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

22 of 999+
Temporarily out of stock
Siemens SIRIUS Cover for use with 3RV2742
  • RS Stock No. 210-9275
  • Mfr. Part No. 3RV2948-1LA00
Each
MYR83.03(exc. VAT)
In Stock
RS PRO 10A T Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 177-8099
Each (In a Pack of 5)
MYR7.454(exc. VAT)
In Stock
RS PRO 1.6A T Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 247-4009
Each (In a Pack of 10)
MYR4.75(exc. VAT)
In Stock
ETA Thermal Circuit Breaker - 1410-L Single Pole 250V Voltage Rating PCB Mount, 630mA Current Rating
  • RS Stock No. 409-750
  • Mfr. Part No. 1410-L210-L2F1-S02-0.63A
Each
MYR62.65(exc. VAT)
In Stock
ABB FH200 RCCB, 25A, 4 Pole, 30mA, Type AC
  • RS Stock No. 540-1644
  • Mfr. Part No. 2CSF204006R1250 FH204 AC-25/0,03
Each
MYR401.35(exc. VAT)
Being discontinued
RS PRO 2A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-722
Each (In a Pack of 10)
MYR2.261(exc. VAT)
Limited stock
SIBA 30A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 314-4844
  • Mfr. Part No. 50-179-06/30A
Each (In a Pack of 5)
MYR56.558(exc. VAT)
In Stock
RS PRO 6A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 177-8113
Each (In a Pack of 50)
MYR1.481(exc. VAT)
In Stock
Eaton 160A Rail Mount Fuse Holder for 00 Fuse, 1P, 690V ac
  • RS Stock No. 765-2942
  • Mfr. Part No. SD00-D
Each
MYR55.94(exc. VAT)
In Stock
Bourns 0.3A Resettable Fuse, 60V
  • RS Stock No. 647-8005
  • Mfr. Part No. MF-SM030-2
Each (In a Pack of 10)
MYR1.594(exc. VAT)
Temporarily out of stock
Siemens SENTRON 3 Phase Busbar, 18mm Pitch
  • RS Stock No. 202-7199
  • Mfr. Part No. 5ST3712
Each
MYR826.18(exc. VAT)
Temporarily out of stock
Schneider Electric 480V ac Undervoltage Release Circuit Trip for use with ComPacT
  • RS Stock No. 339-774
  • Mfr. Part No. 33673
Each
MYR3,776.05(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 6A Curve D, 100 → 130V AC, 12 → 144V DC, 6 kA Breaking Capacity
  • RS Stock No. 734-9652
  • Mfr. Part No. A9F75206
Each
MYR326.87(exc. VAT)
In Stock
Eaton 10A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 703-8386
  • Mfr. Part No. C10G10
Each (In a Pack of 10)
MYR7.129(exc. VAT)
In Stock
Siemens 2A DII Diazed Fuse, E27 Thread Size, gG, 500V ac
  • RS Stock No. 396-152
  • Mfr. Part No. 5SB211
Each (In a Pack of 5)
MYR9.194(exc. VAT)
In Stock
Schneider Electric Acti 9 MCB, 3P, 16A Curve C, 230V AC, 7.5 kA Breaking Capacity
  • RS Stock No. 200-6158
  • Mfr. Part No. A9PA2716
Each
MYR1,080.97(exc. VAT)
In Stock
Siemens 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 1P, 690V ac
  • RS Stock No. 657-1429
  • Mfr. Part No. 3NC1091
Each (In a Pack of 12)
MYR114.464(exc. VAT)
In Stock
Schurter 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 1P, 250V ac
  • RS Stock No. 867-4356
  • Mfr. Part No. 3101.0031
Each (In a Pack of 10)
MYR19.345(exc. VAT)
In Stock
Eaton 15A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 848-2687
  • Mfr. Part No. ABC-15-R
Each
MYR3.82(exc. VAT)
In Stock
Better World
Schneider Electric Multi 9 MCB, 1P, 10A Curve D, 10 kA Breaking Capacity
  • RS Stock No. 219-9143
  • Mfr. Part No. M9F23110
Each
MYR165.61(exc. VAT)
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