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

155 / 999+
Better World
Schneider Electric Acti 9 C60H-DC MCB, 1P, 10A Curve C, 250V DC
  • RS Stock No. 772-1509
  • Mfr. Part No. A9N61508
Each
MYR162.80
Better World
Schneider Electric Linergy Combination Block
  • RS Stock No. 235-789
  • Mfr. Part No. GV2AF01
Each
MYR36.62
Better World
Schneider Electric RCBO, 16A Current Rating, 3P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3260
  • Mfr. Part No. A9DA3716
Each
MYR2,495.98
Eaton xEffect MCB, 2P, 32A Curve B, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3169
  • Mfr. Part No. 278737 FAZ-B32/2
Each
MYR309.14
ETA Thermal Circuit Breaker - 106-P30 Single Pole 250V Voltage Rating Panel Mount, 4A Current Rating
  • RS Stock No. 335-974
  • Mfr. Part No. 106-P30-000040-4A
Each
MYR108.02
Eaton 10A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1060
  • Mfr. Part No. S505-10-R
Each (In a Pack of 10)
MYR1.975
Schneider Electric Acti9 A9N MCB, 4P, 125A, 440V AC, 10000 A Breaking Capacity
  • RS Stock No. 276-8732
  • Mfr. Part No. A9N18377
Each
MYR5,065.63
Schneider Electric Acti 9 MCB, 3P, 32A Curve C, 230V AC, 7.5 kA Breaking Capacity
  • RS Stock No. 200-6159
  • Mfr. Part No. A9PA2732
Each
MYR1,231.04
Eaton 3.15A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 848-3829
  • Mfr. Part No. GDB-3-15A
Each
MYR25.95
Littelfuse 250mA T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 769-0118
  • Mfr. Part No. 0215.250TXP
Each (In a Pack of 10)
MYR5.939
RS PRO 3A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 177-8013
1 Box of 1000
MYR1,249.89
Schneider Electric, ComPacT NSX Circuit breaker 4P 80A, Fixed Mount
  • RS Stock No. 119-287
  • Mfr. Part No. C10N6TM080
Each
MYR6,898.47
ABB PBSC 3, 3+N Phase Busbar
  • RS Stock No. 201-493
  • Mfr. Part No. 1STQ007425A0000
Each
MYR17,136.36
Eaton 15A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 480V
  • RS Stock No. 225-8218
  • Mfr. Part No. BK-HVP-HH-R
Each (In a Pack of 5)
MYR46.956
Siemens 32A NH Fuse, NH000, 500V ac
  • RS Stock No. 397-351
  • Mfr. Part No. 3NA3812
Each (In a Pack of 3)
MYR51.717
Better World
Siemens RCBO, 8A Current Rating, 2P Poles, 30mA Trip Sensitivity, Sentron Range
  • RS Stock No. 151-1213
  • Mfr. Part No. 5SU1356-7KK08
Each
MYR708.72
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 32A Curve D, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3489
  • Mfr. Part No. A9F55132
Each
MYR209.08
Better World
Siemens Sentron 5SY4 MCB, 1+N, 20A Curve D, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 772-1451
  • Mfr. Part No. 5SY4520-8
Each
MYR420.16
SIBA 125A NH Fuse, NH00, 500V ac
  • RS Stock No. 421-738
  • Mfr. Part No. 20-001-13/125E1
Each (In a Pack of 3)
MYR48.383
Eaton 30A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 848-2902
  • Mfr. Part No. AGC-30-R
Each
MYR6.54
1
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