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

122 / 999+
In Stock
RS PRO 10A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 414-061
Each (In a Pack of 10)
MYR6.773
Temporarily out of stock
ABB 10A Tag Fuse, 79 x 21 x 53mm, 500V
  • RS Stock No. 250-4355
  • Mfr. Part No. 1SCA022652R0610
1 Box of 3
MYR162.53
In Stock
Eaton 50A British Standard Fuse, A3, 550V ac, 73.5mm
  • RS Stock No. 413-529
  • Mfr. Part No. BAO50
Each
MYR71.22
In Stock
Eaton, xEnergy MCCB 3P 63A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 454-8051
  • Mfr. Part No. 259077 NZMB1-A63
Each
MYR2,301.53
Temporarily out of stock
Siemens Busbar Tap-Off Unit, BD2 Series
  • RS Stock No. 213-2429
  • Mfr. Part No. BVP:203136
Each
MYR1,537.39
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 32A Curve K, 253V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 514-0169
  • Mfr. Part No. 2CDS251001R0537 S201-K32
Each
MYR162.58
In Stock
Better World
Schneider Electric RCBO, 20A Current Rating, 1P+N Poles, Type AB, Easy9 Range
  • RS Stock No. 850-8656
  • Mfr. Part No. EZ9D16820
Each
MYR170.77
In Stock
Eaton 2A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 848-3905
  • Mfr. Part No. KTK-R-2
Each
MYR308.44
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 3+N, 20A Curve K
  • RS Stock No. 237-3294
  • Mfr. Part No. 2CDS253103R0487
Each
MYR1,003.76
In Stock
Better World
Schneider Electric Multi 9 C60N MCB, 2P, 16A Curve C, 10 kA Breaking Capacity
  • RS Stock No. 214-2066
  • Mfr. Part No. M9F11216
Each
MYR398.04
In Stock
Schneider Electric Acti9 1 Phase Distribution Board, 6 Way, 125 A
  • RS Stock No. 244-967
  • Mfr. Part No. SE125A6
Each
MYR729.90
In Stock
Eaton 160A Centred Tag Fuse, NH1, 690V ac
  • RS Stock No. 703-8796
  • Mfr. Part No. 160NHG1B-690
Each
MYR70.89
In Stock
Better World
Schneider Electric Surge Protector, 65kA, Clip-On Mount
  • RS Stock No. 212-0148
  • Mfr. Part No. A9L65501
Each
MYR1,158.93
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 6A Curve C, 440V AC, 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-2308
  • Mfr. Part No. A9F07206
Each
MYR591.11
In Stock
Eaton Eaton Moeller NZM Door Coupling Handle for use with N(S)1, NZM1
  • RS Stock No. 240-428
  • Mfr. Part No. 100675 NZM1-XTVDV-0-NA
Each
MYR595.90
Being discontinued
RS PRO PC Board Non Resettable Fuse, Axial 4A, 250V ac
  • RS Stock No. 764-9560
Each (In a Pack of 10)
MYR3.487
In Stock
Littelfuse SMD Non Resettable Fuse 750mA, 125V ac/dc
  • RS Stock No. 541-3366P
  • Mfr. Part No. 0451.750HL
Each (Supplied on a Reel)
MYR1.442
Temporarily out of stock
Eaton 100A British Standard Fuse, B1, 415V, 111mm
  • RS Stock No. 181-8634
  • Mfr. Part No. CD100M125
Each
MYR159.59
In Stock
Better World
ABB SN201 MCB, 2P, 13A Curve C
  • RS Stock No. 232-0343
  • Mfr. Part No. 2CSS255101R0134 SN201-C13
Each
MYR222.22
Temporarily out of stock
Better World
Schneider Electric Acti9 1 Phase Busbar, 230 V, 400 V, 9mm Pitch
  • RS Stock No. 238-4092
  • Mfr. Part No. A9XPP724
Each (In a Pack of 6)
MYR640.468
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