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

873 Products showing for Fuses & Circuit Breakers

1 of 44
Temporarily out of stock
Siemens 32A Cartridge Fuse, 14 x 51mm
  • RS Stock No. 627-028
  • Mfr. Part No. 3NW8112-1
1 Pack of 10
PHP4,276.95(exc. VAT)
New product - Preorder today
Schneider Electric R9R RCCB, 40A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 654-662
  • Mfr. Part No. R9R22240
Each
PHP7,667.55(exc. VAT)
Temporarily out of stock
Siemens 10A Cartridge Fuse, 14 x 51mm
  • RS Stock No. 627-152
  • Mfr. Part No. 3NC1410-0MK
1 Pack of 10
PHP7,264.00(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 125A, Breaking Capacity 36 kA, Panel Mount
  • RS Stock No. 654-703
  • Mfr. Part No. IL1253P36
Each
PHP52,938.92(exc. VAT)
Limited stock
nVent ERICO Neutral Double Busbar Busbar
  • RS Stock No. 646-816
  • Mfr. Part No. 568722
Each
PHP840.13(exc. VAT)
Temporarily out of stock
Schneider Electric RCBO, 10A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Easy9 Range
  • RS Stock No. 654-753
  • Mfr. Part No. EZ9TDA7610
Each
PHP15,418.44(exc. VAT)
Being discontinued
RS PRO 2.5A F Glass Cartridge Fuse, 6.3 x 32mm
  • RS Stock No. 668-6039
Each (In a Pack of 10)
PHP18.984(exc. VAT)
In Stock
nVent ERICO DPCB Busbar
  • RS Stock No. 646-799
  • Mfr. Part No. 550410
Each
PHP14,046.66(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 800A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 655-144
  • Mfr. Part No. C080N320FM
Each
PHP239,493.92(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 3, 3+N Phase Distribution Board, 24 Way, 250 A
  • RS Stock No. 654-823
  • Mfr. Part No. SEA9BPNAFD24
Each
PHP48,711.11(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY Circuit Breaker, 1P, 16A Curve D, 440V AC, 60V DC, 30 kA Breaking Capacity
  • RS Stock No. 664-371
  • Mfr. Part No. 5SY8116-8
Each
PHP3,448.56(exc. VAT)
In Stock
Schneider Electric, ComPacT NSX MCCB 3P 250A, Breaking Capacity 36 kA, Panel Mount
  • RS Stock No. 654-704
  • Mfr. Part No. IL2503P36
Each
PHP81,005.99(exc. VAT)
In Stock
Schneider Electric, ComPacT NSX Circuit breaker 1P 16A, Breaking Capacity 25 kA, Busbar System
  • RS Stock No. 654-244
  • Mfr. Part No. IL0161P251
Each
PHP12,541.62(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 A9F MCB Mini Circuit Breaker, 2P, 16A Curve C, 500V AC, 10 kA Breaking Capacity
  • RS Stock No. 653-861
  • Mfr. Part No. A9F74216
Each
PHP5,947.64(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY Circuit Breaker, 2P, 10A Curve D, 440V AC, 60V DC, 40 kA Breaking Capacity
  • RS Stock No. 664-310
  • Mfr. Part No. 5SY8210-8
Each
PHP10,419.07(exc. VAT)
Temporarily out of stock
RND 4A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 697-225
  • Mfr. Part No. RND 170-00065
1 Pack of 25
PHP126.14(exc. VAT)
In Stock
Schneider Electric TeSys GV5P MCB, 3P, 150A, 690V AC, 36 kA Breaking Capacity
  • RS Stock No. 188-4748
  • Mfr. Part No. GV5P150F
Each
PHP59,379.68(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 iC60 MCB Mini Circuit Breaker, 4P, 1.6A Curve K, 500V AC, 250V DC, 100 kA Breaking Capacity
  • RS Stock No. 655-447
  • Mfr. Part No. A9F95472
1 Pack of 3
PHP99,447.40(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY Circuit Breaker, 2P, 15A Curve C, 440V AC, 60V DC, 20 kA Breaking Capacity
  • RS Stock No. 664-297
  • Mfr. Part No. 5SY4218-7
Each
PHP6,574.28(exc. VAT)
Limited stock
nVent ERICO Neutral Busbar Busbar
  • RS Stock No. 646-805
  • Mfr. Part No. 568678
Each
PHP797.57(exc. VAT)
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