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

39 / 999+
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
In Stock
Mersen 63A Ceramic Cartridge Fuse, 22 x 58mm
  • RS Stock No. 188-7454
  • Mfr. Part No. Y215646
Each (In a Pack of 10)
MYR27.002
In Stock
Schneider Electric 250V ac Shunt Trip Circuit Trip for use with DIN rail mounting support
  • RS Stock No. 219-9231
  • Mfr. Part No. A9E18070
Each
MYR220.30
In Stock
Schurter 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 269-3855
  • Mfr. Part No. 7010.3440
Each
MYR4.80
In Stock
SIBA 2A F Glass Cartridge Fuse, 5 x 30mm
  • RS Stock No. 361-8187
  • Mfr. Part No. 171530.2
Each (In a Pack of 10)
MYR13.034
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
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
Temporarily out of stock
Better World
Siemens RCBO, 32A Current Rating, 2P Poles, 30mA Trip Sensitivity, Sentron Range
  • RS Stock No. 225-8763
  • Mfr. Part No. 5SU1354-7LB40
Each
MYR1,698.65
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 Fuse Holder Trip Indicator Kit
  • RS Stock No. 182-1492
  • Mfr. Part No. MC-700
Each
MYR156.76
In Stock
Better World
Schneider Electric Acti 9 C60H-DC MCB, 2P, 2A Curve C, 500V DC
  • RS Stock No. 772-1524
  • Mfr. Part No. A9N61522
Each
MYR695.78
Temporarily out of stock
Better World
Siemens 3VA911 RCD, 160A, 3 Pole, Type A
  • RS Stock No. 210-9286
  • Mfr. Part No. 3VA9113-0RS20
Each
MYR6,579.14
In Stock
Mersen 1A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 270-3119
  • Mfr. Part No. V090569
Each (In a Box of 10)
MYR3.558
In Stock
Eaton 50mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 849-6046
  • Mfr. Part No. GDB-50MA
Each (In a Pack of 5)
MYR31.412
In Stock
Eaton, NZM MCCB 3P 160A, Breaking Capacity 80 kA, Fixed Mount
  • RS Stock No. 628-8076
  • Mfr. Part No. 266005 PN2-160
1 Box of 1
MYR2,362.86
Temporarily out of stock
Phoenix Contact EC-E Electronic Circuit Breaker 8A 24V EC-E, 1 channels , DIN Rail
  • RS Stock No. 131-311
  • Mfr. Part No. 0903047
Each (In a Pack of 6)
MYR397.152
In Stock
Legrand 6A Ceramic Cartridge Fuse, 14 x 51mm
  • RS Stock No. 266-3132
  • Mfr. Part No. 0 143 06
1 Box of 10
MYR207.92
In Stock
Better World
Schneider Electric Multi 9 C60N MCB, 2P, 3A Curve C, 10 kA Breaking Capacity
  • RS Stock No. 214-2062
  • Mfr. Part No. M9F11203
Each
MYR387.10
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
In Stock
Eaton 3.15A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 849-5762
  • Mfr. Part No. GMC-3-15-R
Each
MYR5.72
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