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

8 / 999+
In Stock
Littelfuse SMD Non Resettable Fuse 1A, 125V ac/dc
  • RS Stock No. 541-3625
  • Mfr. Part No. 0452001.MRL
Each (In a Pack of 10)
MYR7.395
Limited stock
ETA Thermal Circuit Breaker - 2-5700 Single Pole 250V Voltage Rating Panel Mount, 10A Current Rating
  • RS Stock No. 405-9141
  • Mfr. Part No. 2-5700-IG1-P10-DD-000040-10A
Each
MYR140.84
In Stock
Littelfuse 8A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4527
  • Mfr. Part No. 0218008.MXP
Each (In a Pack of 10)
MYR7.228
Temporarily out of stock
Legrand DX3 Circuit Breaker, 4P, 32A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 266-1317
  • Mfr. Part No. 406913
Each
MYR1,182.65
In Stock
Eaton 250mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1262
  • Mfr. Part No. S500-250-R
Each (In a Pack of 10)
MYR3.851
Temporarily out of stock
Eaton xEffect - FRCmM RCCB, 63A, 2 Pole, 30mA, Type A, 240V ac
  • RS Stock No. 123-599
  • Mfr. Part No. 170433 FRCMM-63/2/003-A
Each
MYR1,521.56
Temporarily out of stock
Eaton 2A Bolted Tag Fuse, 240V ac, 35mm
  • RS Stock No. 181-8840
  • Mfr. Part No. LST2
Each
MYR36.39
In Stock
Eaton 20A Bolt In Mount 6.3 x 32mm Fuse Block, 300V ac/dc
  • RS Stock No. 852-7225
  • Mfr. Part No. S-8201-1-R
Each
MYR8.67
In Stock
Littelfuse 315mA F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 725-8048
  • Mfr. Part No. 0216.315MXP
Each (In a Bag of 10)
MYR6.732
Limited stock
Eaton 1A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 537-1212
  • Mfr. Part No. S500-1-R
Each (In a Pack of 10)
MYR1.209
In Stock
Eaton xEffect MCB, 1P, 6A Curve D, 240V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-7033
  • Mfr. Part No. 278578 FAZ-D6/1
Each
MYR166.05
In Stock
Eaton 750mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 848-3059
  • Mfr. Part No. GMA-750-R
Each
MYR3.25
In Stock
Eaton 7A F Ceramic Cartridge Fuse, 6.3 x 25mm
  • RS Stock No. 412-582
  • Mfr. Part No. TDC180-7A
Each (In a Pack of 10)
MYR1.694
Temporarily out of stock
ABB S201 Circuit Breaker, 1+N, 16A Curve C, 230V AC, 110V DC, 10 kA Breaking Capacity
  • RS Stock No. 287-6357
  • Mfr. Part No. 2CDS251103R0164
Each (In a Pack of 5)
MYR201.364
Temporarily out of stock
Eaton 12A T Melamine Cartridge Fuse, 1.5 x 0.41in
  • RS Stock No. 261-918
  • Mfr. Part No. LP-CC-12
1 Pack of 10
MYR2,871.33
In Stock
Eaton xEffect MCB, 1+N, 20A Curve C, 240V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-7093
  • Mfr. Part No. 278675 FAZ-C20/1N
Each
MYR375.05
In Stock
Schurter PC Board Non Resettable Fuse, Radial 500mA, 250V ac
  • RS Stock No. 284-5300
  • Mfr. Part No. 0034.6612
Each (In a Pack of 10)
MYR3.129
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 25A Curve C, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-7728
  • Mfr. Part No. 2CDS252001R0254 S202-C25
Each
MYR289.28
Temporarily out of stock
Siemens 630A Slotted Tag Fuse, NH3, 690V
  • RS Stock No. 230-3005
  • Mfr. Part No. 3NE1436-3
Each (In a Pack of 3)
MYR1,409.093
In Stock
Littelfuse SMD Non Resettable Fuse 500mA, 125V
  • RS Stock No. 738-2839
  • Mfr. Part No. 0452.500MRL
Each (In a Pack of 10)
MYR6.386
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