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
Fuses - PCB
Fuses - PCB

46580 Products showing for Fuses & Circuit Breakers

36 / 999+
Limited stock
Eaton 10A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-0966
  • Mfr. Part No. S500-10-R
Each (In a Pack of 10)
MYR1.056
In Stock
ETI 25A Bottle Fuse Holder, 1P, 500V ac
  • RS Stock No. 289-8859
  • Mfr. Part No. 2322009
Each
MYR49.51
In Stock
Mersen 10A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 188-6984
  • Mfr. Part No. S218194
Each (In a Pack of 10)
MYR8.423
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 400A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9781
  • Mfr. Part No. LV540306
Each
MYR5,575.37
In Stock
Mersen 10A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 188-7268
  • Mfr. Part No. Y211552
Each (In a Pack of 10)
MYR8.23
In Stock
Eaton 2A D01 Neozed Fuse, gG, 400V ac
  • RS Stock No. 181-8904
  • Mfr. Part No. 2NZ01
Each
MYR19.70
Temporarily out of stock
Hager RCBO, 16A Current Rating, 1P + N Poles, 30mA Trip Sensitivity, Type C
  • RS Stock No. 597-993
  • Mfr. Part No. ADH823F
Each
MYR1,523.90
In Stock
Eaton 32A Rail Mount Fuse Holder for F1 Fuse, 1P, 550V ac
  • RS Stock No. 418-495
  • Mfr. Part No. 32NNSF
Each
MYR45.25
In Stock
SIBA 3.15A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 783-3311
  • Mfr. Part No. 70-007-65/3.15A
Each (In a Pack of 10)
MYR1.032
Temporarily out of stock
Better World
Schneider Electric ID RCCB, 40A, 2 Pole, 30mA, Type A, 240V ac
  • RS Stock No. 214-2101
  • Mfr. Part No. M9R31240
Each
MYR1,131.10
Temporarily out of stock
Better World
Schneider Electric ID RCCB, 40A, 4 Pole, 30mA, Type AC, 415V ac
  • RS Stock No. 214-2097
  • Mfr. Part No. M9R11440
Each
MYR1,163.61
In Stock
Better World
Schneider Electric Multi 9 C60N MCB, 3P, 10A Curve D, 10 kA Breaking Capacity
  • RS Stock No. 214-2078
  • Mfr. Part No. M9F12310
Each
MYR1,112.15
In Stock
Europa RCBO, 32A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A, EUBLMC Range
  • RS Stock No. 210-4732
  • Mfr. Part No. EUBLMC32B30A
Each
MYR308.62
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 10A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3341
  • Mfr. Part No. A9F54210
Each
MYR602.51
In Stock
Better World
Schneider Electric Acti 9 2 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2720
  • Mfr. Part No. A9XPH212
Each
MYR245.73
Being discontinued
RS PRO 2A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6035
Each (In a Pack of 10)
MYR1.949
Temporarily out of stock
Eaton 1A Cartridge Fuses, 14 x 51mm
  • RS Stock No. 261-880
  • Mfr. Part No. C14M1S
1 Pack of 10
MYR408.83
In Stock
ABB RCBO, 16A Current Rating, 1P+N Poles, 10mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6950
  • Mfr. Part No. 2CSR275180R0164 DS201 M C16 A10
Each
MYR849.09
Unavailable
Schneider Electric, NSX MCCB 3P 160A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 219-8355
  • Mfr. Part No. LV430890
Each
MYR12,525.99
In Stock
WJ Furse Copper Earth Bar L. 475mm x W. 90mm x H. 96mm 6 Ways
  • RS Stock No. 124-2500
  • Mfr. Part No. 7TCA083670R0676 LK243-6
Each
MYR1,239.42
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