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

232 / 999+
Schneider Electric, EasyPact Circuit breaker 4P 630A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 124-548
  • Mfr. Part No. EZC630N4500N
Each
MYR9,834.93
Better World
Schneider Electric RCBO, 6A Current Rating, 1P Poles, 30mA Trip Sensitivity, Acti9 Range
  • RS Stock No. 201-2243
  • Mfr. Part No. A9DE3606
Each
MYR1,760.66
Schneider Electric, ComPacT MCCB 4P 160A, Fixed Mount
  • RS Stock No. 260-8059
  • Mfr. Part No. C25W46E160
Each
MYR27,132.68
Eaton 45A Centred Tag Fuse, 600V
  • RS Stock No. 854-9008
  • Mfr. Part No. LPJ-45SP
Each
MYR426.65
Better World
Schneider Electric Acti 9 4 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2792
  • Mfr. Part No. A9XAH457
Each
MYR1,781.40
ABB Tmax XT Adapter for use with Circuit Breaker
  • RS Stock No. 232-0171
  • Mfr. Part No. 1SDA066311R1 ADP PF XT4 3P
Each
MYR131.47
Limitor Thermal Fuse +55°C 2.5 A, 250V ac
  • RS Stock No. 204-7382
  • Mfr. Part No. Q82 A 55 05 100
Each
MYR24.31
Legrand 32A M Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 266-3126
  • Mfr. Part No. 0 141 32
1 Box of 10
MYR632.84
WAGO Electronic Circuit Breaker 10A 24V 787, 8 channels , DIN Rail
  • RS Stock No. 279-4108
  • Mfr. Part No. 787-1668
Each
MYR2,383.85
Eaton 8A Slow-Blow Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-106
  • Mfr. Part No. C10M8 CYLINDRICAL FUSE 10 x 38 8A AM 500V AC
1 Pack of 10
MYR60.83
Hager NGT MCB, 1+N, 40A, 240 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4801
  • Mfr. Part No. NGT740
Each
MYR745.94
Better World
Siemens SENTRON 5SL6 MCB, 1P, 32A Curve B, 6 kA Breaking Capacity
  • RS Stock No. 202-7174
  • Mfr. Part No. 5SL6132-6
Each
MYR90.01
Schneider Electric MasterPacT Locking Kit for use with MasterPact NW
  • RS Stock No. 432-740
  • Mfr. Part No. 64930
Each
MYR2,783.47
RS PRO 1A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 177-8097
Each (In a Pack of 5)
MYR9.076
Europa RCBO, 32A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A, EUBLMC Range
  • RS Stock No. 210-4732
  • Mfr. Part No. EUBLMC32B30A
Each
MYR308.62
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 800A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 250-052
  • Mfr. Part No. 3VA6580-6KT32-2AA0
Each
MYR41,064.41
Spelsberg Consumer Unit Ake 03
  • RS Stock No. 475-1358
  • Mfr. Part No. 73551201
Each
MYR291.91
Siemens SENTRON 5SL3 Circuit Breaker, 1+N, 10A Curve C, 230V AC, 60V DC, 4.5 KA Breaking Capacity
  • RS Stock No. 220-097
  • Mfr. Part No. 5SL3010-7KL
Each
MYR240.19
Better World
Schneider Electric Multi 9 C60N MCB, 3P, 50A Curve C, 10 kA Breaking Capacity
  • RS Stock No. 214-2074
  • Mfr. Part No. M9F11350
Each
MYR978.82
Better World
Schneider Electric Acti 9 iC60H MCB, 16A Curve B, 230V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-2225
  • Mfr. Part No. A9F06616
Each
MYR270.57
1
232
2329
Results per page

Related links