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

27 of 999+
Littelfuse 12A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 787-4299
  • Mfr. Part No. 0326012.MXP
Each (In a Pack of 5)
$3.384(exc. VAT)
Eaton 25A Bottle Fuse, 500V ac
  • RS Stock No. 228-721
  • Mfr. Part No. 25D27R FUSE-D2 25A F GR 500VAC E27
1 Pack of 5
$68.12(exc. VAT)
Eaton 100A Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 181-8735
  • Mfr. Part No. C22M100
Each
$12.78(exc. VAT)
Eaton 63A D02 Neozed Fuse, gG, 400V ac
  • RS Stock No. 181-8787
  • Mfr. Part No. 63NZ02
Each
$11.32(exc. VAT)
Legrand HX Busbar Connector
  • RS Stock No. 823-4680
  • Mfr. Part No. 4 049 05
Each
$21.38(exc. VAT)
RS PRO PC Board Non Resettable Fuse, Axial 3A, 250V ac
  • RS Stock No. 764-9598
Each (In a Pack of 10)
$0.97(exc. VAT)
RS PRO PC Board Non Resettable Fuse, Axial 3A, 250V ac
  • RS Stock No. 764-9558
Each (In a Pack of 10)
$1.213(exc. VAT)
Mersen 1A Slow-Blow Ceramic Cartridge Fuse, 8.5 x 31.5mm
  • RS Stock No. 247-2712
  • Mfr. Part No. C217168
1 Box of 10
$44.34(exc. VAT)
Legrand 4A F Ceramic Cartridge Fuse, 8.5 x 32mm
  • RS Stock No. 293-8171
  • Mfr. Part No. 0 123 04
Each (In a Pack of 10)
$3.684(exc. VAT)
Schurter 4A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 830-4234
  • Mfr. Part No. 8020.5017.G
Each (In a Pack of 10)
$2.052(exc. VAT)
nVent ERIFLEX ERIFLEX Busbar, 18mm Pitch
  • RS Stock No. 277-6089
  • Mfr. Part No. 549220
Each (In a Pack of 4)
$113.823(exc. VAT)
RS PRO 0.5A Resettable Fuse, 72V dc
  • RS Stock No. 279-6759
Each (In a Pack of 10)
$0.789(exc. VAT)
ABB 160A Tag Fuse, 79 x 30 x 60mm, 500V
  • RS Stock No. 251-3438
  • Mfr. Part No. 1SCA022627R1710
1 Box of 3
$62.71(exc. VAT)
Socomec 1, 3 Phase Surge Arrester, 20kA, 30V (Volts), DIN Rail Mount
  • RS Stock No. 252-3598
  • Mfr. Part No. 49863020
Each
$243.60(exc. VAT)
Rittal Earth Bar L. 450mm x W. 15mm x H. 5mm
  • RS Stock No. 826-2868
  • Mfr. Part No. 7113000
Each
$150.49(exc. VAT)
Eaton Switching Interlock for use with PLS Range MCB, ZP-A Circuit Breaker
  • RS Stock No. 922-7248
  • Mfr. Part No. 274418 Z-IS/SPE-1TE
Each
$40.63(exc. VAT)
Better World
ABB, Protecta MCCB 3P 250A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 831-9179
  • Mfr. Part No. 1SDA068058R1 XT3N 250 TMD 200-2000 3p F F
Each
$1,061.78(exc. VAT)
Schneider Electric RCBO, 20A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 339-510
  • Mfr. Part No. SEE120C03
Each
$340.00(exc. VAT)
Eaton 16A D01 Neozed Fuse, gG, 400V ac
  • RS Stock No. 181-8806
  • Mfr. Part No. 16NZ01
Each
$8.51(exc. VAT)
RS PRO 30A Green Blade Car Fuse, 32V dc
  • RS Stock No. 563-766
Each (In a Pack of 10)
$1.31(exc. VAT)
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