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

46166 Products showing for Fuses & Circuit Breakers

2247 / 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 16A, Breaking Capacity 25 kA
  • RS Stock No. 209-6745
  • Mfr. Part No. 3VA1096-3ED32-0AA0
Each
MYR1,687.69
Temporarily out of stock
Wickmann 1.1A Resettable Fuse, 72 V ac, 72V dc
  • RS Stock No. 174-0428
  • Mfr. Part No. RF2623-000
1 Box of 10000
MYR15,959.73
Temporarily out of stock
Siemens SENTRON Cover for use with 3VA1 100/160
  • RS Stock No. 210-9301
  • Mfr. Part No. 3VA9154-0KB03
Each
MYR165.67
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4699
  • Mfr. Part No. 3VA2163-0KP46-0AA0
Each
MYR11,755.60
Temporarily out of stock
Siemens SENTRON 5SP3835 MCB, 3P, 35A, Type E
  • RS Stock No. 231-8365
  • Mfr. Part No. 5SP3835-3
Each
MYR2,347.45
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 6.3kA 1SDA07, 3 channels
  • RS Stock No. 259-4444
  • Mfr. Part No. 1SDA072643R1
Each
MYR235,660.98
Temporarily out of stock
Schurter TA36 Rocker Circuit Breaker - TA36 2 Pole 60 V dc, 277 V ac Voltage Rating, 5A Current Rating
  • RS Stock No. 221-5615
  • Mfr. Part No. 3-128-221
1 Box of 10
MYR650.72
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 400A, Fixed Mount
  • RS Stock No. 260-8113
  • Mfr. Part No. C40H34V400
Each
MYR36,484.84
Temporarily out of stock
Siemens Surge Protector, Plug In Mount
  • RS Stock No. 213-1323
  • Mfr. Part No. 5SD7428-1
Each
MYR434.69
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4082
  • Mfr. Part No. 3VA2116-6KQ32-0AA0
Each
MYR12,260.52
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4650
  • Mfr. Part No. 3VA2140-7HL42-0AA0
Each
MYR5,432.32
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3893
  • Mfr. Part No. 3VA2063-8HM42-0AA0
Each
MYR7,785.94
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3887
  • Mfr. Part No. 3VA2063-8HL32-0AA0
Each
MYR4,789.59
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 160A, Fixed Mount
  • RS Stock No. 260-7875
  • Mfr. Part No. C25B4TM160
Each
MYR9,374.40
In Stock
Bourns Surface Mount Fuse 8A, 48V dc
  • RS Stock No. 245-9234
  • Mfr. Part No. SF-1206F800M-2
Each (On a Tape of 10)
MYR3.465
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA Ekip G Touch LSIG, 4 channels
  • RS Stock No. 259-3482
  • Mfr. Part No. 1SDA071437R1
Each
MYR55,386.96
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3913
  • Mfr. Part No. 3VA2063-8KQ32-0AA0
Each
MYR12,877.34
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3752
  • Mfr. Part No. 3VA2040-6JQ32-0AA0
Each
MYR10,005.23
Temporarily out of stock
ABB RCBO, 6A Current Rating, 4P Poles, Type K
  • RS Stock No. 237-5110
  • Mfr. Part No. 2CSR254101R1067
Each
MYR3,462.33
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-3736
  • Mfr. Part No. 3VA2040-5JQ46-0AA0
Each
MYR11,016.94
1
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