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

1755 of 999+
Temporarily out of stock
Siemens, SENTRON MCCB 3P 630A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 270-4830
  • Mfr. Part No. 3VA2563-7KQ32-0AA0
Each
$11,336.90(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 630A 1SDA07, 4 channels
  • RS Stock No. 259-4496
  • Mfr. Part No. 1SDA072708R1
Each
$19,743.74(exc. GST)
Temporarily out of stock
FUSE 5X20MM H PACK (P)
  • RS Stock No. 552-971
  • Mfr. Part No. 021806.3HXP
1 Pack of 100
$56.83(exc. GST)
In Stock
Schneider Electric, ComPacT NSX Circuit breaker 1P 100A, Breaking Capacity 25 KA, Fixed Mount
  • RS Stock No. 119-600
  • Mfr. Part No. C10N1TM100
Each
$1,229.01(exc. GST)
In Stock
Littelfuse SMD Non Resettable Fuse 250mA, 125V ac/dc
  • RS Stock No. 219-6068P
  • Mfr. Part No. 0154.250DR
Each (Supplied on a Reel)
$3.705(exc. GST)
Temporarily out of stock
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 1kA, Breaking Capacity 25 kA, Cable Mount
  • RS Stock No. 249-166
  • Mfr. Part No. 3VA6610-5KT46-0AA0
Each
$23,994.21(exc. GST)
In Stock
Schneider Electric RCBO, 10A Current Rating, 4P Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 130-731
  • Mfr. Part No. A9D57410
Each
$2,164.29(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA 1SDA07, 4 channels
  • RS Stock No. 259-3501
  • Mfr. Part No. 1SDA071468R1
Each
$20,394.20(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 4 channels
  • RS Stock No. 259-4637
  • Mfr. Part No. 1SDA072910R1
Each
$23,788.66(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 4kA Ekip Touch LSIG, 3 channels
  • RS Stock No. 259-4416
  • Mfr. Part No. 1SDA072596R1
Each
$63,104.36(exc. GST)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 600A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 249-875
  • Mfr. Part No. 3VA6560-5HN36-2AA0
Each
$9,283.76(exc. GST)
In Stock
Sensata Airpax Airpax Thermal Circuit Breaker - LELK1 Single Pole Panel Mount, 15A Current Rating
  • RS Stock No. 275-0393
  • Mfr. Part No. LELK1-1-62F-15.0-A-91-V
1 Box of 5
$808.38(exc. GST)
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 3 channels
  • RS Stock No. 259-9903
  • Mfr. Part No. 1SDA070749R1
Each
$16,797.44(exc. GST)
Temporarily out of stock
Schneider Electric, ComPacT Circuit breaker 4P 100A, Breaking Capacity 16 KA, Fixed Mount
  • RS Stock No. 119-469
  • Mfr. Part No. C11E44V100L
Each
$4,957.08(exc. GST)
Temporarily out of stock
Schneider Electric A9Z RCCB, 63A, 4 Pole, 300mA, Type A-SI, 380-415V ac
  • RS Stock No. 212-354
  • Mfr. Part No. A9Z35463
Each
$757.43(exc. GST)
Unavailable
Littelfuse Non-Resettable Surface Mount Fuse 10A, 125V
  • RS Stock No. 895-1745P
  • Mfr. Part No. 0476010.MR
Each (Supplied on a Reel)
$1.788(exc. GST)
Temporarily out of stock
Eaton NZM Circuit Breaker for use with Circuit Breaker
  • RS Stock No. 246-902
  • Mfr. Part No. 192319 NZMH3-4-PX250/VAR-TAZ-AVE
Each
$13,565.88(exc. GST)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 800A IZMX/INX, 4 channels
  • RS Stock No. 127-775
  • Mfr. Part No. 183560 IZMX16B4-V08W-1
Each
$13,787.93(exc. GST)
In Stock
Littelfuse PC Board Non Resettable Fuse, Radial 250mA, 125V ac/dc
  • RS Stock No. 738-3080P
  • Mfr. Part No. 0259.250T
Each (Supplied as a Tape)
$12.50(exc. GST)
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 4 channels
  • RS Stock No. 259-4605
  • Mfr. Part No. 1SDA072871R1
Each
$13,678.46(exc. GST)
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