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

33503 Products showing for Fuses & Circuit Breakers

323 of 999+
In Stock
Better World
Schneider Electric, PowerPact MCCB 3P 100A, Breaking Capacity 14 kA, Fixed Mount
  • RS Stock No. 212-0149
  • Mfr. Part No. BDL36100LU
Each
PHP58,308.09(exc. VAT)
In Stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 63A, Fixed Mount
  • RS Stock No. 254-6322
  • Mfr. Part No. C11N3TM063L
Each
PHP35,520.93(exc. VAT)
Unavailable
Schneider Electric ComPact Trip Unit for use with Compact NSX 160/250 circuit breakers
  • RS Stock No. 221-0977
  • Mfr. Part No. LV430475
Each
PHP48,425.99(exc. VAT)
In Stock
Schurter SMD Non Resettable Fuse 2A, 125V ac/dc
  • RS Stock No. 131-476
  • Mfr. Part No. 3404.0012.11
Each (In a Pack of 10)
PHP61.439(exc. VAT)
Temporarily out of stock
ABB S403M MCB, 3P, 50A Curve K, 440V AC, 12V DC, 15 kA Breaking Capacity
  • RS Stock No. 141-093
  • Mfr. Part No. 2CCS573001R0577
Each
PHP21,289.80(exc. VAT)
Temporarily out of stock
Schneider Electric RCBO, 16A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 654-838
  • Mfr. Part No. A9D73616
Each
PHP21,451.33(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 3P, 5A Curve C, 400V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-301
  • Mfr. Part No. 5SY4311-7
Each
PHP10,932.68(exc. VAT)
Temporarily out of stock
Littelfuse Non-Resettable Surface Mount Fuse 50A, 250V ac
  • RS Stock No. 229-1421
  • Mfr. Part No. 0456050.DRSDE
Each (On a Reel of 1500)
PHP230.472(exc. VAT)
In Stock
Better World
Schneider Electric iC60 RCD, 63A, 30mA
  • RS Stock No. 776-2929
  • Mfr. Part No. A9V31463
Each
PHP67,571.83(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX160/250 Circuit Breakers
  • RS Stock No. 260-7715
  • Mfr. Part No. C163TM125
Each
PHP15,581.68(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 1.6kA , Fixed
  • RS Stock No. 127-765
  • Mfr. Part No. 183553 IZMX16N4-V16F-1
Each
PHP803,231.12(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY7 MCB, 2P, 50A Curve D, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-539
  • Mfr. Part No. 5SY7250-8
Each
PHP17,316.19(exc. VAT)
Temporarily out of stock
HENSEL ENYSTAR Distribution Board, 75 A
  • RS Stock No. 117-696
  • Mfr. Part No. FP FC 36
Each
PHP4,663.01(exc. VAT)
Temporarily out of stock
Eaton MCB, 1P, 4A Curve D, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 243-996
  • Mfr. Part No. 101281 PLI-D4/1N
Each
PHP5,175.75(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S300P MCB, 3+N, 10A, Type Z, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 203-097
  • Mfr. Part No. 2CDS383103R0428
Each
PHP39,681.14(exc. VAT)
Temporarily out of stock
SENTRON Support for use with 3VA23/24, Door Mounted Rotary Operator 3VA13/14
  • RS Stock No. 263-528
  • Mfr. Part No. 3VA9467-0GA85
Each
PHP5,586.29(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 50A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 271-9346
  • Mfr. Part No. 3VA1150-3ED46-0AA0
Each
PHP28,543.91(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 16A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 210-1686
  • Mfr. Part No. 3VA1196-5EE46-0AA0
Each
PHP34,195.51(exc. VAT)
In Stock
Schurter PC Board Non Resettable Fuse, Radial 1A, 250V ac
  • RS Stock No. 284-5108
  • Mfr. Part No. 0034.6014
Each (In a Pack of 10)
PHP30.956(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SJ4263 MCB, 2P, 63A Curve C, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 299-625
  • Mfr. Part No. 5SJ4263-7HG41
Each
PHP26,130.70(exc. VAT)
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