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

2287 / 999+
ABB Tmax Plug In Unit for use with T4
  • RS Stock No. 237-5976
  • Mfr. Part No. 1SDA054744R1 T4 WFP-VR
Each
MYR2,931.09
Eaton xEffect MCB, 2P, 3.5A Curve B
  • RS Stock No. 230-0899
  • Mfr. Part No. 177546 FAZ6-B3,5/2
Each
MYR363.43
Legrand DX3 Circuit Breaker, 1P, 10A, Type Z, 230V AC, 25 kA Breaking Capacity
  • RS Stock No. 266-1345
  • Mfr. Part No. 409901
Each
MYR618.76
Better World
Siemens SENTRON 5SY7 MCB, 3P, 13A Curve B, 400V AC, 72V DC, 5 kA Breaking Capacity
  • RS Stock No. 212-9022
  • Mfr. Part No. 5SY7313-6
Each
MYR618.99
ABB Emax2 Electronic Circuit Breaker 1.25kA Ekip Touch LSIG, 4 channels
  • RS Stock No. 259-3499
  • Mfr. Part No. 1SDA071466R1
Each
MYR37,594.14
ABB Emax2 Electronic Circuit Breaker 2kA Ekip G Touch LSIG, 3 channels
  • RS Stock No. 259-4313
  • Mfr. Part No. 1SDA072457R1
Each
MYR83,447.87
Schneider Electric, ComPacT MCCB 4P 100A, Fixed Mount
  • RS Stock No. 260-8058
  • Mfr. Part No. C25W46E100
Each
MYR26,034.47
ABB Emax2 Electronic Circuit Breaker 4kA Ekip G Touch LSIG, 3 channels
  • RS Stock No. 259-3319
  • Mfr. Part No. 1SDA071227R1
Each
MYR153,142.50
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 3 channels
  • RS Stock No. 259-4231
  • Mfr. Part No. 1SDA072354R1
Each
MYR35,962.41
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4575
  • Mfr. Part No. 3VA2125-7KP36-0AA0
Each
MYR9,342.52
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-3542
  • Mfr. Part No. 3VA2010-5JQ36-0AA0
Each
MYR10,173.86
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 16A, Breaking Capacity 16 kA, DIN Rail Mount
  • RS Stock No. 271-9625
  • Mfr. Part No. 3VA10962ED360AA0
Each
MYR1,653.52
Better World
Siemens, SENTRON MCCB 4P 320A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-3480
  • Mfr. Part No. 3VA1332-5EF42-0AA0
Each
MYR9,308.93
Siemens ALPHA Cover for use with ALPHA 400/630
  • RS Stock No. 213-2408
  • Mfr. Part No. 8GK4501-2KK12
Each
MYR364.27
ABB Emax2 Electronic Circuit Breaker 3.2kA 1SDA07, 4 channels
  • RS Stock No. 259-3770
  • Mfr. Part No. 1SDA071777R1
Each
MYR101,382.64
ABB Emax2 Electronic Circuit Breaker 630A Ekip Dip LI, 4 channels
  • RS Stock No. 259-3417
  • Mfr. Part No. 1SDA071351R1
Each
MYR31,567.67
ABB Emax2 Electronic Circuit Breaker 5kA 1SDA07, 4 / f channels
  • RS Stock No. 259-3944
  • Mfr. Part No. 1SDA071988R1
Each
MYR224,695.78
Siemens, SENTRON MCCB 3P 800A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 270-4847
  • Mfr. Part No. 3VA2580-5MQ32-0AA0
Each
MYR28,216.97
ABB Emax2 Electronic Circuit Breaker 800A 1SDA07, 4 channels
  • RS Stock No. 259-4619
  • Mfr. Part No. 1SDA072888R1
Each
MYR56,220.35
Siemens 6A Cartridge Fuse
  • RS Stock No. 210-7005
  • Mfr. Part No. 3NW6601-4
Each (In a Pack of 10)
MYR139.576
1
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