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

240 / 999+
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.6kA Ekip Touch LI, 4 channels
  • RS Stock No. 259-3536
  • Mfr. Part No. 1SDA071514R1
Each
MYR37,115.78
Temporarily out of stock
RS PRO 500mA T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 177-8059
1 Box of 1000
MYR5,757.21
Temporarily out of stock
RS PRO 800mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 177-8052
1 Box of 1000
MYR1,375.26
In Stock
Littelfuse PCB Mount Fuse Holder, 80V dc
  • RS Stock No. 820-7268
  • Mfr. Part No. 178.6165.0001
Each
MYR15.60
In Stock
Eaton MEMShield MCB, 1P, 32A Curve B, 230V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 124-3025
  • Mfr. Part No. EMBH132 EMBH132
Each
MYR153.38
Temporarily out of stock
Legrand DX3 Circuit Breaker, 3P, 16A Curve B, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 266-1318
  • Mfr. Part No. 407532
Each
MYR1,253.38
In Stock
Littelfuse 0.2A Resettable Fuse, 30V dc
  • RS Stock No. 517-7105
  • Mfr. Part No. MINISMDC020F-2
Each (In a Pack of 10)
MYR1.615
In Stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 250A, Fixed Mount
  • RS Stock No. 254-6359
  • Mfr. Part No. C25H3TM250
Each
MYR11,289.80
In Stock
Phoenix Contact Electronic Device Circuit Breaker Electronic Circuit breaker 10A 24V CBMC, 1 channels , DIN Rail Mount
  • RS Stock No. 207-2719
  • Mfr. Part No. 2906032
Each
MYR654.22
In Stock
Littelfuse 30A Green Blade Car Fuse, 32V dc
  • RS Stock No. 787-4132P
  • Mfr. Part No. 0287030.PXCN
Each (Supplied in a Bag)
MYR1.376
In Stock
Littelfuse SMD Non Resettable Fuse 5A, 125V ac/dc
  • RS Stock No. 219-6260
  • Mfr. Part No. 0154005.DRT
Each (In a Pack of 10)
MYR15.872
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 63A 3VA2, 4 channels
  • RS Stock No. 157-057
  • Mfr. Part No. 3VA2163-8HK42-0AA0
Each
MYR7,118.64
In Stock
Wickmann 2A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 174-0652
  • Mfr. Part No. 0477002.MXP
Each (In a Pack of 5)
MYR8.712
In Stock
Allen Bradley MCB, 4A Curve C, 230V AC, 48V DC
  • RS Stock No. 264-9403
  • Mfr. Part No. 1489-M1C040
Each
MYR296.68
In Stock
Phoenix Contact 1 Phase Surge Protector, 50kA, 250V ac, DIN Rail Mount
  • RS Stock No. 712-5272
  • Mfr. Part No. 2800186
Each
MYR1,691.97
In Stock
Eaton 32A British Standard Fuse, A1, 415V ac, 42.5mm
  • RS Stock No. 139-906
  • Mfr. Part No. NITD32M40
Each (In a Pack of 5)
MYR60.07
In Stock
Eaton 6A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8229
  • Mfr. Part No. PV-6A10F
Each
MYR59.62
In Stock
Siemens 40A Centred Tag Fuse, NH000, 690V ac
  • RS Stock No. 396-364
  • Mfr. Part No. 3NE1802-0
Each (In a Pack of 3)
MYR499.273
Temporarily out of stock
Lovato 3 Phase Surge Protector, 100kA
  • RS Stock No. 216-8289
  • Mfr. Part No. SA1B3NA320R
Each
MYR9,117.01
Temporarily out of stock
Eaton 40A Cartridge Fuse, 30 x 57mm
  • RS Stock No. 261-579
  • Mfr. Part No. 40LR85
1 Pack of 20
MYR1,545.00
1
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