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

115 of 999+
Temporarily out of stock
RS PRO PC Board Non Resettable Fuse, Radial 100mA, 250V
  • RS Stock No. 767-5074
Each (In a Pack of 10)
PHP47.653(exc. VAT)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 3P 320A, Fixed Mount
  • RS Stock No. 250-4068
  • Mfr. Part No. 1SDA054334R1
Each
PHP157,187.09(exc. VAT)
Temporarily out of stock
Siemens SENTRON Terminal for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 266-694
  • Mfr. Part No. 3VW9011-0AL72
1 Kit
PHP31,230.44(exc. VAT)
Temporarily out of stock
Wickmann 0.3A Resettable Fuse, 60V dc
  • RS Stock No. 174-0463
  • Mfr. Part No. RF0323-000
1 Reel of 20000
PHP433,295.55(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 271-9554
  • Mfr. Part No. 3VA10103ED360AA0
Each
PHP29,224.48(exc. VAT)
Temporarily out of stock
Siemens Sentron Contactor Interface Module
  • RS Stock No. 196-3600
  • Mfr. Part No. 5SM23320
Each
PHP8,294.89(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 160A, Breaking Capacity 70 kA, DIN Rail Mount
  • RS Stock No. 271-9805
  • Mfr. Part No. 3VA1116-6GE42-0AA0
Each
PHP88,263.11(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 60A, Breaking Capacity 7 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-704
  • Mfr. Part No. 3VA5160-5EF31-0AA0
Each
PHP39,346.31(exc. VAT)
Temporarily out of stock
Better World
Siemens RCBO, 13A Current Rating, 3P Poles, 30mA Trip Sensitivity, Type B, Sentron Range
  • RS Stock No. 243-6204
  • Mfr. Part No. 5SU1336-6FP13
Each
PHP21,383.16(exc. VAT)
Temporarily out of stock
ABB Tmax XT Plug In Unit for use with XT1
  • RS Stock No. 236-6637
  • Mfr. Part No. 1SDA068185R1 XT1 P FP EF
Each
PHP22,486.89(exc. VAT)
Temporarily out of stock
ABB S804N MCB, 4P, 63A Curve B, 690V AC, 36 kA Breaking Capacity
  • RS Stock No. 140-654
  • Mfr. Part No. 2CCS894001R0635
Each
PHP23,802.27(exc. VAT)
Temporarily out of stock
ABB S203L MCB, 3P, 25A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 203-080
  • Mfr. Part No. 2CDS243701R0254
Each
PHP11,816.72(exc. VAT)
Temporarily out of stock
ABB Earthing Kit
  • RS Stock No. 237-6351
  • Mfr. Part No. 2CPX046013R9999
1 Box of 1
PHP1,027.85(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 32A Curve C, 250V DC, 10 kA Breaking Capacity
  • RS Stock No. 230-897
  • Mfr. Part No. 113766 FAZ-C32/1-NA-DC
Each
PHP8,943.93(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 630A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 270-4810
  • Mfr. Part No. 3VA2563-5MP32-0AA0
Each
PHP192,450.99(exc. VAT)
In Stock
Schurter PC Board Non Resettable Fuse, Radial 250mA, 250V ac
  • RS Stock No. 284-5041
  • Mfr. Part No. 0034.6008
Each (In a Pack of 10)
PHP43.56(exc. VAT)
Temporarily out of stock
Schneider Electric Multi9 M9F MCB Mini Circuit Breaker, 3P, 45A Curve C, 240V AC, 10 kA Breaking Capacity
  • RS Stock No. 654-066
  • Mfr. Part No. M9F42345
Each
PHP14,911.28(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Masterpact Chassis for use with Masterpact MTZ1 06-10 H1, Masterpact MTZ1 06-10 H2, Masterpact MTZ1
  • RS Stock No. 248-4151
  • Mfr. Part No. LV833722
Each
PHP303,077.59(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX630 Circuit Breakers
  • RS Stock No. 260-8194
  • Mfr. Part No. C6346E630
Each
PHP227,338.53(exc. VAT)
In Stock
Better World
Schneider Electric RCBO, 16A Current Rating, 3P+N Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3266
  • Mfr. Part No. A9DA7716
Each
PHP32,072.17(exc. VAT)
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