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
Fuses - PCB
Fuses - PCB

33502 Products showing for Fuses & Circuit Breakers

217 of 999+
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3910
  • Mfr. Part No. 3VA2063-8KP36-0AA0
Each
PHP130,173.37(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4665
  • Mfr. Part No. 3VA2140-7JQ36-0AA0
Each
PHP128,424.98(exc. VAT)
Better World
Siemens SENTRON Electronic Circuit Breaker 160A 3VA2, 4 channels
  • RS Stock No. 157-364
  • Mfr. Part No. 3VA2216-8JP42-0AA0
Each
PHP261,913.27(exc. VAT)
Schneider Electric, PowerPact MCCB 4P 35A, Breaking Capacity 65 kA, Clip-On
  • RS Stock No. 428-856
  • Mfr. Part No. BJF46035
Each
PHP114,997.68(exc. VAT)
ABB Cover for use with ABB Tmax XT1
  • RS Stock No. 831-9208
  • Mfr. Part No. 1SDA066655R1 LTC XT1 3p TERMINAL COVERS LOW 2pcs
Each (In a Pack of 2)
PHP1,276.285(exc. VAT)
Mersen Surge Protector
  • RS Stock No. 179-3070
  • Mfr. Part No. 83230137 / STPT23-20K275V-4P-LFM
Each
PHP13,877.76(exc. VAT)
ABB Tmax Auxiliary Contact for use with Tmax T
  • RS Stock No. 237-5985
  • Mfr. Part No. 1SDA054919R1 AUP-R T4-T5 400V AC/DC
Each
PHP1,141.03(exc. VAT)
ABB Plastic Consumer Unit, IP41 1SLM004100A
  • RS Stock No. 286-4967
  • Mfr. Part No. 1SLM004100A1908
Each
PHP2,515.75(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 55 kA
  • RS Stock No. 209-6908
  • Mfr. Part No. 3VA2110-5MN32-0AA0
Each
PHP40,709.46(exc. VAT)
Schneider Electric, PowerPact MCCB 3P 225A, Breaking Capacity 18 kA, DIN Rail Mount
  • RS Stock No. 346-695
  • Mfr. Part No. NJJL36225
Each
PHP337,331.31(exc. VAT)
Schneider Electric, PowerPact MCCB 3P 60A, Breaking Capacity 18 kA, Clip-On
  • RS Stock No. 341-565
  • Mfr. Part No. BDF36060
Each
PHP50,625.58(exc. VAT)
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA2, 3 channels Type N
  • RS Stock No. 157-173
  • Mfr. Part No. 3VA2225-7HL32-0AA0
Each
PHP128,374.30(exc. VAT)
Better World
Siemens RCBO, 125A Current Rating, 2P Poles, 300mA Trip Sensitivity, Type B, Sentron Range
  • RS Stock No. 243-6226
  • Mfr. Part No. 5SU1624-6KK82
Each
PHP62,997.11(exc. VAT)
Schneider Electric Linergy Busbar Connector, 690V
  • RS Stock No. 654-899
  • Mfr. Part No. LVS04412
Each
PHP61,015.25(exc. VAT)
Mersen 40A Bolted Tag Fuse, A3, 460 V dc, 690V ac, 73mm
  • RS Stock No. 178-1111
  • Mfr. Part No. P1006585 / BTIS69V40
Each (In a Pack of 10)
PHP1,006.849(exc. VAT)
ABB Shunt Trip Shunt trip for use with S200U, S200UP
  • RS Stock No. 203-766
  • Mfr. Part No. 2CDS200908R0002
Each
PHP13,014.74(exc. VAT)
ABB Tmax T Motor Operator for use with Circuit Breaker
  • RS Stock No. 232-0151
  • Mfr. Part No. 1SDA062116R1 T7M-X1 220-250V AC/DC
Each
PHP64,474.34(exc. VAT)
ABB System Pro M Compact S200 MCB, 2P, 4A Curve B, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 204-258
  • Mfr. Part No. 2CDS252001R0045
Each
PHP15,252.38(exc. VAT)
Eaton 12A British Standard Fuse, CT, 690 V ac, 500V dc, 64.3mm
  • RS Stock No. 156-8894
  • Mfr. Part No. 12CT
Each (In a Pack of 5)
PHP603.596(exc. VAT)
Siemens SENTRON 5SJ4140 MCB, 1P, 40A Curve D, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 300-024
  • Mfr. Part No. 5SJ4140-8HG40
Each
PHP5,146.43(exc. VAT)
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