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

81 / 999+
Temporarily out of stock
Better World
ABB System Pro M Compact S200 MCB, 1P, 8A Curve K, 230V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 746-7955
  • Mfr. Part No. 2CDS251001R0407 S201-K8
Each
MYR189.77
Temporarily out of stock
Better World
Siemens SENTRON 5SY4 MCB, 1P, 4A, Type A, 10 kA Breaking Capacity
  • RS Stock No. 202-7061
  • Mfr. Part No. 5SY4104-5
Each
MYR279.22
In Stock
Lovato ModuLo P1MB MCB, 4P, 32A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 825-5977
  • Mfr. Part No. P1MB4PC32
Each
MYR646.32
In Stock
Better World
ABB System Pro M Compact S200 MCB, 2P, 4A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 746-7703
  • Mfr. Part No. 2CDS252001R0044 S202-C4
Each
MYR303.46
In Stock
Siemens SENTRON Busbar, 60mm Pitch
  • RS Stock No. 196-3719
  • Mfr. Part No. 8US19222UA01
Each
MYR764.13
In Stock
Schurter 10A Panel Mount Fuse Holder for 5 x 20mm Fuse, 2P, 250V ac
  • RS Stock No. 173-5638
  • Mfr. Part No. 4301.1401
Each (In a Bag of 50)
MYR19.171
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
In Stock
Better World
Schneider Electric TeSys Thermal Circuit Breaker - GV3P 3 Pole 690V ac Voltage Rating DIN Rail Mount, 80A Current Rating
  • RS Stock No. 188-4740
  • Mfr. Part No. GV3P80
Each
MYR1,308.54
In Stock
Socomec 12A F Cartridge Fuse, 10 x 38mm
  • RS Stock No. 223-2785
  • Mfr. Part No. 60120012
Each (In a Pack of 10)
MYR5.86
In Stock
ABB S202M Circuit Breaker, 2P, 4A Curve K, 440V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 287-6363
  • Mfr. Part No. 2CDS272061R0337
Each
MYR719.94
In Stock
Socomec 2A F Cartridge Fuse, 14 x 51mm
  • RS Stock No. 223-2823
  • Mfr. Part No. 60530002
Each (In a Pack of 10)
MYR37.358
In Stock
ABB, Tmax XT MCCB 4P 125A, Fixed Mount
  • RS Stock No. 236-7280
  • Mfr. Part No. 1SDA067409R1 XT1C 160 TMD 125A FF
Each
MYR2,788.25
Temporarily out of stock
Better World
Schneider Electric Acti 9 iC60N MCB, 3P, 50A Curve C, 440V AC, 180V DC, 6 kA Breaking Capacity
  • RS Stock No. 776-3509
  • Mfr. Part No. A9F77350
Each
MYR1,801.28
In Stock
Legrand 10A F Ceramic Cartridge Fuse, 5 x 20mm
  • RS Stock No. 266-3070
  • Mfr. Part No. 0 102 96
1 Box of 10
MYR86.86
In Stock
Mersen 32A Slow-Blow Ceramic Cartridge Fuse, 13 x 29mm
  • RS Stock No. 209-6431
  • Mfr. Part No. C1036980 / BMD42V32
Each (In a Pack of 10)
MYR31.674
Temporarily out of stock
ABB, Tmax XT MCCB 3P 40A, Fixed Mount
  • RS Stock No. 236-7281
  • Mfr. Part No. 1SDA067412R1 XT1N 160 TMD 40A FF
Each
MYR1,526.32
In Stock
Osram Surge Protector, 15A, 20kV, Screw Mount Mount
  • RS Stock No. 251-5285
  • Mfr. Part No. SPD-20-275-G2
Each
MYR83.31
In Stock
ABB 36 Way Plastic Consumer Unit, 125A, IP65 Mistral65
  • RS Stock No. 811-1909
  • Mfr. Part No. 1SL1205A00 65P18X22
Each
MYR329.65
Temporarily out of stock
ABB F200 RCCB, 40A, 4 Pole, 100mA, Type A, 230V ac
  • RS Stock No. 225-6129
  • Mfr. Part No. 2CSF204101R2400 F204 A-40/0,1
Each
MYR789.65
Temporarily out of stock
Siemens 24V dc Remote Control Circuit Trip
  • RS Stock No. 223-7645
  • Mfr. Part No. 5TT4452-5
Each
MYR667.65
1
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