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
Fuses - PCB
Fuses - PCB

46578 Products showing for Fuses & Circuit Breakers

211 / 999+
Temporarily out of stock
Schneider Electric Resi9 Insulation accessory for use with Circuit Breaker
  • RS Stock No. 212-261
  • Mfr. Part No. R9XE310
Each
MYR71.88
In Stock
Eaton 32A Rail Mount Fuse Holder for F1 Fuse, 1P, 550V ac
  • RS Stock No. 182-1565
  • Mfr. Part No. 32NNSFBSWHITE
Each
MYR127.97
In Stock
Hager 3 Phase Busbar
  • RS Stock No. 144-4831
  • Mfr. Part No. KB363A
Each
MYR172.09
In Stock
Better World
Schneider Electric Multi 9 C60SP MCB, 1P, 13A Curve C, 415V AC, 60V DC, 20 kA Breaking Capacity
  • RS Stock No. 211-2358
  • Mfr. Part No. M9F22113
Each
MYR83.42
Temporarily out of stock
Eaton Phase Busbar 3 Phase Busbar, 277V
  • RS Stock No. 231-738
  • Mfr. Part No. 121991 BB-UL-25/3P-3M/57
Each
MYR495.95
In Stock
Okaya Electric Industries 1 Phase Surge Protector, 5kA, Surface Mount Mount
  • RS Stock No. 190-2015
  • Mfr. Part No. LV275DI-Q4
Each
MYR178.34
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 4 channels
  • RS Stock No. 259-4526
  • Mfr. Part No. 1SDA072764R1
Each
MYR21,619.14
Temporarily out of stock
Schneider Electric Trunking Unit, Canalis Series
  • RS Stock No. 244-989
  • Mfr. Part No. KSA400CM4AF
Each
MYR9,192.71
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 3P 100A, Fixed Mount
  • RS Stock No. 236-6660
  • Mfr. Part No. 1SDA068267R1 XT3S 250 TMG 100A FF
Each
MYR3,816.63
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 1.6A Curve D
  • RS Stock No. 237-3192
  • Mfr. Part No. 2CDS251001R0971
Each
MYR119.18
Temporarily out of stock
Better World
Schneider Electric Acti 9 C60H-DC MCB, 1P, 40A Curve C, 250V DC, 20 kA Breaking Capacity
  • RS Stock No. 776-3187
  • Mfr. Part No. A9N61517
Each
MYR594.26
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Touch LSIG, 3 channels
  • RS Stock No. 259-4160
  • Mfr. Part No. 1SDA072276R1
Each
MYR33,174.71
In Stock
Eaton 3A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8213P
  • Mfr. Part No. PV-3A10F
Each (Supplied in a Box)
MYR59.62
In Stock
Littelfuse PC Board Non Resettable Fuse, Radial 800mA, 250V ac
  • RS Stock No. 895-1662
  • Mfr. Part No. 37208000431
Each (In a Pack of 10)
MYR4.389
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 63A Curve B, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3243
  • Mfr. Part No. A9F53363
Each
MYR667.26
Temporarily out of stock
Eaton 50A Cartridge Fuses, 14 x 51mm
  • RS Stock No. 229-202
  • Mfr. Part No. C14M50S
1 Pack of 10
MYR444.17
In Stock
Siemens SENTRON 5SP4 MCB, 3P, 100A Curve D
  • RS Stock No. 216-4054
  • Mfr. Part No. 5SP4391-8
Each
MYR2,391.90
Temporarily out of stock
Better World
Schneider Electric Busbar
  • RS Stock No. 219-9029
  • Mfr. Part No. AK5JB143
Each
MYR1,322.26
Temporarily out of stock
Schneider Electric Canalis White Busbar Trunking, W46 mm x, L3m
  • RS Stock No. 276-9229
  • Mfr. Part No. KBB40ED44305TW
Each
MYR1,802.47
In Stock
Better World
Siemens Sentron 5SY6 MCB, 1P, 32A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 489-6675
  • Mfr. Part No. 5SY6132-6
Each
MYR102.45
1
211
2329
Results per page

Related links