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

110 / 999+
Eaton 100A Centred Tag Fuse, NH0, 500V ac
  • RS Stock No. 703-8677
  • Mfr. Part No. 100NHG0B
Each
MYR52.00
ABB, XT2N MCCB 4P 100A, Fixed Mount
  • RS Stock No. 237-6222
  • Mfr. Part No. 1SDA067039R1 XT2N 160 TMA 100A FF
Each
MYR2,630.96
Better World
Schneider Electric RCBO, 32A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3338
  • Mfr. Part No. A9DV3632
Each
MYR1,555.90
SIBA 63A Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 893-8524
  • Mfr. Part No. 50-140-06/63A
Each
MYR86.20
Mersen 100A FF Cartridge Fuse, 22 x 58mm
  • RS Stock No. 136-0622
  • Mfr. Part No. F1018560 / FR22GR69V100
Each
MYR162.90
Schneider Electric, ComPacT New Generation MCCB 3P 160A, Fixed Mount
  • RS Stock No. 260-7735
  • Mfr. Part No. C16B32D160
Each
MYR6,087.89
Mersen 6A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 188-6978
  • Mfr. Part No. K215128
Each (In a Pack of 10)
MYR12.40
Better World
Schneider Electric Multi 9 C60N MCB, 3P, 32A Curve C, 10 kA Breaking Capacity
  • RS Stock No. 214-2073
  • Mfr. Part No. M9F11332
Each
MYR1,309.33
Eaton 2A Bolted Tag Fuse, 240V ac, 35mm
  • RS Stock No. 181-8576
  • Mfr. Part No. STD2
1 Box of 20
MYR321.60
Better World
ABB System Pro M Compact S200 MCB, 2P, 63A Curve B, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7582
  • Mfr. Part No. 2CDS252001R0635 S202-B63
Each
MYR307.34
Phoenix Contact 2 Phase Surge Protector, 2kV, DIN Rail Mount
  • RS Stock No. 890-3730
  • Mfr. Part No. 2905337
Each
MYR1,241.07
Schneider Electric, ComPacT MCCB 3P 630A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 260-8223
  • Mfr. Part No. C63N32D630
Each
MYR27,857.64
Siemens 6A Cartridge Fuse
  • RS Stock No. 210-7006
  • Mfr. Part No. 3NW8001-1
Each (In a Pack of 10)
MYR30.139
RS PRO 15A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6095
Each (In a Pack of 10)
MYR3.836
Better World
Siemens 3VA93 RCD, 400A, 4 Pole, Type A
  • RS Stock No. 210-9375
  • Mfr. Part No. 3VA9324-0RL30
Each
MYR9,288.07
ABB Earth & Neutral Terminal Bar for use with MCB
  • RS Stock No. 232-0024
  • Mfr. Part No. GJI2320072R0017 SZ-KLB 16
1 Box of 1
MYR64.53
RS PRO PC Board Non Resettable Fuse, Radial 8A, 250V ac
  • RS Stock No. 767-5077
Each (In a Pack of 10)
MYR3.381
Legrand 6A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 180-6116
  • Mfr. Part No. 0 133 06
Each (In a Box of 10)
MYR13.249
ABB RCBO, 32A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, System Pro M Compact Range
  • RS Stock No. 201-6955
  • Mfr. Part No. 2CSR255080R1324 DS201 C32 AC30
Each
MYR590.84
ABB System Pro M Compact S200 MCB, 1P, 13A Curve B, 253V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 488-6993
  • Mfr. Part No. 2CDS251001R0135 - S201B13
Each
MYR99.30
1
110
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