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

1753 of 999+
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-530
  • Mfr. Part No. 3VA6140-8JP31-2AA0
Each
$4,664.31(exc. GST)
Temporarily out of stock
Eaton NZM Electronic Circuit Breaker 320A NZM, 4 channels , Fixed
  • RS Stock No. 120-638
  • Mfr. Part No. 168890 NZMH3-4-A320/200-SVE
Each
$8,103.27(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 2P 80A, Breaking Capacity 85 KA, Fixed Mount
  • RS Stock No. 119-217
  • Mfr. Part No. C10M2TM080
Each
$1,217.81(exc. GST)
In Stock
Littelfuse 6.3A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 542-1250
  • Mfr. Part No. 021806.3MXP
Each (In a Pack of 10)
$1.682(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 2.5A, 125V
  • RS Stock No. 738-2924P
  • Mfr. Part No. 045102.5MRL
Each (Supplied on a Reel)
$1.767(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 2P 63A, Breaking Capacity 18 KA, Fixed Mount
  • RS Stock No. 119-219
  • Mfr. Part No. C10F2TM063
Each
$1,473.46(exc. GST)
Temporarily out of stock
ABB SMISSLINE Busbar for Smissline TP
  • RS Stock No. 246-2305
  • Mfr. Part No. 2CCF800219R0001
Each
$6.40(exc. GST)
Unavailable
ABB System Pro M Compact S200 MCB, 3P, 8A Curve K, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-8024
  • Mfr. Part No. 2CDS253001R0407 S203-K8
Each
$221.61(exc. GST)
Last RS stock
Schurter PC Board Non Resettable Fuse, Axial 7A, 125V ac/dc
  • RS Stock No. 110-8559
  • Mfr. Part No. 7010.7140.13
Each (In a Pack of 5)
$3.918(exc. GST)
In Stock
Schneider Electric Acti9 iID RCCB, 80A, 2 Pole, 300mA, Type AC, 220 → 240V ac
  • RS Stock No. 130-795
  • Mfr. Part No. A9R14280
Each
$1,223.79(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA 1SDA07, 4 channels
  • RS Stock No. 259-3842
  • Mfr. Part No. 1SDA071854R1
Each
$68,318.04(exc. GST)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 1kA, Breaking Capacity 35 kA, Cable Mount
  • RS Stock No. 249-131
  • Mfr. Part No. 3VA6610-6HL46-0AA0
Each
$22,334.79(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Dip LSI, 4 channels
  • RS Stock No. 259-3506
  • Mfr. Part No. 1SDA071472R1
Each
$14,884.29(exc. GST)
Currently unavailable
Sato Parts F-700 Series Fuse Cover for 6.3 x 32 mm, 6.35 x 30 x 6.35 x 31.8 mm Fuse
  • RS Stock No. 229-4971
  • Mfr. Part No. F-700-FCL
Each
$10.80(exc. GST)
Temporarily out of stock
Schneider Electric, TCE Circuit Breaker Accessory 400 → 600A
  • RS Stock No. 119-382
  • Mfr. Part No. LV833576SP
Each
$2,204.02(exc. GST)
Temporarily out of stock
Socomec 500 Centred Tag Fuse, S2
  • RS Stock No. 223-2865
  • Mfr. Part No. 68720500
Each (In a Pack of 3)
$73.60(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 3 channels
  • RS Stock No. 259-4127
  • Mfr. Part No. 1SDA072237R1
Each
$20,585.52(exc. GST)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9556
  • Mfr. Part No. 3VA10103ED460AA0
Each
$1,263.69(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 1P 40A, Breaking Capacity 25 KA, Fixed Mount
  • RS Stock No. 119-475
  • Mfr. Part No. C10N1TM040
Each
$1,154.98(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A Ekip G Hi-Touch LSIG, 4 channels
  • RS Stock No. 259-4630
  • Mfr. Part No. 1SDA072900R1
Each
$25,907.33(exc. GST)
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