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

2285 / 999+
Schneider Electric, ComPacT MCCB 4P 80A, Fixed Mount
  • RS Stock No. 260-7639
  • Mfr. Part No. C11H4TM080L
Each
MYR4,469.78
ABB Emax2 Electronic Circuit Breaker 1.6kA Ekip Dip LSI, 3 channels
  • RS Stock No. 259-4213
  • Mfr. Part No. 1SDA072333R1
Each
MYR35,312.03
Siemens 80A Centred Tag Fuse, NH1, 690V
  • RS Stock No. 230-2949
  • Mfr. Part No. 3NA6124-6
Each (In a Pack of 3)
MYR362.51
Socomec 400 Centred Tag Fuse, S2
  • RS Stock No. 223-2868
  • Mfr. Part No. 68730400
Each (In a Pack of 3)
MYR174.51
Better World
Siemens SENTRON 5SY7 MCB, 1+N, 4A Curve C, 230V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 209-6714
  • Mfr. Part No. 5SY7504-7
Each
MYR471.64
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4685
  • Mfr. Part No. 3VA2163-0HL36-0AA0
Each
MYR5,388.97
Better World
Eaton 250A Tag Fuse, 217 x 82 x 94mm, 1kV, 167mm
  • RS Stock No. 282-6230
  • Mfr. Part No. PV-250A-2XL-3B
Each
MYR2,301.71
Siemens, SENTRON MCCB 3P 250A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 271-9489
  • Mfr. Part No. 3VA1325-6MH32-0DG0
Each
MYR9,368.06
Siemens SENTRON Wire Connector for use with 3VA1 250
  • RS Stock No. 269-7122
  • Mfr. Part No. 3VA9214-0JC22
Each (In a Pack of 4)
MYR184.385
ABB Emax2 Electronic Circuit Breaker 4kA 1SDA07, 3 channels
  • RS Stock No. 259-3311
  • Mfr. Part No. 1SDA071219R1
Each
MYR132,698.69
Siemens SENTRON 5SP3716 MCB, 1P, 16A, Type E
  • RS Stock No. 231-8329
  • Mfr. Part No. 5SP3716-2KK02
Each
MYR613.47
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4102
  • Mfr. Part No. 3VA2116-7JP42-0AA0
Each
MYR12,260.52
Better World
Siemens RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity, Sentron Range
  • RS Stock No. 225-8771
  • Mfr. Part No. 5SU1356-7GV16
Each (In a Pack of 36)
MYR821.338
Wickmann 0.75A Resettable Fuse, 13.2V dc
  • RS Stock No. 174-0363
  • Mfr. Part No. 1812L075PR
1 Reel of 2000
MYR2,890.80
ABB Emax2 Electronic Circuit Breaker 4kA Ekip Hi-Touch LSI, 4 / f channels
  • RS Stock No. 259-3932
  • Mfr. Part No. 1SDA071968R1
Each
MYR216,661.81
ABB Emax2 Electronic Circuit Breaker 1.6kA Ekip Hi-Touch LSI, 4 channels
  • RS Stock No. 259-4720
  • Mfr. Part No. 1SDA072998R1
Each
MYR68,951.39
Legrand DX3 Circuit Breaker, 2P, 2A Curve C, 400V AC, 25 kA Breaking Capacity
  • RS Stock No. 266-1342
  • Mfr. Part No. 409765
Each
MYR1,346.95
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 4 channels
  • RS Stock No. 259-3539
  • Mfr. Part No. 1SDA071518R1
Each
MYR56,630.46
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 4 channels
  • RS Stock No. 259-3672
  • Mfr. Part No. 1SDA071646R1
Each
MYR50,459.02
ABB Emax2 Electronic Circuit Breaker 2.5kA 1SDA07, 3 channels
  • RS Stock No. 259-4294
  • Mfr. Part No. 1SDA072428R1
Each
MYR81,217.63
1
2285
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