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

46579 Products showing for Fuses & Circuit Breakers

105 / 999+
In Stock
Eaton xEffect MCB, 2P, 10A Curve D, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3487
  • Mfr. Part No. 102187 FAZ-D10/2-NA
Each
MYR797.45
In Stock
Eaton 6.3A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1391
Each (In a Pack of 10)
MYR1.254
Temporarily out of stock
Better World
Schneider Electric Acti 9 C120H MCB, 4P, 80A Curve C, 440V AC, 500V DC, 15 kA, 30 kA Breaking Capacity
  • RS Stock No. 776-3039
  • Mfr. Part No. A9N18479
Each
MYR2,854.45
In Stock
ABB System Pro M Compact S200 MCB, 3P, 100A Curve C, 440V AC, 6 kA Breaking Capacity
  • RS Stock No. 231-9682
  • Mfr. Part No. 2CDS253001R0824 S203-C100 6kA 100A
1 Box of 1
MYR1,077.87
In Stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 2P, 4A Curve C, 277V AC
  • RS Stock No. 256-6796
  • Mfr. Part No. M9F52204
Each
MYR1,192.16
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 500A, Fixed Mount
  • RS Stock No. 260-8208
  • Mfr. Part No. C63F4TM500D1
Each
MYR24,047.20
In Stock
Littelfuse 150A Orange BF2 Car Fuse, 32V dc
  • RS Stock No. 431-6804
  • Mfr. Part No. 153.5395.6151
Each (In a Pack of 5)
MYR37.72
In Stock
WJ Furse Copper Alloy Earth Clamp Nominal Rod dia. 16mm
  • RS Stock No. 153-2963
  • Mfr. Part No. 7TCA083220R0010 CR515
Each (In a Pack of 10)
MYR49.21
In Stock
Schurter Non-Resettable Fuse Kit
  • RS Stock No. 122-3333
  • Mfr. Part No. 0034.9857
Each
MYR735.36
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 4A Curve C, 253V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 746-7652
  • Mfr. Part No. 2CDS251001R0044 S201-C4
Each
MYR112.90
Currently unavailable
Schurter 6.3A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 865-7770
  • Mfr. Part No. 0034.3885
Each (In a Pack of 10)
MYR8.093
In Stock
Littelfuse SMD Fuse Block 5A, 125V ac/dc
  • RS Stock No. 769-3716
  • Mfr. Part No. 0154005.DR
Each (In a Pack of 10)
MYR11.002
In Stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 160A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 232-0237
  • Mfr. Part No. 1SDA067058R1 XT2N 160 Ekip LS/I 160A FF
Each
MYR3,201.95
In Stock
ETA Thermal Circuit Breaker - 1140-F Single Pole 250V Voltage Rating Snap In, 16A Current Rating
  • RS Stock No. 728-8686
  • Mfr. Part No. 1140-F111-P1M1-16A
Each
MYR78.39
In Stock
RS PRO Cartridge Fuse Fuse Kit
  • RS Stock No. 918-2697
Each
MYR258.02
In Stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 200A, Fixed Mount
  • RS Stock No. 254-6355
  • Mfr. Part No. C25F3TM200
Each
MYR9,467.07
In Stock
Siemens 100A Rail Mount Fuse Holder for 22 x 58mm Fuse, 3P, 690V
  • RS Stock No. 225-5427
  • Mfr. Part No. 3NW7231
Each
MYR468.41
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 4P 30A, Breaking Capacity 35 kA, DIN Rail Mount
  • RS Stock No. 357-942
  • Mfr. Part No. BGL46030LU
Each
MYR6,973.34
In Stock
Schneider Electric, ComPacT NSX MCCB 3P 100A, Fixed Mount
  • RS Stock No. 254-6269
  • Mfr. Part No. C1032D100
Each
MYR2,190.45
In Stock
ETA Thermal Circuit Breaker - 1658 Single Pole 250V Voltage Rating Panel Mount, 5A Current Rating
  • RS Stock No. 273-0854
  • Mfr. Part No. 1658-G21-02-P10-5A
Each
MYR31.41
1
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