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

18 / 999+
In Stock
Schneider Electric Acti9 iID RCCB, 100A, 4 Pole, 100mA, Type AC, 380 → 415V ac
  • RS Stock No. 130-796
  • Mfr. Part No. A9R12491
Each
MYR2,713.01
In Stock
Eaton 3A T Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 848-3961
  • Mfr. Part No. FNM-3
Each
MYR127.28
In Stock
RS PRO PC Board Non Resettable Fuse, Radial 3.15A, 250V ac
  • RS Stock No. 767-5052
Each (In a Pack of 10)
MYR1.479
In Stock
Eaton 15A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 851-1674
  • Mfr. Part No. KTK-15
Each
MYR161.20
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 4P 80A, Fixed Mount
  • RS Stock No. 119-287
  • Mfr. Part No. C10N6TM080
Each
MYR6,898.47
In Stock
Siemens 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P, 690V ac
  • RS Stock No. 203-2048
  • Mfr. Part No. 3NW7013
Each
MYR62.19
In Stock
RS PRO 16A Rail Mount Fuse Holder, 600V ac
  • RS Stock No. 501-809
Each (In a Pack of 10)
MYR31.974
In Stock
Better World
Schneider Electric Circuit Trip
  • RS Stock No. 219-9354
  • Mfr. Part No. LV429386
Each
MYR732.38
In Stock
Littelfuse 15A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 337-5240
  • Mfr. Part No. 0KLK015.T
Each (In a Pack of 5)
MYR157.262
In Stock
Littelfuse SMD Non Resettable Fuse 1.5A, 125V ac/dc
  • RS Stock No. 541-3394
  • Mfr. Part No. 045101.5MRL
Each (In a Pack of 10)
MYR5.92
In Stock
Eaton 500mA Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8364
  • Mfr. Part No. C10G0-5
Each (In a Pack of 10)
MYR8.281
Being discontinued
RS PRO 3A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6048
Each (In a Pack of 10)
MYR1.826
In Stock
Better World
Schneider Electric Multi 9 MCB, 2P, 6A Curve C, 10 kA Breaking Capacity
  • RS Stock No. 219-9158
  • Mfr. Part No. M9F42206
Each
MYR1,362.37
In Stock
MEAN WELL Surge Protector, 20kA, 1500V (Volts)
  • RS Stock No. 424-954
  • Mfr. Part No. SPD-20-240P
Each
MYR82.96
In Stock
Eaton 16A gG/gL Cartridge Fuse, 10 x 38mm
  • RS Stock No. 229-265
  • Mfr. Part No. C10G16 CYLINDRICAL FUSE 10 x 38 16A GG 500V AC
1 Pack of 10
MYR47.67
In Stock
Better World
ABB System Pro M Compact S200M MCB, 1P, 2A Curve C, 253V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 535-4100
  • Mfr. Part No. 2CDS271001R0024 S201M-C2
Each
MYR143.63
In Stock
Better World
ABB System Pro M Compact S200M MCB, 2P, 20A Curve D, 440V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-8172
  • Mfr. Part No. 2CDS272001R0201 S202M-D20
Each
MYR298.99
In Stock
Schurter SMD Non Resettable Fuse 500mA, 250 V ac, 125V dc
  • RS Stock No. 754-6301P
  • Mfr. Part No. 3405.0163.24
Each (Supplied on a Reel)
MYR3.079
In Stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 8A Curve C, 230V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-7659
  • Mfr. Part No. 2CDS251001R0084 S201-C8
Each
MYR78.76
In Stock
Better World
Schneider Electric Acti 9 C60H-DC MCB, 1P, 5A Curve C, 250V DC, 20 kA Breaking Capacity
  • RS Stock No. 776-3161
  • Mfr. Part No. A9N61505
Each
MYR340.24
Results per page
1
18
2329

Related links