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

27 / 999+
In Stock
Littelfuse 5A T Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 541-3041
  • Mfr. Part No. 0313005.MXP
Each (In a Pack of 10)
MYR4.941
In Stock
Eaton 70 → 100A Ferrule Fuse Block, 600V
  • RS Stock No. 182-1358
  • Mfr. Part No. JM60100-3CR
Each
MYR1,414.67
In Stock
RS PRO 3.15A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 414-049
Each (In a Pack of 10)
MYR5.20
In Stock
Mersen 2A FF Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 188-6748
  • Mfr. Part No. N084307
Each (In a Pack of 10)
MYR22.31
Limited stock
Eaton 15A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 848-4188
  • Mfr. Part No. LP-CC-15
Each
MYR290.05
In Stock
Eaton 10A gG/gL Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-176
  • Mfr. Part No. C10G10 CYLINDRICAL FUSE 10 x 38 10A GG 500V AC
1 Pack of 10
MYR47.67
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 3P, 63A Curve D, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 746-8191
  • Mfr. Part No. 2CDS273001R0631 S203M-D63
Each
MYR612.82
Limited stock
Better World
Schneider Electric Acti 9 4 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2770
  • Mfr. Part No. A9XPH512
Each
MYR337.96
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 500mA Curve C, 253V AC, 72V DC, 20 kA Breaking Capacity
  • RS Stock No. 231-9670
  • Mfr. Part No. 2CDS251001R0984 S201 C 0.5A - 10 KA
1 Box of 1
MYR114.54
In Stock
Better World
Schneider Electric Compact Nsx, Compact Nsx Dc Plug In Kit for use with Compact Nsx 100/160/250
  • RS Stock No. 221-1181
  • Mfr. Part No. LV429289
Each
MYR1,688.00
Being discontinued
RS PRO 1.5A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6032
Each (In a Pack of 10)
MYR1.89
Limited stock
ETI 2A D01 Neozed Fuse, E14 Thread Size, gG, 400V ac
  • RS Stock No. 415-935
  • Mfr. Part No. 2211001
Each (In a Pack of 5)
MYR4.822
Temporarily out of stock
Schneider Electric Acti9 3, 3+N Phase Distribution Board, 14 Way, 250 A
  • RS Stock No. 654-722
  • Mfr. Part No. SEA9BPN8AFD6
Each
MYR3,839.54
In Stock
Schneider Electric Resi9 R9PF MCB, 3P, 32A, 400V AC, 3000 A Breaking Capacity
  • RS Stock No. 276-8969
  • Mfr. Part No. R9PFC732
Each
MYR554.23
In Stock
Eaton 32A Rail Mount Fuse Holder for A2 Fuse, 1P, 690V ac
  • RS Stock No. 413-917
  • Mfr. Part No. RS32H
Each
MYR188.38
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 63A, Fixed Mount
  • RS Stock No. 260-7545
  • Mfr. Part No. C11B4TM063L
Each
MYR2,847.41
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 40A Curve B, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3174
  • Mfr. Part No. A9F53140
Each
MYR226.37
In Stock
Littelfuse SMD Non Resettable Fuse 500mA, 125V ac/dc
  • RS Stock No. 541-3350
  • Mfr. Part No. 0451.500MRL
Each (In a Pack of 10)
MYR3.361
In Stock
Better World
Schneider Electric Multi 9 MCB Mini Circuit Breaker, 3P, 15A Curve C, 277V AC
  • RS Stock No. 256-6807
  • Mfr. Part No. M9F52315
Each
MYR1,407.76
In Stock
ABB RCBO, 63A Current Rating, 2P Poles, Type B
  • RS Stock No. 237-5048
  • Mfr. Part No. 2CSR252001R1635
Each
MYR1,611.68
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