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

30 / 999+
In Stock
Selco Thermal Fuse +216°C 10 A, 250V ac
  • RS Stock No. 111-7811
  • Mfr. Part No. SWTC-421-3535
Each (In a Pack of 10)
MYR10.227
In Stock
Eaton 32A gG/gL Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-178
  • Mfr. Part No. C10G32 CYLINDRICAL FUSE 10 x 38 32A GG 400V AC
1 Pack of 10
MYR47.67
In Stock
Littelfuse 440mA F Ceramic Cartridge Fuse, 10 x 35mm
  • RS Stock No. 738-3194
  • Mfr. Part No. 0FLU.440T
Each
MYR236.62
Temporarily out of stock
Better World
Schneider Electric Linergy Busbar Connector, 690V
  • RS Stock No. 211-2320
  • Mfr. Part No. LA9ZX01285
Each (In a Pack of 50)
MYR24.01
In Stock
Eaton 5A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 851-1680
  • Mfr. Part No. FNQ-R-5
Each
MYR313.18
In Stock
Better World
Schneider Electric 4A Cartridge Fuse, 10 x 38mm
  • RS Stock No. 219-9052
  • Mfr. Part No. DF2CN04
Each (In a Pack of 10)
MYR42.778
In Stock
ABB RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6949
  • Mfr. Part No. 2CSR275080R1164 DS201 M C16 AC30
Each
MYR922.90
In Stock
ABB FH200 RCCB, 25A, 4 Pole, 30mA, Type AC
  • RS Stock No. 540-1644
  • Mfr. Part No. 2CSF204006R1250 FH204 AC-25/0,03
Each
MYR401.35
In Stock
Siemens 6A DII Diazed Fuse, E27 Thread Size, gG, 500V ac
  • RS Stock No. 396-174
  • Mfr. Part No. 5SB231
Each (In a Pack of 5)
MYR8.724
Temporarily out of stock
Eaton xComfort KLV Distribution Board Enclosure
  • RS Stock No. 124-790
  • Mfr. Part No. 178816 KLV-24UPS-F
Each
MYR713.74
In Stock
Schurter 10A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 1P, 250V ac
  • RS Stock No. 412-863
  • Mfr. Part No. 0031.1804
Each (In a Pack of 5)
MYR28.462
Limited stock
Eaton 400A NH Fuse, NH2, 500V
  • RS Stock No. 703-8759
  • Mfr. Part No. 400NHG2B
Each
MYR147.68
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 3P, 6A Curve C, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 202-935
  • Mfr. Part No. 2CDS273061R0064
Each
MYR2,516.28
In Stock
Siemens ALPHA Busbar
  • RS Stock No. 236-8449
  • Mfr. Part No. 8GK9731-0KK50
Each
MYR171.42
In Stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 1P, 8A Curve C, 277V AC
  • RS Stock No. 256-6779
  • Mfr. Part No. M9F42108
Each
MYR494.41
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 3A Curve D, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-7841
  • Mfr. Part No. 2CDS252001R0031 S202-D3
Each
MYR353.93
In Stock
Eaton 20A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 703-8434
  • Mfr. Part No. C14G20
Each (In a Pack of 10)
MYR5.91
In Stock
Eaton 10A F Ceramic Cartridge Fuse, 6.3 x 25mm
  • RS Stock No. 412-598
  • Mfr. Part No. TDC180-10A
Each (In a Pack of 10)
MYR4.423
In Stock
Eaton 16A gG/gL Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-265
  • Mfr. Part No. C10G16 CYLINDRICAL FUSE 10 x 38 16A GG 500V AC
1 Pack of 10
MYR47.67
New product - Preorder today
Schneider Electric EZ9R RCCB, 63A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 654-804
  • Mfr. Part No. EZ9R46263
Each
MYR325.83
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