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

159 / 999+
Better World
Siemens, SENTRON MCCB 3P 125A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 209-4897
  • Mfr. Part No. 3VA1112-6ED32-0AA0
Each
MYR2,621.91
Schneider Electric Resi9 R9E MCB, 1P, 25A, 230V AC
  • RS Stock No. 357-827
  • Mfr. Part No. R9ETC625
Each
MYR1,978.86
ABB Emax2 Electronic Circuit Breaker 3.2kA 1SDA07, 3 channels
  • RS Stock No. 259-4353
  • Mfr. Part No. 1SDA072522R1
Each
MYR108,537.81
Schneider Electric, PowerPact MCCB 3P 125A, Breaking Capacity 65 kA, Clip-On
  • RS Stock No. 341-154
  • Mfr. Part No. BJL36125LU
Each
MYR11,481.96
Siemens, SENTRON MCCB 4P 175A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 148-031
  • Mfr. Part No. 3VA5217-7GC41-2AA0
Each
MYR12,112.20
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 600A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9795
  • Mfr. Part No. LV563306
Each
MYR8,410.55
ABB Emax2 Electronic Circuit Breaker 1.6kA 1SDA07, 4 channels
  • RS Stock No. 259-3666
  • Mfr. Part No. 1SDA071639R1
Each
MYR64,490.91
Better World
Siemens SENTRON Electronic Circuit Breaker 400A 3VA, 4 channels
  • RS Stock No. 156-737
  • Mfr. Part No. 3VA2340-5HM42-0AA0
Each
MYR16,573.92
Schurter SMD Non Resettable Fuse 12A, 32 V ac, 63V dc
  • RS Stock No. 703-2789
  • Mfr. Part No. 3413.0329.22
Each (In a Bag of 10)
MYR2.632
Schneider Electric, ComPacT MCCB 4P 100A, Fixed Mount
  • RS Stock No. 260-7641
  • Mfr. Part No. C11H4TM100L
Each
MYR4,476.25
Siemens SENTRON 5SJ4 MCB, 2P, 30A Curve C, 400V AC, 60V DC, 14 kA Breaking Capacity
  • RS Stock No. 212-8931
  • Mfr. Part No. 5SJ4230-7HG41
Each
MYR943.12
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-245
  • Mfr. Part No. 3VA6210-7KM31-0AA0
Each
MYR19,228.57
Better World
ABB, XT2N MCCB 4P 40A, Fixed Mount
  • RS Stock No. 236-7463
  • Mfr. Part No. 1SDA067731R1 XT2N 160 TMG 40A FF
Each
MYR2,437.49
ABB Emax2 Electronic Circuit Breaker 1.25kA 1SDA07, 3 channels
  • RS Stock No. 259-4098
  • Mfr. Part No. 1SDA072192R1
Each
MYR29,941.45
Eaton xEffect MCB, 2P, 16A Curve D, 240 → 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 847-3529
  • Mfr. Part No. 278783 FAZ-D16/2
Each
MYR404.15
Eaton 250A Rail Mount Fuse Holder for NH1 Fuse, 1P, 690V ac
  • RS Stock No. 765-2951
  • Mfr. Part No. SD1-D
Each
MYR166.17
Schneider Electric Acti9 SE10 MCB Mini Circuit Breaker, 1P, 25A Curve C, 415V AC, 10000 A Breaking Capacity
  • RS Stock No. 339-672
  • Mfr. Part No. SE10C125
Each
MYR149.31
Siemens Sentron Mounting Adapter for use with Miniature Circuit Breakers
  • RS Stock No. 187-5245
  • Mfr. Part No. 5ST3820-6
Each
MYR55.76
Better World
ABB System Pro M Compact S200 MCB, 1P, 20A Curve C
  • RS Stock No. 231-9662
  • Mfr. Part No. 2CDS251001R0204 S201 C 20A - 10 KA
1 Box of 1
MYR109.18
Eaton RCCB, 40A, 3+N Pole, 300mA, Type B, 415V ac
  • RS Stock No. 183-3554
  • Mfr. Part No. 167905 FRCDM-40/4/03-G/BFQ
Each
MYR6,099.70
1
159
2329
Results per page

Related links