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

46579 Products showing for Fuses & Circuit Breakers

102 / 999+
Better World
Schneider Electric Multi 9 C60SP MCB, 2P, 2A Curve D, 440V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 211-2392
  • Mfr. Part No. M9F23202
Each
MYR475.96
Littelfuse 10A Red Blade Car Fuse, 32V dc
  • RS Stock No. 787-4101P
  • Mfr. Part No. 0287010.PXCN
Each (Supplied in a Bag)
MYR1.589
ABB MCCB 4P 250A, Breaking Capacity 65 kA
  • RS Stock No. 192-0835
  • Mfr. Part No. 1SDA068147R1
Each
MYR6,891.72
Eaton xEffect MCB, 1P, 6A Curve S, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 532-5051
  • Mfr. Part No. 278610 FAZ-S6/1
Each
MYR166.05
Littelfuse 15A PCB Mount Fuse Holder, 32V dc
  • RS Stock No. 360-7317
  • Mfr. Part No. 01530008Z
Each (In a Pack of 5)
MYR14.886
Eaton 1A F Melamine Cartridge Fuse, 10 x 38mm
  • RS Stock No. 848-3908
  • Mfr. Part No. KTK-R-1
Each
MYR215.85
Siemens Cover for use with 5SH5 5 MCB, 5ST3 7 MCB
  • RS Stock No. 521-5061
  • Mfr. Part No. 5ST3748
Each
MYR6.70
Contactum MCB, 1P, 6A Curve B, 250V AC, 6 kA Breaking Capacity
  • RS Stock No. 184-9021
  • Mfr. Part No. CPB06
Each
MYR21.38
ABB 2 Phase Industrial Surge Protector, 100kA, 1.4kV, DIN Rail Mount
  • RS Stock No. 237-6640
  • Mfr. Part No. 2CTB803972R1200
Each
MYR1,036.64
Better World
Schneider Electric Acti 9 C60H-DC MCB, 2P, 4A Curve C, 500V DC, 20 kA Breaking Capacity
  • RS Stock No. 776-3203
  • Mfr. Part No. A9N61524
Each
MYR696.57
Better World
Schneider Electric, PowerPact MCCB Molded Case Circuit Breaker 3P 50A
  • RS Stock No. 221-0896
  • Mfr. Part No. BDL36050LU
Each
MYR3,280.52
ABB Tmax XT Rotary Handle for use with SACE Tmax XT
  • RS Stock No. 236-6856
  • Mfr. Part No. 1SDA069057R1 RHE_B XT2-XT4 F/P BASE RH
Each
MYR367.70
Europa 3 Phase Distribution Board, 12 Way, 125 A
  • RS Stock No. 849-6406
  • Mfr. Part No. TPN04
Each
MYR1,488.89
Sensata Airpax Airpax Thermal Circuit Breaker - IEG6 Single Pole Panel Mount, 45A Current Rating
  • RS Stock No. 275-0200
  • Mfr. Part No. IEG6-1-51-45.0-A-01-V
1 Box of 5
MYR1,361.79
Better World
Schneider Electric ID RCCB, 25A, 2 Pole, 30mA, Type AC, 240V ac
  • RS Stock No. 214-2095
  • Mfr. Part No. M9R11225
Each
MYR850.04
Eaton Bussmann Series PC Board Non Resettable Fuse, Radial 500mA, 250V ac
  • RS Stock No. 169-9504
  • Mfr. Part No. SR-5-500MA-BK
Each (In a Bag of 200)
MYR6.128
RS PRO Industrial Surge Protector, 10kA, 30 V, DIN Rail Mount
  • RS Stock No. 101-761
Each
MYR465.34
SIBA 3.15A M Ceramic Cartridge Fuse, 5 x 25mm
  • RS Stock No. 267-3521
  • Mfr. Part No. 70-010-05/3.15A
Each (In a Pack of 5)
MYR20.27
Mersen 6A Slow-Blow Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 247-2951
  • Mfr. Part No. Y084799
1 Box of 10
MYR1,317.30
Eaton 100A British Standard Fuse, FEE, 690 V, 700 V, 71mm
  • RS Stock No. 156-9005
  • Mfr. Part No. 100FEE
Each
MYR716.21
1
102
2329
Results per page

Related links