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

5 / 999+
In Stock
Eaton 16A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 852-6923
  • Mfr. Part No. HTB-34M-R
Each
MYR52.77
In Stock
Mersen 25A Rail Mount Fuse Holder for 8 x 31mm Fuse, 1P, 400V ac
  • RS Stock No. 189-5332
  • Mfr. Part No. X1062689 / CMC81I
Each
MYR60.75
Temporarily out of stock
Eaton 3.15A Cartridge Fuse, 195 x 25.4mm
  • RS Stock No. 228-648
  • Mfr. Part No. 12ABCNA3.15 12KV 3.15A FUSE
Each
MYR1,014.38
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 25A Curve B, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7573
  • Mfr. Part No. 2CDS252001R0255 S202-B25
Each
MYR276.40
In Stock
Eaton 40A Bolted Tag Fuse, 250 V dc, 500V ac, 111mm
  • RS Stock No. 181-8687
  • Mfr. Part No. BD40
Each
MYR72.27
In Stock
ABB RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C, System Pro M Compact Range
  • RS Stock No. 201-6929
  • Mfr. Part No. 2CSR255080R1164 DS201 C16 AC30
Each
MYR863.00
In Stock
Schurter Surface Mount Fuse 4A, 250V ac
  • RS Stock No. 270-7942
  • Mfr. Part No. 3403.0172.11
Each
MYR5.06
In Stock
Better World
Schneider Electric Multi 9 MCB, 1P, 2A Curve C, 10 kA Breaking Capacity
  • RS Stock No. 219-9147
  • Mfr. Part No. M9F42102
Each
MYR579.31
In Stock
Eaton RCCB, 40A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 227-0711
  • Mfr. Part No. 267444 PFGM-40/2/003-A
Each
MYR297.86
Temporarily out of stock
Eaton 250A British Standard Fuse, B3, 415V ac, 111mm
  • RS Stock No. 139-984
  • Mfr. Part No. ED250
Each
MYR334.38
In Stock
Littelfuse 15A Blue Blade Car Fuse, 32V dc
  • RS Stock No. 787-4114
  • Mfr. Part No. 0297015.WXNV
Each (In a Pack of 10)
MYR1.406
In Stock
Eaton 100A British Standard Fuse, A4, 660V ac, 93.7mm
  • RS Stock No. 418-546
  • Mfr. Part No. TCP100
Each
MYR211.17
In Stock
Eaton MEMShield MCB, 1P, 6A Curve C, 230V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 124-3031
  • Mfr. Part No. EMCH106 EMCH106
Each
MYR160.78
In Stock
ABB High Performance S800S MCB, 1P, 100A Curve C, 400V AC, 250V DC, 50 kA Breaking Capacity
  • RS Stock No. 435-358
  • Mfr. Part No. 2CCG001227R0001
Each
MYR652.84
In Stock
Better World
Schneider Electric Acti 9 Acti9 iDT40K MCB, 1+N, 2A Curve C, 230V AC, 4.5 kA Breaking Capacity
  • RS Stock No. 238-3409
  • Mfr. Part No. A9P71602
Each
MYR219.43
In Stock
Littelfuse 0.4A Resettable Fuse, 240V dc
  • RS Stock No. 495-0757P
  • Mfr. Part No. LVR040K
Each (Supplied in a Bag)
MYR3.812
In Stock
Eaton 125A Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 181-8876
  • Mfr. Part No. C22M125
Each
MYR15.20
In Stock
Legrand 10A Ceramic Cartridge Fuse, 10 x 25mm
  • RS Stock No. 293-8137
  • Mfr. Part No. 0 116 10
Each (In a Pack of 10)
MYR9.499
In Stock
Eaton 15A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 851-1836
  • Mfr. Part No. S506-15-R
Each (In a Pack of 5)
MYR8.272
In Stock
ABB RCBO, 32A Current Rating, 2P Poles, 300mA Trip Sensitivity, Type C, System Pro M Compact Range
  • RS Stock No. 201-6975
  • Mfr. Part No. 2CSR255080R3324 DS201 C32 AC300
Each
MYR675.08
Results per page
1
5
2329

Related links