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

33476 Products showing for Fuses & Circuit Breakers

24 of 999+
Temporarily out of stock
ABB MCCB 3P 125A, Breaking Capacity 36 kA, 50 kA
  • RS Stock No. 192-0821
  • Mfr. Part No. 1SDA067417R1
Each
PHP45,303.58(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 2P 15A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 147-611
  • Mfr. Part No. 3VA5195-4ED21-0AA0
Each
PHP30,491.36(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 63A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9733
  • Mfr. Part No. LV510335
Each
PHP22,981.63(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 500A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9793
  • Mfr. Part No. LV563305
Each
PHP109,676.69(exc. VAT)
Temporarily out of stock
Eaton MCB, 1P, 2A Curve C, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 248-578
  • Mfr. Part No. 101252 PLI-C2/1
Each
PHP2,710.72(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 125A, Breaking Capacity 50kA, Fixed Mount
  • RS Stock No. 260-9763
  • Mfr. Part No. LV516462
Each
PHP47,822.57(exc. VAT)
In Stock
Better World
Schneider Electric RCBO, 10A Current Rating, 1P+N Poles, Type AB, Easy9 Range
  • RS Stock No. 850-8644
  • Mfr. Part No. EZ9D16810
Each
PHP2,117.04(exc. VAT)
In Stock
WJ Furse Copper Alloy Earth Clamp Nominal Rod dia. 9.5mm
  • RS Stock No. 153-2962
  • Mfr. Part No. 7TCA083220R0002 CR205
Each (In a Pack of 10)
PHP763.31(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 400A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9781
  • Mfr. Part No. LV540306
Each
PHP80,211.63(exc. VAT)
In Stock
Eaton 6A DI Bottle Fuse, E16 Thread Size, gG, 500V ac
  • RS Stock No. 181-8647
  • Mfr. Part No. 6D16
Each
PHP324.21(exc. VAT)
In Stock
Littelfuse PC Board Non Resettable Fuse, Radial 3A, 125V ac/dc
  • RS Stock No. 878-3267
  • Mfr. Part No. 0273003.H
Each
PHP368.06(exc. VAT)
In Stock
Littelfuse PC Board Non Resettable Fuse, Axial 5A, 125V ac/dc
  • RS Stock No. 541-3300
  • Mfr. Part No. 0251005.NRT1L
Each (In a Pack of 10)
PHP45.346(exc. VAT)
Temporarily out of stock
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 4P 630A, Fixed Mount
  • RS Stock No. 232-0089
  • Mfr. Part No. 1SDA054400R1 T5N630 FF PR221-LS 630A
Each
PHP214,250.25(exc. VAT)
Temporarily out of stock
Eaton BBA Busbar Adapter Busbar, 690V
  • RS Stock No. 248-680
  • Mfr. Part No. 101453 BBA0R-25
Each
PHP5,520.31(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 3P 200A, Breaking Capacity 65 kA, DIN Rail Mount
  • RS Stock No. 358-358
  • Mfr. Part No. NJGF36200TW
Each
PHP253,973.88(exc. VAT)
In Stock
Schneider Electric, ComPacT new generation Circuit breaker 1P 63A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 110-319
  • Mfr. Part No. C10N1TM063
Each
PHP15,607.22(exc. VAT)
In Stock
ETI 20A DII Diazed Fuse, E27 Thread Size, gG - gL, 500V ac
  • RS Stock No. 413-670
  • Mfr. Part No. 2312406
Each (In a Pack of 5)
PHP98.92(exc. VAT)
Unavailable
Schneider Electric Pragma Distribution Board, 18 Way, 125 A
  • RS Stock No. 653-8315
  • Mfr. Part No. PRA13753
Each
PHP13,672.53(exc. VAT)
Temporarily out of stock
Schneider Electric Masterpact Control Unit for use with Masterpact NT/NW Series Circuit Breaker
  • RS Stock No. 247-1888
  • Mfr. Part No. 47280
Each
PHP210,978.54(exc. VAT)
In Stock
Siemens 16A NH Fuse, NH000, 500V ac
  • RS Stock No. 397-363
  • Mfr. Part No. 3NA3805
1 Pack of 3
PHP1,490.56(exc. VAT)
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