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

1750 of 999+
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Touch LI, 4 channels
  • RS Stock No. 259-4633
  • Mfr. Part No. 1SDA072904R1
Each
$13,975.86(exc. GST)
RS PRO SMD Non Resettable Fuse 200mA, 125V
  • RS Stock No. 182-4124P
Each (Supplied in a Box)
$1.11(exc. GST)
ABB Emax2 Electronic Circuit Breaker 630A 1SDA07, 4 channels
  • RS Stock No. 259-3418
  • Mfr. Part No. 1SDA071352R1
Each
$13,315.51(exc. GST)
Schneider Electric, ComPacT NSX Circuit breaker 1P 20A, Breaking Capacity 40 KA, Fixed Mount
  • RS Stock No. 119-649
  • Mfr. Part No. C10M1TM020
Each
$1,504.34(exc. GST)
Schneider Electric, ComPacT NSX Circuit Breaker Accessory 2P 250A, Fixed Mount
  • RS Stock No. 119-396
  • Mfr. Part No. C252250S
Each
$2,755.32(exc. GST)
Schneider Electric Acti9 Acti9 iC60 MCB, 1P, 3A Curve K, 230V AC, 72V DC, 100 kA Breaking Capacity
  • RS Stock No. 212-249
  • Mfr. Part No. A9F95103
Each
$263.36(exc. GST)
Schneider Electric Resi9 R9F2 MCB, 3P, 50A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 212-207
  • Mfr. Part No. R9F24350
Each
$555.26(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3686
  • Mfr. Part No. 3VA2025-7KP36-0AA0
Each
$4,199.70(exc. GST)
ABB Emax2 Electronic Circuit Breaker 2kA Ekip G Touch LSIG, 4 channels
  • RS Stock No. 259-3684
  • Mfr. Part No. 1SDA071657R1
Each
$26,985.26(exc. GST)
Littelfuse 0.55A Resettable Fuse, 240V dc
  • RS Stock No. 495-0779P
  • Mfr. Part No. LVR055K
Each (Supplied in a Bag)
$1.562(exc. GST)
Wieland Busbar
  • RS Stock No. 360-0467
  • Mfr. Part No. Z8.000.0200.8
Each (In a Pack of 10)
$4.601(exc. GST)
Better World
Siemens SENTRON Electronic Circuit Breaker 63A 3VA2, 4 channels
  • RS Stock No. 157-214
  • Mfr. Part No. 3VA2163-8HL46-0AA0
Each
$3,010.92(exc. GST)
Littelfuse 1.1A Resettable Fuse, 30V
  • RS Stock No. 517-7054P
  • Mfr. Part No. SMD100F-2
Each (Supplied on a Reel)
$0.637(exc. GST)
Better World
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 3 channels
  • RS Stock No. 259-9931
  • Mfr. Part No. 1SDA070793R1
Each
$11,364.16(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-4015
  • Mfr. Part No. 3VA2110-8HK36-0AA0
Each
$2,574.37(exc. GST)
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-4075
  • Mfr. Part No. 1SDA072158R1
Each
$18,213.21(exc. GST)
Schneider Electric Multi9 M9F1 MCB, 4P, 10A Curve C, 440V AC, 250V DC, 6 kA Breaking Capacity
  • RS Stock No. 212-126
  • Mfr. Part No. M9F11410
Each
$491.60(exc. GST)
Eaton IZMX/INX Electronic Circuit Breaker 1.25kA , Fixed
  • RS Stock No. 127-700
  • Mfr. Part No. 183334 IZMX16N3-V12F-1
Each
$12,988.45(exc. GST)
Lovato 2 Phase Surge Protector, 50kA
  • RS Stock No. 216-8299
  • Mfr. Part No. SG22PA300
Each
$373.52(exc. GST)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 600A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 250-035
  • Mfr. Part No. 3VA6560-7JT36-2AA0
Each
$15,428.07(exc. GST)
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