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

33502 Products showing for Fuses & Circuit Breakers

133 of 999+
Littelfuse SMD Non Resettable Fuse 1A, 63V
  • RS Stock No. 738-3276
  • Mfr. Part No. 0468001.NR
Each (In a Pack of 10)
PHP38.313(exc. VAT)
Better World
Schneider Electric RCBO, 32A Current Rating, 3P+N Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3301
  • Mfr. Part No. A9DK5732
Each
PHP24,581.10(exc. VAT)
Schneider Electric Acti9 Acti9 Moteur MCB, 2P, 1.6A, Type MA, 500V AC, 415 V Breaking Capacity
  • RS Stock No. 458-915
  • Mfr. Part No. A9F90272
Each
PHP30,693.07(exc. VAT)
Eaton Eaton Moeller xEffect Busbar, 24V dc, 17.5mm Pitch
  • RS Stock No. 261-357
  • Mfr. Part No. PXS24BB00012 PXS24-BB/80A/12TE
Each
PHP375.12(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 16 kA, Fixed Mount
  • RS Stock No. 210-3509
  • Mfr. Part No. 3VA1010-2ED32-0AA0
Each
PHP17,783.59(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB, 4P, 40A Curve C, 440V AC, 220 → 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3445
  • Mfr. Part No. A9F54440
Each
PHP11,594.80(exc. VAT)
Schneider Electric ComPacT Shunt Opening Release for use with MasterPact NT/NW, NS3200 Fixed
  • RS Stock No. 207-319
  • Mfr. Part No. 33664
Each
PHP24,287.36(exc. VAT)
nVent ERICO Surge Protector, 65kA, 1500V ac, DIN Rail Mount
  • RS Stock No. 277-6226
  • Mfr. Part No. DT1M27510R
Each
PHP19,631.60(exc. VAT)
ABB Flange for use with Tmax XT
  • RS Stock No. 237-6131
  • Mfr. Part No. 1SDA066649R1
Each
PHP2,612.43(exc. VAT)
ABB Flange for use with Tmax XT
  • RS Stock No. 236-6848
  • Mfr. Part No. 1SDA068652R1
Each
PHP2,689.55(exc. VAT)
ABB Flange for use with Tmax XT
  • RS Stock No. 236-6846
  • Mfr. Part No. 1SDA068647R1
Each
PHP1,631.59(exc. VAT)
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 4P 160A, Breaking Capacity 25kA, Fixed Mount
  • RS Stock No. 260-9760
  • Mfr. Part No. LV516323
Each
PHP69,121.66(exc. VAT)
ABB System Pro M Compact S200 M UC MCB, 4P, 10A Curve B, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 202-989
  • Mfr. Part No. 2CDS274061R0105
Each
PHP47,575.24(exc. VAT)
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA2, 4 channels Type N
  • RS Stock No. 157-374
  • Mfr. Part No. 3VA2225-8HL42-0AA0
Each
PHP196,988.10(exc. VAT)
Better World
Siemens SENTRON Electronic Circuit Breaker 500A 3VA2, 4 channels
  • RS Stock No. 155-897
  • Mfr. Part No. 3VA2450-6HK42-0AA0
Each
PHP289,948.94(exc. VAT)
Better World
Schneider Electric, ComPacT NSX MCCB 3P 40A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 254-6278
  • Mfr. Part No. C10B3TM040
Each
PHP38,025.03(exc. VAT)
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 100 DC
  • RS Stock No. 260-9394
  • Mfr. Part No. C104TM100D
Each
PHP21,534.37(exc. VAT)
Schneider Electric ComPact Auxiliary Contact for use with NS630b to NS3200
  • RS Stock No. 275-6654
  • Mfr. Part No. 33109
Each
PHP6,098.93(exc. VAT)
ABB 100A Centred Tag Fuse, NH000, 500V
  • RS Stock No. 779-9978
  • Mfr. Part No. OFAF000H100 1SCA022627R1550
Each
PHP464.79(exc. VAT)
Better World
Schneider Electric Flexible Elbow Busbar Trunking, 160A, Canalis KN Series
  • RS Stock No. 211-0414
  • Mfr. Part No. KNA160DL4
Each
PHP25,863.76(exc. VAT)
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