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

33502 Products showing for Fuses & Circuit Breakers

145 of 999+
Temporarily out of stock
Better World
ABB, XT2S MCCB 3P 16A, Fixed Mount
  • RS Stock No. 236-7469
  • Mfr. Part No. 1SDA067738R1 XT2S 160 TMG 16A FF
Each
PHP29,343.30(exc. VAT)
In Stock
Schneider Electric RCBO, 13A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Resi9 Range
  • RS Stock No. 212-135
  • Mfr. Part No. R9D01613
Each
PHP10,994.46(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 3P 250A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 212-0275
  • Mfr. Part No. LV433574
Each
PHP184,792.03(exc. VAT)
Temporarily out of stock
Siemens SENTRON Nut Keeper Kit for use with 3VA5
  • RS Stock No. 269-7207
  • Mfr. Part No. 3VA9474-0QA00
Each (In a Pack of 4)
PHP1,369.505(exc. VAT)
In Stock
Europa RCBO, 16A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type AC, EUC7R Range
  • RS Stock No. 210-4739
  • Mfr. Part No. EUC7RC.16/1CA
Each
PHP4,700.17(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 Active iDT40 AFDD, 40A, 1+N Pole
  • RS Stock No. 238-3484
  • Mfr. Part No. A9TYA4640
Each
PHP38,457.91(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 100/160/250 Circuit Breakers
  • RS Stock No. 260-9347
  • Mfr. Part No. C1036M080
Each
PHP112,216.41(exc. VAT)
In Stock
ABB Tmax XT Changeover Contact for use with Circuit Breaker
  • RS Stock No. 232-0183
  • Mfr. Part No. 1SDA066431R1 AUX-C 1Q+1SY 250V XT1..XT4
Each
PHP5,034.90(exc. VAT)
Temporarily out of stock
ABB S800S MCB, 3P, 20A Curve C, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 141-083
  • Mfr. Part No. 2CCS863001R0204
Each
PHP20,954.12(exc. VAT)
In Stock
ABB Surge Protector, DIN Rail Mount
  • RS Stock No. 136-3874
  • Mfr. Part No. 1SNA295405R2700
Each
PHP609.62(exc. VAT)
In Stock
Better World
Siemens RCBO, 32A Current Rating, 2P Poles, 30mA Trip Sensitivity, Sentron Range
  • RS Stock No. 150-4181
  • Mfr. Part No. 5SU1354-6KK32
Each
PHP8,185.69(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 250A, Fixed Mount
  • RS Stock No. 260-8165
  • Mfr. Part No. C40W32D250
Each
PHP306,233.78(exc. VAT)
In Stock
Siemens 230V ac Undervoltage Release Circuit Trip for use with 3RV2 Series Circuit Breakers
  • RS Stock No. 706-1939
  • Mfr. Part No. 3RV2902-1AP0
Each
PHP4,433.53(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 80A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 269-664
  • Mfr. Part No. 3VA5280-6EC41-2AA0
Each
PHP105,567.70(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 500A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-3508
  • Mfr. Part No. 3VA1450-5MH32-0AA0
Each
PHP114,026.36(exc. VAT)
Temporarily out of stock
Schneider Electric Surge Arrester, 20kA, 2kV, Plug In Mount
  • RS Stock No. 357-058
  • Mfr. Part No. A9L20122
Each (In a Pack of 12)
PHP4,129.704(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 2P, 40A Curve C, 500V DC, 10 kA Breaking Capacity
  • RS Stock No. 231-687
  • Mfr. Part No. 120650 FAZ-C40/2-NA-DC
Each
PHP18,327.73(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 Load Center for use with Type B Type Distribution Board
  • RS Stock No. 244-968
  • Mfr. Part No. SE125SPP
Each
PHP4,336.77(exc. VAT)
In Stock
ABB System Pro M Compact S200 M UC MCB, 2P, 2A, Type Z, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-355
  • Mfr. Part No. 2CDS272061R0278
Each
PHP26,593.10(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SJ4105 MCB, 1P, 500mA Curve D, 400V AC, 60V DC, 14 kA Breaking Capacity
  • RS Stock No. 300-007
  • Mfr. Part No. 5SJ4105-8HG41
Each
PHP5,405.27(exc. VAT)
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