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

1723 of 999+
Temporarily out of stock
Phoenix Contact PTCB E1 Electronic Circuit Breaker 200mA 24V 13610, 1 channels , DIN Rail Mount Type E
  • RS Stock No. 518-060
  • Mfr. Part No. 1361049
Each
$52.39(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 250A Ekip Dip LI, 4 channels
  • RS Stock No. 259-4463
  • Mfr. Part No. 1SDA072671R1
Each
$13,392.07(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 6.3kA 1SDA07, 3 channels
  • RS Stock No. 259-4459
  • Mfr. Part No. 1SDA072658R1
Each
$120,244.19(exc. GST)
In Stock
Schneider Electric Acti9 iC60 RCCB, 16A, 4 Pole, 300mA, Type C, 380 → 415V ac
  • RS Stock No. 110-282
  • Mfr. Part No. A9D55416
Each
$2,106.13(exc. GST)
In Stock
Schneider Electric, ComPacT Circuit breaker 3P 100A, Breaking Capacity 25 KA, Fixed Mount
  • RS Stock No. 119-284
  • Mfr. Part No. C11B34V100B
Each
$4,804.32(exc. GST)
Temporarily out of stock
ABB OS Interlock for use with Switch Fuses
  • RS Stock No. 259-9732
  • Mfr. Part No. 1SCA106539R1001
Each
$194.18(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4095
  • Mfr. Part No. 3VA2116-7HM46-0AA0
Each
$4,680.97(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 600A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 249-470
  • Mfr. Part No. 3VA6560-7JT46-0AA0
Each
$17,872.33(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 1P 30A, Breaking Capacity 25 KA, Fixed Mount
  • RS Stock No. 119-405
  • Mfr. Part No. C10N1TM030
Each
$1,154.98(exc. GST)
Currently unavailable
Sato Parts 10A Rail Mount Fuse Holder for 6.3 x 32 mm, 6.35 x 30 x 6.35 x 31.8 mm Fuse, 1P, 250V
  • RS Stock No. 229-4965
  • Mfr. Part No. F-700-A
Each
$4.54(exc. GST)
Temporarily out of stock
Socomec 100A F Cartridge Fuse, 22 x 58mm
  • RS Stock No. 223-2816
  • Mfr. Part No. 60330100
Each (In a Pack of 10)
$9.43(exc. GST)
Limited stock
1-pole circuit breaker, 8A
  • RS Stock No. 577-476
  • Mfr. Part No. 1658-G21-02-P10-8A
Each
$10.08(exc. GST)
In Stock
Schneider Electric Acti9 Acti9 Reflex MCB, 3P, 16A Curve C, 230V AC, 24 And 48V DC, 30 kA Breaking Capacity
  • RS Stock No. 130-874
  • Mfr. Part No. A9C65316
Each
$2,999.16(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 2P 30A, Breaking Capacity 85 KA
  • RS Stock No. 119-603
  • Mfr. Part No. C10M2TM030
Each
$1,252.24(exc. GST)
In Stock
Schurter SMD Non Resettable Fuse 500mA, 125V ac/dc
  • RS Stock No. 733-4864P
  • Mfr. Part No. 3404.0112.22
Each (Supplied on a Reel)
$1.188(exc. GST)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-346
  • Mfr. Part No. 3VA6140-8KP31-2AA0
Each
$5,538.85(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-4033
  • Mfr. Part No. 3VA2110-8JP42-0AA0
Each
$4,659.16(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3784
  • Mfr. Part No. 3VA2040-7KP36-0AA0
Each
$4,199.70(exc. GST)
Temporarily out of stock
ABB End Stop for use with H6/24.DH, HD120/30.F10, HD185/36.F12, HD2.5/6, HD6/14, HD6/7.2G.3G, HD6/7.3G.2G, HD6/7.5G,
  • RS Stock No. 136-3870
  • Mfr. Part No. 1SNA168355R1300
Each
$10.67(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA 1SDA07, 4 / f channels
  • RS Stock No. 259-3915
  • Mfr. Part No. 1SDA071952R1
Each
$61,420.28(exc. GST)
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