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

46580 Products showing for Fuses & Circuit Breakers

60 / 999+
Better World
ABB, XT2S MCCB 4P 160A, Fixed Mount
  • RS Stock No. 236-7519
  • Mfr. Part No. 1SDA067838R1 XT2S 160 Ekip LS/I 160A 4P
Each
MYR5,115.85
50A Cartridge Fuse, 51 x 292mm
  • RS Stock No. 262-323
  • Mfr. Part No. 7.2TDLSJ50
1 Pack of 3
MYR3,526.88
Better World
Schneider Electric Multi 9 C60SP MCB, 1P, 20A Curve C, 415V AC, 65V DC, 20 kA Breaking Capacity
  • RS Stock No. 211-2359
  • Mfr. Part No. M9F22120
Each
MYR115.57
Eaton 63A Rail Mount Fuse Holder for A1 Fuse, 1P, 1.2 kV ac, 750V dc
  • RS Stock No. 182-1775
  • Mfr. Part No. RSL63H
Each
MYR726.44
Schurter 100mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 777-7467
  • Mfr. Part No. 0034.1506
Each (In a Pack of 10)
MYR4.247
Better World
Siemens RCBO, 10A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type B, Sentron Range
  • RS Stock No. 243-6140
  • Mfr. Part No. 5SU1324-6FP10
Each
MYR962.25
Eaton xEffect MCB, 2P, 40A Curve D, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3611
  • Mfr. Part No. 102196 FAZ-D40/2-NA
Each
MYR672.35
Better World
Schneider Electric, Compact MCCB 4P 63A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 178-8230
  • Mfr. Part No. LV426375
Each
MYR2,489.96
Eaton 80A Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 181-8558
  • Mfr. Part No. C22M80
Each (In a Box of 10)
MYR26.346
Eaton 6A T Cartridge Fuse, 21 x 57mm
  • RS Stock No. 773-3536
  • Mfr. Part No. LPJ-6SP
Each
MYR333.07
Hager NGT MCB, 3+N, 10A, 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4803
  • Mfr. Part No. NGT810
Each
MYR1,305.95
Better World
ABB System Pro M Compact S200 MCB, 1P, 2A Curve B, 20 kA Breaking Capacity
  • RS Stock No. 231-9658
  • Mfr. Part No. 2CDS251001R0025 S200-1P-B2A
1 Box of 1
MYR163.54
Eaton 25A British Standard Fuse, A1, 550V ac, 44.5mm
  • RS Stock No. 247-9206
  • Mfr. Part No. NITD25
Each (In a Pack of 5)
MYR29.64
Mersen NH Fuse Puller, Sizes 00 → 3
  • RS Stock No. 136-0623
  • Mfr. Part No. P215592 / NHHANDLE
Each
MYR276.85
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 400/630 Circuit Breakers
  • RS Stock No. 260-8067
  • Mfr. Part No. C4032D250
Each
MYR8,226.31
ABB SU200 M MCB, 4P, 35A, Type Z, 480V AC, 15 kA Breaking Capacity
  • RS Stock No. 200-870
  • Mfr. Part No. 2CDS274337R0548
Each
MYR3,446.73
Eaton xEffect FAZ MCB, 4P, 35A Curve B, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 240-886
  • Mfr. Part No. 190914 FAZ-B35/4-NA
Each
MYR1,314.50
Schneider Electric Resi9 R9F2 MCB, 1P, 13A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 212-139
  • Mfr. Part No. R9F23113
Each
MYR93.15
Better World
Schneider Electric Acti 9 C120N MCB, 3P, 100A Curve C, 440V AC, 375V DC, 10 kA, 20 kA Breaking Capacity
  • RS Stock No. 776-3073
  • Mfr. Part No. A9N18367
Each
MYR648.34
Schneider Electric RCBO, 20A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 130-872
  • Mfr. Part No. A9D07225
Each
MYR3,534.63
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