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

2290 / 999+
ABB Emax2 Electronic Circuit Breaker 250A 1SDA07, 3 channels
  • RS Stock No. 259-3983
  • Mfr. Part No. 1SDA072045R1
Each
MYR28,697.80
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 32A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 271-9891
  • Mfr. Part No. 3VA1132-4GD46-0AA0
Each
MYR2,450.18
Eaton xEffect MCB, 4P, 13A Curve C
  • RS Stock No. 230-0959
  • Mfr. Part No. 239211 FAZ6-C13/4
Each
MYR403.25
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4746
  • Mfr. Part No. 3VA2163-7HN42-0AA0
Each
MYR5,889.41
Eaton 30A Panel Mount Fuse Holder for 6.3 x 32mm Fuse, 480V
  • RS Stock No. 225-8215
  • Mfr. Part No. BK-HVP-CC-R
Each (In a Pack of 5)
MYR40.792
Eaton 5A Resettable Fuse, 6V
  • RS Stock No. 225-8264
  • Mfr. Part No. PTSLR12066V500
Each (In a Pack of 10)
MYR2.987
Siemens SENTRON Wire Connector for use with 3VA9603-0KP00
  • RS Stock No. 269-7223
  • Mfr. Part No. 3VA9603-0JJ45
Each (In a Pack of 4)
MYR556.148
Better World
Siemens, SENTRON MCCB 4P 50A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 271-9349
  • Mfr. Part No. 3VA1150-3GE42-0AA0
Each
MYR2,243.50
ABB Emax2 Electronic Circuit Breaker 2kA 1SDA07, 3 channels
  • RS Stock No. 259-4263
  • Mfr. Part No. 1SDA072391R1
Each
MYR46,556.00
ABB Emax2 Electronic Circuit Breaker 800A Ekip Hi-Touch LSI, 4 channels
  • RS Stock No. 259-3457
  • Mfr. Part No. 1SDA071399R1
Each
MYR55,960.78
ABB Emax2 Electronic Circuit Breaker 1.25kA 1SDA07, 4 channels
  • RS Stock No. 259-4580
  • Mfr. Part No. 1SDA072829R1
Each
MYR56,630.46
ABB RCBO, 40A Current Rating, 2P Poles, Type B
  • RS Stock No. 237-5141
  • Mfr. Part No. 2CSR272001R1405
Each
MYR1,282.52
Schneider Electric, ComPacT MCCB 3P 220A, Fixed Mount
  • RS Stock No. 260-8034
  • Mfr. Part No. C25W32M220
Each
MYR15,914.87
Better World
Siemens SENTRON 5SY MCB, 1P, 63A, Type A
  • RS Stock No. 232-2287
  • Mfr. Part No. 5SY4163-5
Each
MYR492.93
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4692
  • Mfr. Part No. 3VA2163-0HN32-0AA0
Each
MYR5,624.99
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 4 channels
  • RS Stock No. 259-4593
  • Mfr. Part No. 1SDA072851R1
Each
MYR29,558.75
Better World
Siemens SENTRON 5SL6 MCB, 3+N, 13A Curve C, 400V AC, 72V DC
  • RS Stock No. 212-8938
  • Mfr. Part No. 5SL6413-7
Each
MYR695.28
Better World
Siemens SENTRON 5SL4 MCB, 3+N, 25A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 209-6550
  • Mfr. Part No. 5SL4625-8
Each
MYR910.51
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4001
  • Mfr. Part No. 3VA2110-7KQ32-0AA0
Each
MYR10,441.79
Schurter TA36 Rocker Circuit Breaker - TA36 Single Pole 32 V dc, 277 V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 221-5580
  • Mfr. Part No. 3-128-197
1 Box of 50
MYR2,272.31
1
2290
2329
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