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

2262 / 999+
Schneider Electric, ComPacT MCCB 4P 630A, Fixed Mount
  • RS Stock No. 260-8237
  • Mfr. Part No. C63R42D630
Each
MYR28,072.34
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-4520
  • Mfr. Part No. 3VA2125-0MS32-0AA0
Each
MYR3,597.13
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4683
  • Mfr. Part No. 3VA2140-7MS36-0AA0
Each
MYR3,803.01
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 4 channels
  • RS Stock No. 259-3563
  • Mfr. Part No. 1SDA071541R1
Each
MYR39,772.49
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 4 channels
  • RS Stock No. 259-3639
  • Mfr. Part No. 1SDA071613R1
Each
MYR40,794.76
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3848
  • Mfr. Part No. 3VA2063-6JQ32-0AA0
Each
MYR10,005.23
Siemens Alpha Cover for use with Unequipped Distribution Boards
  • RS Stock No. 216-4801
  • Mfr. Part No. 8GK4501-4KK12
Each
MYR891.75
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Dip LSI, 4 channels
  • RS Stock No. 259-4566
  • Mfr. Part No. 1SDA072813R1
Each
MYR29,080.52
ABB Emax2 Electronic Circuit Breaker 1kA Ekip G Touch LSIG, 3 channels
  • RS Stock No. 259-4172
  • Mfr. Part No. 1SDA072287R1
Each
MYR50,459.02
Better World
ABB System Pro M Compact S200 MCB, 4P, 16A, Type Z
  • RS Stock No. 237-3326
  • Mfr. Part No. 2CDS254001R0468 S204 Z 16A - 10 KA
Each
MYR1,068.14
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4702
  • Mfr. Part No. 3VA2163-0KQ42-0AA0
Each
MYR12,607.69
ABB Emax2 Electronic Circuit Breaker 5kA Ekip G Hi-Touch LSIG, 3 channels
  • RS Stock No. 259-3365
  • Mfr. Part No. 1SDA071280R1
Each
MYR234,360.13
Eaton 4.5A Resettable Fuse, 6V
  • RS Stock No. 225-8281
  • Mfr. Part No. PTSLR12106V450
Each (In a Pack of 10)
MYR2.336
ABB Emax2 Electronic Circuit Breaker 4kA Ekip Hi-Touch LSI, 4 channels
  • RS Stock No. 259-3814
  • Mfr. Part No. 1SDA071829R1
Each
MYR136,508.72
Schurter TA36 Rocker Circuit Breaker - TA36 Single Pole 32 V dc, 277 V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 221-5582
  • Mfr. Part No. 3-128-198
1 Box of 50
MYR1,851.71
ABB Emax2 Electronic Circuit Breaker 3.2kA 1SDA07, 4 channels
  • RS Stock No. 259-3780
  • Mfr. Part No. 1SDA071786R1
Each
MYR98,037.21
Siemens, SENTRON MCCB 4P 800A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 270-4857
  • Mfr. Part No. 3VA2580-7HK42-0AA0
Each
MYR33,894.04
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 4 channels
  • RS Stock No. 259-4516
  • Mfr. Part No. 1SDA072738R1
Each
MYR39,698.78
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3870
  • Mfr. Part No. 3VA2063-7JP32-0AA0
Each
MYR8,712.36
Siemens ALPHA Distribution Board
  • RS Stock No. 272-0266
  • Mfr. Part No. 8GK1051-3KK10
Each
MYR2,668.93
1
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