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

34933 Products showing for Fuses & Circuit Breakers

2 of 999+
SIBA 30A DII Diazed Fuse, E27 Thread Size, gR, 500V ac
  • RS Stock No. 421-514
  • Mfr. Part No. 10-005-07/30A
Each (In a Pack of 5)
$14.952(exc. GST)
Miniature circuit breaker, 63 A, 1p
  • RS Stock No. 611-276
  • Mfr. Part No. PLSM-D63-MW
Each
$75.12(exc. GST)
Schneider Electric Acti 9 iC60N MCB, 2P, 10A Curve C
  • RS Stock No. 230-6657
  • Mfr. Part No. A9F44210
Each
$75.91(exc. GST)
Schneider Electric, ComPacT MCCB 3P 400A, Fixed Mount
  • RS Stock No. 260-8121
  • Mfr. Part No. C40N3
Each
$4,041.86(exc. GST)
Better World
Schneider Electric Acti 9 1 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 806-7228
  • Mfr. Part No. A9XPH112
Each
$23.62(exc. GST)
Limitor Thermal Fuse +229°C 15 A, 250V ac
  • RS Stock No. 797-6030
  • Mfr. Part No. SF 229 R
Each (In a Pack of 10)
$1.542(exc. GST)
Schneider Electric, ComPacT NSX MCCB 3P 100A, Fixed Mount
  • RS Stock No. 254-6272
  • Mfr. Part No. C103MA100
Each
$313.71(exc. GST)
Better World
Schneider Electric Acti 9 iC60N MCB, 1P, 25A Curve C, 100 → 133V AC, 12 → 48V DC, 6 kA Breaking Capacity
  • RS Stock No. 790-8869
  • Mfr. Part No. A9F44125
Each
$15.98(exc. GST)
ETA Circuit Breaker Splash Cover
  • RS Stock No. 574-835
  • Mfr. Part No. X200.799.01 (N.1.480.08) CLEAR SPLASH COVER
Each
$19.09(exc. GST)
Schneider Electric Acti 9 iC60N MCB, 1P, 2A Curve C
  • RS Stock No. 230-6651
  • Mfr. Part No. A9F44102
Each
$20.07(exc. GST)
Schneider Electric RCBO, 16A Current Rating, 1P Poles, 30mA Trip Sensitivity, Acti 9 Range
  • RS Stock No. 230-6642
  • Mfr. Part No. A9D32616
Each
$80.76(exc. GST)
Schneider Electric RCBO, 40A Current Rating, 1P Poles, 30mA Trip Sensitivity, Acti 9 Range
  • RS Stock No. 230-6650
  • Mfr. Part No. A9D61840
Each
$85.23(exc. GST)
Littelfuse 25A White Blade Car Fuse, 32V dc
  • RS Stock No. 787-4154
  • Mfr. Part No. 0287025.PXCN
Each (In a Pack of 10)
$0.652(exc. GST)
Schneider Electric, ComPacT NSX MCCB 3P 250A, Fixed Mount
  • RS Stock No. 254-6352
  • Mfr. Part No. C25F3
Each
$1,589.12(exc. GST)
RS PRO 10 A Panel Mount Fuse Holder, 1P for 5 x 20 mm, 250 V
  • RS Stock No. 277-3917
Each (In a Pack of 5)
$7.496(exc. GST)
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 2A Curve D, 400V AC, 12 → 144V DC, 6 kA Breaking Capacity
  • RS Stock No. 734-9646
  • Mfr. Part No. A9F75202
Each
$396.57(exc. GST)
RS PRO 10 A Panel Mount Fuse Holder, 1P for 5 x 20 mm, 250 V
  • RS Stock No. 277-3909
Each (In a Pack of 5)
$4.76(exc. GST)
Schneider Electric Acti 9 Safety Transformer for use with Acti9
  • RS Stock No. 247-1921
  • Mfr. Part No. A9A15222
Each
$283.39(exc. GST)
Better World
Schneider Electric Acti 9 C60H-DC MCB, 2P, 20A Curve C, 500V DC, 20 kA Breaking Capacity
  • RS Stock No. 776-3212
  • Mfr. Part No. A9N61532
Each
$178.74(exc. GST)
Better World
Schneider Electric Acti 9 C60H-DC MCB, 2P, 6A Curve C, 500V DC
  • RS Stock No. 772-1515
  • Mfr. Part No. A9N61526
Each
$178.74(exc. GST)
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