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

34912 Products showing for Fuses & Circuit Breakers

1 of 999+
Eaton 440mA F Melamine Cartridge Fuse, 10 x 35mm
  • RS Stock No. 459-7918
  • Mfr. Part No. DMM-B-44-100-R
Each (In a Pack of 5)
$123.082(exc. VAT)
Acti9 iID RCCB, 25A, 2 Pole, 10mA, Type A-SI, 220 → 240V ac
  • RS Stock No. 585-481
  • Mfr. Part No. A9R30225
Each
$1,266.87(exc. VAT)
Schneider Electric Acti 9 iC60N MCB, 3P, 20A Curve C
  • RS Stock No. 230-6666
  • Mfr. Part No. A9F44320
Each
$71.82(exc. VAT)
Schneider Electric Acti 9 iC60N MCB, 1P, 4A Curve C
  • RS Stock No. 230-6652
  • Mfr. Part No. A9F44104
Each
$20.07(exc. VAT)
Better World
Schneider Electric Acti 9 iC60N MCB, 1P, 40A Curve C, 100 → 133V AC, 12 → 48V DC, 6 kA Breaking Capacity
  • RS Stock No. 790-8872
  • Mfr. Part No. A9F44140
Each
$23.82(exc. VAT)
Siemens 50A Fuse Holder for 14 x 51mm Fuse, 1P + N, 690V
  • RS Stock No. 299-912
  • Mfr. Part No. 3NW7152
Each
$138.56(exc. VAT)
Eaton, xEnergy MCCB 3P 100A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 454-8073
  • Mfr. Part No. 259079 NZMB1-A100
Each
$501.02(exc. VAT)
Littelfuse 1A Black Blade Car Fuse, 32V dc
  • RS Stock No. 787-4110
  • Mfr. Part No. 0287001.PXCN
Each (In a Pack of 10)
$0.581(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 400A, Fixed Mount
  • RS Stock No. 260-8087
  • Mfr. Part No. C40F3
Each
$2,927.46(exc. VAT)
Schneider Electric RCBO, 20A Current Rating, 1P Poles, 30mA Trip Sensitivity, Acti 9 Range
  • RS Stock No. 230-6647
  • Mfr. Part No. A9D61820
Each
$85.23(exc. VAT)
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-138
  • Mfr. Part No. KV 8448 M
Each
$529.34(exc. VAT)
Better World
Schneider Electric, ComPacT NSX MCCB 3P 160A, Fixed Mount
  • RS Stock No. 254-6345
  • Mfr. Part No. C16F3TM160
Each
$1,751.86(exc. VAT)
Eaton 25A gG/gL Cartridge Fuse, 14 x 51mm
  • RS Stock No. 228-668
  • Mfr. Part No. C14G25
1 Pack of 10
$38.17(exc. VAT)
Eaton xComfort Distribution Board Enclosure, 12 Way
  • RS Stock No. 257-993
  • Mfr. Part No. 280354 BC-U-1/12-ECO
Each
$101.48(exc. VAT)
ABB, Tmax XT MCCB 3P 100A, Breaking Capacity 36 kA, Panel Mount
  • RS Stock No. 831-9172
  • Mfr. Part No. 1SDA067416R1 XT1N 160 TMD 100-1000 3p F F
Each
$493.89(exc. VAT)
RS PRO 30A Inline Fuse Holder for ATO/ATC 19x18.6mm Fuse, 32V dc
  • RS Stock No. 237-5265
Each
$14.73(exc. VAT)
Better World
Schneider Electric Acti 9 C120N MCB, 3P, 100A Curve C, 440V AC, 375V DC, 10 kA, 20 kA Breaking Capacity
  • RS Stock No. 776-3073
  • Mfr. Part No. A9N18367
Each
$362.45(exc. VAT)
Schneider Electric Acti9 Connection Unit for use with iC60 and iK60 Devices
  • RS Stock No. 655-154
  • Mfr. Part No. A9XPCD04
Each
$130.00(exc. VAT)
Schneider Electric ACTI9 IC60N MCB, 1P, 1A Curve C, 240V AC, 72V DC, 240 Breaking Capacity
  • RS Stock No. 435-913
  • Mfr. Part No. A9F44101
Each
$34.60(exc. VAT)
Schneider Electric Acti 9 iC60N MCB, 2P, 6A Curve C
  • RS Stock No. 230-6656
  • Mfr. Part No. A9F44206
Each
$78.19(exc. VAT)
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