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

155 of 999+
Eaton 250A NH Fuse, NH02, 500V
  • RS Stock No. 703-8743
  • Mfr. Part No. 250NHG02B
Each
$28.62(exc. GST)
Schneider Electric Acti 9 1 Phase Busbar, 230V ac, 9mm Pitch
  • RS Stock No. 191-9522
  • Mfr. Part No. A9XPN612
Each
$43.14(exc. GST)
Siemens Surge Suppressor Unit, 250V dc, DIN Rail Mount
  • RS Stock No. 266-9453
  • Mfr. Part No. 3RT1956-1CD02
Each
$94.61(exc. GST)
TE Connectivity Thermal Magnetic Circuit Breakers - Potter & Brumfield W54 Single Pole 250V ac Voltage Rating Panel
  • RS Stock No. 240-8979
  • Mfr. Part No. 7-1393246-5
Each (In a Tray of 25)
$88.001(exc. GST)
ETA Thermal Circuit Breaker - 105 Single Pole 240V Voltage Rating Snap In, 3A Current Rating
  • RS Stock No. 728-8626
  • Mfr. Part No. 105-P10-3A
Each
$49.18(exc. GST)
Better World
Schneider Electric Acti 9 iC60L MCB, 4P, 10A Curve C
  • RS Stock No. 247-1951
  • Mfr. Part No. A9F94410
Each
$129.68(exc. GST)
ABB 315A Tag Fuse, NH1, 500V
  • RS Stock No. 251-3468
  • Mfr. Part No. 1SCA022627R4730
1 Box of 3
$189.26(exc. GST)
ABB RCBO, 16A Current Rating, 1P+N Poles, 300mA Trip Sensitivity, Type C
  • RS Stock No. 183-3706
  • Mfr. Part No. 2CSR245041R3164
Each
$215.38(exc. GST)
RS PRO 60A Ceramic Cartridge Fuse, 15 x 22mm
  • RS Stock No. 188-4615
Each
$42.71(exc. GST)
Socomec for use with Fuse Base
  • RS Stock No. 233-3340
  • Mfr. Part No. 65000001
Each (In a Pack of 2)
$4.76(exc. GST)
Siemens 3RV29 Phase Barrier for use with 3RV2
  • RS Stock No. 213-0447
  • Mfr. Part No. 3RV2928-1K
Each
$33.23(exc. GST)
Siemens SENTRON 5SP3 MCB, 3P, 35A, Type E, 25 kA Breaking Capacity
  • RS Stock No. 202-7112
  • Mfr. Part No. 5SP3835-2
Each
$609.71(exc. GST)
Schneider Electric Acti9 Acti9 iC60 MCB, 3P, 63A, 230V AC
  • RS Stock No. 357-455
  • Mfr. Part No. A9V81363
1 Pack of 15
$18,508.18(exc. GST)
WAGO 32A Fuse Holder for 10 x 38mm Fuse, 1P, 24V dc
  • RS Stock No. 279-1650
  • Mfr. Part No. 811-314
Each
$54.81(exc. GST)
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 210-1720
  • Mfr. Part No. 3VA2116-6HL32-0AA0
Each
$2,616.06(exc. GST)
Schneider Electric, ComPacT Circuit Breaker Accessory 1P
  • RS Stock No. 288-1501
  • Mfr. Part No. LV438320
Each
$90.07(exc. GST)
Eaton NZM Adapter for use with Circuit Breaker
  • RS Stock No. 256-885
  • Mfr. Part No. 281666 NZM2-XKR4
Each
$54.16(exc. GST)
Schneider Electric A9R RCCB, 63A, 2 Pole, 30mA, Type AC, 220 → 240V ac
  • RS Stock No. 654-561
  • Mfr. Part No. A9R41263
Each
$664.02(exc. GST)
ABB Plastic Consumer Unit, IP30 1SPE0077
  • RS Stock No. 289-1601
  • Mfr. Part No. 1SPE007717F2200
Each
$62.87(exc. GST)
Eaton 6A Cartridge Fuse, 1.5 x 0.41in
  • RS Stock No. 229-128
  • Mfr. Part No. FNQ-6
1 Pack of 10
$1,031.33(exc. GST)
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