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

280 / 999+
In Stock
Schurter Fuse Holder Fusedrawer
  • RS Stock No. 867-6848
  • Mfr. Part No. 4303.2401
Each
MYR26.04
Temporarily out of stock
Schneider Electric Panelset Busbar
  • RS Stock No. 444-136
  • Mfr. Part No. NSYTBCN365
Each
MYR8,188.17
In Stock
Eaton, xEnergy MCCB 1P 125A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 628-8004
  • Mfr. Part No. 265723 NZMN2-M125
1 Box of 1
MYR4,028.69
In Stock
Better World
ABB System Pro M Compact S200 MCB, 3P, 16A Curve K, 440V AC, 20 kA Breaking Capacity
  • RS Stock No. 514-0226
  • Mfr. Part No. 2CDS253001R0467 S203-K16
Each
MYR582.20
In Stock
ABB DDA200 RCD, 25A, 2 Pole, 300mA, Type AC
  • RS Stock No. 183-3649
  • Mfr. Part No. 2CSB202001R3250
Each
MYR681.19
In Stock
Eaton 1A Slow-Blow Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-102
  • Mfr. Part No. C10M1 CYLINDRICAL FUSE 10 x 38 1A AM 500V AC
1 Pack of 10
MYR60.83
In Stock
Mersen 1A Glass Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 136-0563
  • Mfr. Part No. HP10M1
Each
MYR51.17
Limited stock
Legrand HX³ 1 Phase Busbar, 230V, 17.7mm Pitch
  • RS Stock No. 823-4699
  • Mfr. Part No. 4 049 28
Each
MYR65.85
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 1kA, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 346-739
  • Mfr. Part No. C100L450FM
Each
MYR83,891.22
Temporarily out of stock
Eaton 6A British Standard Fuse, 240V, 35mm
  • RS Stock No. 181-8539
  • Mfr. Part No. LST6
1 Box of 20
MYR648.38
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA, 3 channels
  • RS Stock No. 155-799
  • Mfr. Part No. 3VA2325-8HK32-0AA0
Each
MYR14,454.63
Temporarily out of stock
Siemens SENTRON Connection Kit
  • RS Stock No. 277-0841
  • Mfr. Part No. 3WA9111-0AX22
Each
MYR324.87
In Stock
Schurter PC Board Non Resettable Fuse, Radial 3.15A, 250V ac
  • RS Stock No. 284-5158
  • Mfr. Part No. 0034.6019
Each (In a Pack of 10)
MYR3.237
In Stock
Schneider Electric Motor Mechanism for use with ComPacT NSX New Generation
  • RS Stock No. 130-994
  • Mfr. Part No. LV429441
Each
MYR6,961.11
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 40A 3VA2, 4 channels
  • RS Stock No. 157-404
  • Mfr. Part No. 3VA2140-8HM42-0AA0
Each
MYR9,074.90
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 10 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-731
  • Mfr. Part No. 3VA5110-1MU31-0AA0
Each
MYR3,203.12
In Stock
Eaton 35A DIII Bottle Fuse, E33 Thread Size, gG, 500V ac
  • RS Stock No. 182-1537
  • Mfr. Part No. 35D33
Each (In a Box of 25)
MYR18.324
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-4134
  • Mfr. Part No. 3VA2116-8JP46-0AA0
Each
MYR13,317.32
In Stock
Siemens SENTRON Busbar
  • RS Stock No. 203-3279
  • Mfr. Part No. 8US1921-2BA00
Each (In a Pack of 100)
MYR15.936
In Stock
Better World
Schneider Electric Easy 9 EZ9 MCB, 1P, 16A Curve B, 230V AC, 6 kA Breaking Capacity
  • RS Stock No. 850-8603
  • Mfr. Part No. EZ9F16116
Each
MYR39.51
1
280
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