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

46578 Products showing for Fuses & Circuit Breakers

2261 / 999+
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 3 channels
  • RS Stock No. 259-4138
  • Mfr. Part No. 1SDA072251R1
Each
MYR30,479.81
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 70 kA
  • RS Stock No. 209-6792
  • Mfr. Part No. 3VA1125-6EF46-0AA0
Each
MYR2,619.15
Siemens, SENTRON MCCB 4P 110A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-242
  • Mfr. Part No. 3VA5211-6ED41-0AA0
Each
MYR8,820.93
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 4 channels
  • RS Stock No. 259-3584
  • Mfr. Part No. 1SDA071561R1
Each
MYR38,657.38
RS PRO 2A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 199-237
1 Pack of 10
MYR1,356.26
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 3 channels
  • RS Stock No. 259-4148
  • Mfr. Part No. 1SDA072260R1
Each
MYR53,990.18
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 4 channels
  • RS Stock No. 259-3589
  • Mfr. Part No. 1SDA071566R1
Each
MYR44,140.04
Siemens, SENTRON MCCB 4P 1kA, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 270-4789
  • Mfr. Part No. 3VA2510-7HK42-0AA0
Each
MYR46,934.50
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 3 channels
  • RS Stock No. 259-4038
  • Mfr. Part No. 1SDA072109R1
Each
MYR36,828.94
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Hi-Touch LSI, 4 channels
  • RS Stock No. 259-3491
  • Mfr. Part No. 1SDA071458R1
Each
MYR49,264.54
Better World
ABB Emax2 Electronic Circuit Breaker 3.2kA 1SDA07, 3 channels
  • RS Stock No. 259-3264
  • Mfr. Part No. 1SDA071163R1
Each
MYR80,845.83
Bourns SMD Non Resettable Fuse 20A, 125V ac
  • RS Stock No. 191-4188
  • Mfr. Part No. SF-2410F2000T-2
Each (On a Reel of 1000)
MYR4.594
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4115
  • Mfr. Part No. 3VA2116-7KQ36-0AA0
Each
MYR13,036.19
Legrand 1.25A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 266-3065
  • Mfr. Part No. 0 102 12
1 Box of 10
MYR92.68
ABB Emax2 Electronic Circuit Breaker 2kA 1SDA07, 4 channels
  • RS Stock No. 259-4756
  • Mfr. Part No. 1SDA073036R1
Each
MYR68,393.79
ABB Emax2 Electronic Circuit Breaker 1kA 1SDA07, 4 channels
  • RS Stock No. 259-3463
  • Mfr. Part No. 1SDA071418R1
Each
MYR47,351.54
Phoenix Contact TRABTECH Thermal Circuit Breaker - CB TM1 2A F1 P Single Pole, 2A Current Rating
  • RS Stock No. 768-0921
  • Mfr. Part No. 2800859
Each
MYR203.98
Better World
ABB Emax2 Electronic Circuit Breaker 800A Ekip G Hi-Touch LSIG, 3 channels
  • RS Stock No. 259-9922
  • Mfr. Part No. 1SDA070770R1
Each
MYR51,273.53
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 40A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9311
  • Mfr. Part No. 3VA1140-3ED22-0AA0
Each
MYR1,427.07
ABB Emax2 Electronic Circuit Breaker 3.2kA 1SDA07, 4 channels
  • RS Stock No. 259-3787
  • Mfr. Part No. 1SDA071792R1
Each
MYR99,338.12
1
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