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

33493 Products showing for Fuses & Circuit Breakers

110 of 999+
Siemens SENTRON 1 Phase Busbar, 230V, 18mm Pitch
  • RS Stock No. 187-5238
  • Mfr. Part No. 5ST3786-0
Each
PHP6,783.17(exc. VAT)
Eaton IZMX/INX Electronic Circuit Breaker 1.6kA , DIN Rail
  • RS Stock No. 127-553
  • Mfr. Part No. 183478 IZMX16N3-P16W-1
Each
PHP842,912.10(exc. VAT)
Better World
Schneider Electric Compact Nsx, Easypact Cvs Cable Connector for use with 1 Cable 35 mm2 →300 mm2
  • RS Stock No. 221-1227
  • Mfr. Part No. LV432479
Each
PHP10,999.26(exc. VAT)
Schneider Electric, ComPacT MCCB 4P 250A, Breaking Capacity 15 kA, Fixed Mount
  • RS Stock No. 429-406
  • Mfr. Part No. C25F6TM250
Each
PHP212,894.12(exc. VAT)
Siemens SENTRON Terminal for use with 3VA1 400/630 and 3VA2 400/630
  • RS Stock No. 210-9390
  • Mfr. Part No. 3VA9403-0QE00
Each
PHP9,358.71(exc. VAT)
Better World
Siemens RCBO, 13A Current Rating, 2P Poles, 10mA Trip Sensitivity, SENTRON Range
  • RS Stock No. 211-9595
  • Mfr. Part No. 5SU1154-6KK13
Each
PHP11,894.17(exc. VAT)
Better World
Schneider Electric Acti9 iIG40K RCCB, 40A, 3+N Pole, 300mA, Type AC, 380 → 415V ac
  • RS Stock No. 238-3478
  • Mfr. Part No. A9R79740
Each
PHP25,180.03(exc. VAT)
Better World
Schneider Electric Mounting Plate for use with AK5 Series
  • RS Stock No. 608-6808
  • Mfr. Part No. AK5PA232
Each
PHP4,177.80(exc. VAT)
Schneider Electric RCBO, 6A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 339-384
  • Mfr. Part No. SEE106C03
Each
PHP11,529.24(exc. VAT)
Schneider Electric Acti9 Acti9 Moteur MCB, 3P, 1.6A, Type MA, 500V AC, 415 V Breaking Capacity
  • RS Stock No. 479-616
  • Mfr. Part No. A9F90372
Each
PHP36,325.06(exc. VAT)
Siemens SENTRON Connection Unit for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 265-521
  • Mfr. Part No. 3VW9011-0AL78
Each
PHP20,087.19(exc. VAT)
Better World
Siemens SENTRON Electronic Circuit Breaker 160A 3VA2, 3 channels
  • RS Stock No. 157-332
  • Mfr. Part No. 3VA2216-6HM32-0AA0
Each
PHP142,392.27(exc. VAT)
Schneider Electric, ComPacT NSX MCCB 4P 160A, Fixed Mount
  • RS Stock No. 254-6346
  • Mfr. Part No. C16F4
Each
PHP41,872.68(exc. VAT)
Leitungsschutzschalter Resi9 1P, 25A, C
  • RS Stock No. 537-867
  • Mfr. Part No. R9F24125
Each
PHP1,902.83(exc. VAT)
Better World
Siemens Sentron 5SY6 MCB, 1P, 1A Curve C, 230V AC, 72V DC, 6 kA Breaking Capacity
  • RS Stock No. 521-4917
  • Mfr. Part No. 5SY6101-7
Each
PHP3,366.04(exc. VAT)
Schneider Electric, ComPacT New Generation MCCB 3P 25A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 245-130
  • Mfr. Part No. C11H34V025L
Each
PHP164,937.05(exc. VAT)
Schneider Electric EasyPact Electronic Circuit Breaker 25A, Plug In
  • RS Stock No. 122-338
  • Mfr. Part No. LV510301P
Each
PHP7,303.35(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 20A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 874-4234
  • Mfr. Part No. 3VA1120-4ED36-0AA0
Each
PHP23,853.99(exc. VAT)
Schneider Electric, ComPacT MCCB 4P 100A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 429-193
  • Mfr. Part No. C16N6TM100
Each
PHP131,774.88(exc. VAT)
Littelfuse Non-Resettable Wire Ended Fuse 5A, 125V ac
  • RS Stock No. 738-2999P
  • Mfr. Part No. 0471005.NRT1L
Each (Supplied in a Bag)
PHP71.775(exc. VAT)
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