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

235 / 999+
Temporarily out of stock
Better World
Schneider Electric 4A Cartridge Fuse, 8.5 x 32mm
  • RS Stock No. 219-9035
  • Mfr. Part No. DF2BA0400
Each (In a Pack of 10)
MYR49.153
In Stock
SIBA 80A NH Fuse, NH000, 500V ac
  • RS Stock No. 421-570
  • Mfr. Part No. 20-000-04/80A
Each
MYR222.51
Temporarily out of stock
Schneider Electric CompacT Cover Frame for use with ComPacT NS1600b
  • RS Stock No. 654-861
  • Mfr. Part No. C320H3FM
Each
MYR67,226.11
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Dip LSI, 4 channels
  • RS Stock No. 259-4525
  • Mfr. Part No. 1SDA072763R1
Each
MYR26,019.47
Temporarily out of stock
Phoenix Contact CAPAROC Electronic Circuit Breaker 4A 12 → 24V E1 12-24DC, 1 channels , Plug-On
  • RS Stock No. 269-7940
  • Mfr. Part No. 1115415
Each
MYR279.52
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 271-9697
  • Mfr. Part No. 3VA11123FD420AA0
Each
MYR4,033.39
Temporarily out of stock
SENTRON Terminal for use with 3VA25 Series
  • RS Stock No. 263-780
  • Mfr. Part No. 3VA9604-0QE00
1 Kit
MYR1,450.29
In Stock
SIBA SMD Non Resettable Fuse 2A, 250V
  • RS Stock No. 736-2642
  • Mfr. Part No. 160000.2
Each (In a Bag of 10)
MYR36.661
In Stock
ABB High Performance S800C MCB, 4P, 32A Curve C, 400 V, 415 V AC, 25 kA Breaking Capacity
  • RS Stock No. 225-5969
  • Mfr. Part No. 2CCS884001R0324 S804C C 32A - 25 KA
Each
MYR903.85
In Stock
Eaton 40A Ceramic Cartridge Fuse, 23 x 57mm
  • RS Stock No. 182-1692
  • Mfr. Part No. 40KR85
Each
MYR46.31
Temporarily out of stock
Better World
Schneider Electric Acti 9 iC60H MCB, 63A Curve C, 230V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 776-2477
  • Mfr. Part No. A9F07663
Each
MYR876.45
In Stock
RS PRO 1.6A FF Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 420-088
Each (In a Pack of 10)
MYR8.533
In Stock
Eaton xEffect MCB, 1P, 10A Curve D, 240V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-7037
  • Mfr. Part No. 278580 FAZ-D10/1
Each
MYR189.90
In Stock
RS PRO MCB, 1P, 3A Curve C, 240 → 415V AC, 6 kA Breaking Capacity
  • RS Stock No. 265-0191
Each
MYR48.36
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 2A Curve K, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-7970
  • Mfr. Part No. 2CDS252001R0277 S202-K2
Each
MYR449.77
In Stock
Panasonic SMD Non Resettable Fuse 2A, 32V dc
  • RS Stock No. 759-4751P
  • Mfr. Part No. ERBRD2R00X
Each (Supplied on a Reel)
MYR1.14
Temporarily out of stock
Wurth Elektronik 10A PCB Mount Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 893-0586
  • Mfr. Part No. 696106003002
Each (In a Pack of 10)
MYR2.962
In Stock
Schurter 10A PCB Mount Fuse Holder for 5 x 20mm Fuse, 250V ac
  • RS Stock No. 173-9698
  • Mfr. Part No. 0031.8211
Each (In a Box of 100)
MYR3.245
In Stock
SIBA SMD Non Resettable Fuse 100mA, 250V
  • RS Stock No. 736-2601P
  • Mfr. Part No. 160000.0,1
Each (Supplied on a Reel)
MYR5.803
In Stock
Eaton xEffect MCB, 1P, 6A Curve D, 240 → 415V AC, 48V DC, 10 kA Breaking Capacity
  • RS Stock No. 922-6939
  • Mfr. Part No. 102104 FAZ-D6/1-NA
Each
MYR252.48
1
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