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

292 of 999+
Temporarily out of stock
ABB IEC Range Busbar for use with DDA200, F200, S200
  • RS Stock No. 250-4745
  • Mfr. Part No. 2CDL230002R1009
Each
$52.26(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 3.2kA 1SDA07, 3 channels
  • RS Stock No. 259-4346
  • Mfr. Part No. 1SDA072516R1
Each
$37,690.16(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA 1SDA07, 3 channels
  • RS Stock No. 259-4398
  • Mfr. Part No. 1SDA072580R1
Each
$65,567.44(exc. GST)
Temporarily out of stock
Better World
Schneider Electric Acti9 1 Phase Busbar, 230 V, 400 V, 9mm Pitch
  • RS Stock No. 238-4092
  • Mfr. Part No. A9XPP724
Each (In a Pack of 6)
$278.755(exc. GST)
Temporarily out of stock
Siemens 630A Tag Fuse, NH3, 1kV
  • RS Stock No. 608-737
  • Mfr. Part No. 3NC3336-1U
1 Pack of 3
$1,439.71(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 4P 125A, Fixed Mount
  • RS Stock No. 260-7792
  • Mfr. Part No. C16H4TM125
Each
$3,493.45(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 6.3kA 1SDA07, 3 channels
  • RS Stock No. 259-4455
  • Mfr. Part No. 1SDA072655R1
Each
$113,553.65(exc. GST)
Temporarily out of stock
Siemens 5SM23 RCCB, 40A, 3 Pole, 30mA, Type A, 400V
  • RS Stock No. 328-359
  • Mfr. Part No. 5SM2332-6KK01
Each
$536.20(exc. GST)
In Stock
Bourns 1.1A Resettable Fuse, 33V
  • RS Stock No. 245-9133P
  • Mfr. Part No. MF-LSMF110X-2
Each (Supplied on a Reel)
$1.026(exc. GST)
In Stock
Bourns 2.6A Resettable Fuse, 6V
  • RS Stock No. 245-9156P
  • Mfr. Part No. MF-LSMF260/6X-2
Each (Supplied on a Reel)
$1.245(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 271-9871
  • Mfr. Part No. 3VA1125-6GD46-0AA0
Each
$1,222.10(exc. GST)
Temporarily out of stock
Siemens 400A Tag Fuse, 161mm, 1kV, 129.7mm
  • RS Stock No. 608-827
  • Mfr. Part No. 3NE3432-0C
1 Pack of 3
$1,301.28(exc. GST)
Temporarily out of stock
Eaton 100A Tag Fuse, 30 x 135mm, 400V
  • RS Stock No. 248-569
  • Mfr. Part No. 100NHG01BI-400
1 Pack of 3
$62.47(exc. GST)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 100/160/250 Circuit Breakers
  • RS Stock No. 260-9338
  • Mfr. Part No. C1034V040
Each
$5,323.57(exc. GST)
Temporarily out of stock
Phoenix Contact CAPAROC Busbar Connector, 24V dc
  • RS Stock No. 269-7942
  • Mfr. Part No. 1115674
Each (In a Pack of 3)
$44.773(exc. GST)
In Stock
Mersen 32A FF Cartridge Fuse, 22 x 58mm
  • RS Stock No. 136-0578
  • Mfr. Part No. A1018624 / FR22GR69V32T
Each
$53.48(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 32A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9877
  • Mfr. Part No. 3VA1132-3ED22-0AA0
Each
$695.98(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 250A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 209-5207
  • Mfr. Part No. 3VA2325-6KP42-0AA0
Each
$7,181.43(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 16A, Breaking Capacity 36 kA, Panel Mount
  • RS Stock No. 654-755
  • Mfr. Part No. IL0163P36
Each
$1,250.32(exc. GST)
Temporarily out of stock
Schneider Electric Acti9 Acti9 Reflex MCB, 3P, 10A Curve D, 230V AC, 48V DC, 30 kA Breaking Capacity
  • RS Stock No. 341-546
  • Mfr. Part No. A9C66310
Each
$2,799.21(exc. GST)
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