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

2246 / 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 271-9666
  • Mfr. Part No. 3VA11104GE460AA0
Each
MYR3,106.39
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 1kA Ekip Touch LSIG, 4 channels
  • RS Stock No. 259-3600
  • Mfr. Part No. 1SDA071576R1
Each
MYR46,463.08
In Stock
Bourns Surface Mount Fuse 1.5A, 50 V dc, 63 V dc
  • RS Stock No. 245-9199P
  • Mfr. Part No. SF-0603SPA150R-2
Each (Supplied on a Reel)
MYR5.52
Temporarily out of stock
Better World
ABB Emax2 Electronic Circuit Breaker 1.6kA Ekip Dip LI, 3 channels
  • RS Stock No. 259-3137
  • Mfr. Part No. 1SDA070991R1
Each
MYR28,900.11
Temporarily out of stock
Better World
Siemens 5SV3344 RCCB, 40A, 4 Pole, 30mA, Type A, 400V ac
  • RS Stock No. 231-8379
  • Mfr. Part No. 5SV3344-6GV01
Each (In a Pack of 18)
MYR718.433
Temporarily out of stock
Better World
Eaton 350A Tag Fuse, 217 x 82 x 94mm, 1kV, 170mm
  • RS Stock No. 282-6238
  • Mfr. Part No. PV-350A-3L-B
Each
MYR4,152.83
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4012
  • Mfr. Part No. 3VA2110-7MS32-0AA0
Each
MYR3,454.42
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 20A, Breaking Capacity 55 kA, DIN Rail Mount
  • RS Stock No. 271-9832
  • Mfr. Part No. 3VA1120-5GE42-0AA0
Each
MYR2,490.28
Temporarily out of stock
Schurter SMD Non Resettable Fuse 2A, 125V ac/dc
  • RS Stock No. 173-7870
  • Mfr. Part No. 3410.0035.01
Each (In a Bag of 100)
MYR12.568
Being discontinued
Eaton 15A Ceramic Cartridge Fuse, 23 x 57mm
  • RS Stock No. 181-8511
  • Mfr. Part No. 15KR85
1 Box of 20
MYR789.53
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 160A, Fixed Mount
  • RS Stock No. 260-7690
  • Mfr. Part No. C12F3TM160B
Each
MYR4,672.61
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 2.5kA Ekip Dip LSI, 4 channels
  • RS Stock No. 259-3727
  • Mfr. Part No. 1SDA071703R1
Each
MYR76,664.29
In Stock
Eaton 3.5A Resettable Fuse, 6V
  • RS Stock No. 225-8274
  • Mfr. Part No. PTSLR12106V350
1 Reel of 3000
MYR5,256.90
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 271-9743
  • Mfr. Part No. 3VA1112-6FF42-0AA0
Each
MYR6,569.06
Temporarily out of stock
Siemens Single Phase Industrial Surge Protection, 2A, 230V (Volts), DIN Rail Mount
  • RS Stock No. 266-9582
  • Mfr. Part No. 5SY1705-4
Each
MYR188.94
Temporarily out of stock
ABB Front Terminal for use with S6, T6
  • RS Stock No. 250-4517
  • Mfr. Part No. 1SDA050689R1
Each
MYR6,567.38
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 40A, Fixed Mount
  • RS Stock No. 260-7604
  • Mfr. Part No. C11F4TM040B
Each
MYR2,922.22
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 3P 160A, Fixed Mount
  • RS Stock No. 260-7737
  • Mfr. Part No. C16B34V160
Each
MYR13,435.88
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4696
  • Mfr. Part No. 3VA2163-0KP32-0AA0
Each
MYR9,867.55
Temporarily out of stock
ABB Emax2 Electronic Circuit Breaker 630A Ekip Touch LSI, 4 channels
  • RS Stock No. 259-4485
  • Mfr. Part No. 1SDA072695R1
Each
MYR21,427.81
1
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