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

2241 / 999+
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 6.3kA Ekip Hi-Touch LSI, 3 channels
  • RS Stock No. 259-3386
  • Mfr. Part No. 1SDA071309R1
Each
MYR290,487.47
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4076
  • Mfr. Part No. 3VA2116-6JP36-0AA0
Each
MYR9,989.76
Temporarily out of stock
Better World
Siemens SENTRON Fire Safety Circuit Breaker, 1+N, 25A Curve B, 230V AC
  • RS Stock No. 238-3207
  • Mfr. Part No. 5SV6016-6MC25
Each
MYR1,788.95
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 271-9676
  • Mfr. Part No. 3VA11105GD420AA0
Each
MYR3,491.71
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 16A, Fixed Mount
  • RS Stock No. 260-7627
  • Mfr. Part No. C11H4TM016L
Each
MYR3,877.76
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 2.5kA Ekip Dip LSI, 3 channels
  • RS Stock No. 259-3214
  • Mfr. Part No. 1SDA071083R1
Each
MYR66,163.43
In Stock
Schurter PC Board Non Resettable Fuse, Radial 800mA, 250V ac
  • RS Stock No. 284-5091
  • Mfr. Part No. 0034.6013
Each (In a Pack of 10)
MYR3.037
In Stock
Schneider Electric, ComPacT New Generation MCCB 3P 160A, Fixed Mount
  • RS Stock No. 260-7772
  • Mfr. Part No. C16H32D160
Each
MYR7,823.19
Temporarily out of stock
Siemens, SENTRON MCCB 4P 1kA, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 270-4785
  • Mfr. Part No. 3VA2510-6JP42-0AA0
Each
MYR43,674.46
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 800A Ekip Dip LSI, 3 channels
  • RS Stock No. 259-4140
  • Mfr. Part No. 1SDA072253R1
Each
MYR35,405.02
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4681
  • Mfr. Part No. 3VA2140-7MQ36-0AA0
Each
MYR9,180.48
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 400A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-3491
  • Mfr. Part No. 3VA1340-5FF42-0AA0
Each
MYR12,647.08
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 250A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 211-3800
  • Mfr. Part No. 3VA2325-5HN42-0AA0
Each
MYR10,687.70
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 209-4904
  • Mfr. Part No. 3VA1112-6EE46-0AA0
Each
MYR4,408.96
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Touch LSI, 4 channels
  • RS Stock No. 259-4575
  • Mfr. Part No. 1SDA072825R1
Each
MYR37,402.96
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 160 DC
  • RS Stock No. 260-7729
  • Mfr. Part No. C164TM125D
Each
MYR1,494.17
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 209-5183
  • Mfr. Part No. 3VA2216-5HN32-0AA0
Each
MYR6,559.70
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3670
  • Mfr. Part No. 3VA2025-7HM42-0AA0
Each
MYR8,600.02
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 25A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 271-9579
  • Mfr. Part No. 3VA10254ED460AA0
Each
MYR2,393.49
Temporarily out of stock
MCCB 3P 250A, Breaking Capacity 8 kV
  • RS Stock No. 658-408
  • Mfr. Part No. 1SDA054233R1
Each
MYR13,934.68
1
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