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

46578 Products showing for Fuses & Circuit Breakers

149 / 999+
In Stock
RS PRO 7A F Ceramic Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 413-232
Each (In a Pack of 10)
MYR4.00
Temporarily out of stock
Better World
Schneider Electric iID RCCB, 80A, 4 Pole, 300mA
  • RS Stock No. 776-3717
  • Mfr. Part No. A9R14480
Each
MYR1,391.75
In Stock
SIBA 16A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 768-6121
  • Mfr. Part No. 5021526.16
Each
MYR94.13
In Stock
Eaton 10A British Standard Fuse, A2, 550V ac, 73mm
  • RS Stock No. 413-333
  • Mfr. Part No. AAO10
Each (In a Pack of 5)
MYR34.772
Limited stock
WAGO 30A Fuse Holder for 10 x 38mm Fuse, 1P, 600V ac
  • RS Stock No. 279-1654
  • Mfr. Part No. 811-410
Each
MYR72.05
In Stock
Eaton xEffect MCB, 3P, 25A Curve C, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3320
  • Mfr. Part No. 278875 FAZ-C25/3
Each
MYR630.40
In Stock
ABB Tmax XT Cover for use with Tmax XT
  • RS Stock No. 232-0209
  • Mfr. Part No. 1SDA066670R1 HTC XT4 TER 2pcs
Each
MYR137.35
In Stock
RS PRO PC Board Non Resettable Fuse, Radial 4A, 250V ac
  • RS Stock No. 611-0406
Each (In a Pack of 10)
MYR4.134
In Stock
ABB RCBO, 10A Current Rating, 2P Poles, 100mA Trip Sensitivity, System Pro M Compact Range
  • RS Stock No. 201-6894
  • Mfr. Part No. 2CSR255180R2105 DS201 B10 A100
Each
MYR1,347.92
In Stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - GV3P 3 Pole 690V ac Voltage Rating DIN Rail Mount, 73A Current Rating
  • RS Stock No. 188-4747
  • Mfr. Part No. GV3P73
Each
MYR1,412.52
In Stock
Better World
Schneider Electric 250V ac Push Button Push Button
  • RS Stock No. 790-9187
  • Mfr. Part No. A9E18038
Each
MYR220.79
In Stock
ABB F200 RCCB, 63A, 4 Pole, 30mA, Type AC
  • RS Stock No. 537-7434
  • Mfr. Part No. 2CSF204001R1630 F204 AC-63/0,03
Each
MYR1,345.35
In Stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 3P 800A, Fixed Mount
  • RS Stock No. 232-0129
  • Mfr. Part No. 1SDA060214R1 T6N800 FF TMA 800A
Each
MYR14,474.69
In Stock
Better World
Schneider Electric RCBO, 32A Current Rating, 4P Poles, 30mA Trip Sensitivity, Acti 9 Range
  • RS Stock No. 247-1931
  • Mfr. Part No. A9D87432
Each
MYR2,927.17
In Stock
Littelfuse 150A Grey BF1 Car Fuse, 32V dc
  • RS Stock No. 431-6769
  • Mfr. Part No. 153.5631.6151
1 Pack of 5
MYR86.18
Temporarily out of stock
Eaton 32A Rail Mount Fuse Holder for 10 x 38mm Fuse, 3P, 690V ac
  • RS Stock No. 182-1683
  • Mfr. Part No. CHM3DIU
Each
MYR156.97
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 3P, 40A Curve B, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3231
  • Mfr. Part No. A9F53340
Each
MYR1,225.81
In Stock
Littelfuse 32mA F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 725-8045
  • Mfr. Part No. 0217.032MXP
Each (In a Bag of 10)
MYR13.098
In Stock
Littelfuse 0.5A Resettable Fuse, 24V dc
  • RS Stock No. 517-7111
  • Mfr. Part No. MINISMDC050F-2
Each (In a Pack of 10)
MYR1.539
In Stock
Siemens 32A Fuse Holder for 10 x 38mm Fuse, 1P, 690V ac
  • RS Stock No. 269-8374
  • Mfr. Part No. 3NW7014
Each
MYR67.75
1
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