160 Circuit Breakers
  • RS Stock No. 260-9382
  • Mfr. Part No. C104MG063
Each
$533.67(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 250A 1SDA07, 3 channels
  • RS Stock No. 259-3980
  • Mfr. Part No. 1SDA072042R1
Each
$11,325.85(exc. GST)
Temporarily out of stock
RS PRO 10 A Panel Mount Fuse Holder, 1P for 5 x 20 mm, 250 V
  • RS Stock No. 277-3916
Each (In a Bag of 1000)
$7.579(exc. GST)
In Stock
ETA Thermal Circuit Breaker - 1610 Single Pole 32V dc Voltage Rating, 20A Current Rating
  • RS Stock No. 409-902
  • Mfr. Part No. 1610-21-20A
Each
$20.90(exc. GST)
In Stock
Schurter 16A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 384-055
  • Mfr. Part No. 3101.0020
Each (In a Pack of 5)
$7.88(exc. GST)
Temporarily out of stock
Siemens SENTRON Cover for use with 3VA2 100/160/250
  • RS Stock No. 210-9334
  • Mfr. Part No. 3VA9221-0WG30
Each
$183.29(exc. GST)
Temporarily out of stock
Eaton 100A NH Fuse, 58 x 30 x 135mm, 500V ac
  • RS Stock No. 248-667
  • Mfr. Part No. 100NHG01BI NH FUSE 100A 500V GL/GG SIZE 01
1 Pack of 3
$53.67(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 30A, Breaking Capacity 10 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-331
  • Mfr. Part No. 3VA5130-6EC31-0AA0
Each
$1,659.41(exc. GST)
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