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

127 of 999+
SRP120F
  • RS Stock No. 552-423
  • Mfr. Part No. RF1669-000
1 Bag of 100
PHP2,860.98(exc. VAT)
Siemens SENTRON Protection Module for use with 5SY
  • RS Stock No. 211-9564
  • Mfr. Part No. 5SM2326-0
Each
PHP18,449.31(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3992
  • Mfr. Part No. 3VA2110-7JQ32-0AA0
Each
PHP130,173.37(exc. VAT)
Siemens Alpha Assembly Kit for use with Unequipped Distribution Boards
  • RS Stock No. 212-9051
  • Mfr. Part No. 8GK4101-6KK22
Each
PHP18,888.24(exc. VAT)
Siemens 3NC Fuse Clip
  • RS Stock No. 299-767
  • Mfr. Part No. 3NC1000
Each
PHP2,982.56(exc. VAT)
Better World
Schneider Electric RCBO, 16A Current Rating, 3P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3260
  • Mfr. Part No. A9DA3716
Each
PHP33,305.72(exc. VAT)
Schurter Thermal Circuit Breaker - T9 Single Pole 48 V dc, 240V ac Voltage Rating, 10A Current Rating
  • RS Stock No. 830-4300P
  • Mfr. Part No. 4404.0102
Each (Supplied in a Bag)
PHP263.66(exc. VAT)
ABB S302 MCB, 2P, 10A Curve B, 415V AC, 125V DC, 100 kA Breaking Capacity
  • RS Stock No. 204-244
  • Mfr. Part No. 2CDS382001R0105
Each
PHP8,160.80(exc. VAT)
Siemens SENTRON Interlock for use with 3VA15
  • RS Stock No. 161-612
  • Mfr. Part No. 3VA9588-0VM10
Each
PHP41,640.59(exc. VAT)
Eaton MCB, 3P, 13A Curve D, 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 244-013
  • Mfr. Part No. 101327 PLI-D13/3
Each
PHP9,457.11(exc. VAT)
ABB System Pro M Compact S200 M UC MCB, 2P, 32A Curve B, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 201-015
  • Mfr. Part No. 2CDS272061R0325
Each
PHP13,658.27(exc. VAT)
Littelfuse PC Board Non Resettable Fuse, Axial 4A, 125V ac
  • RS Stock No. 895-1612
  • Mfr. Part No. 0473004.MRT1L
Each (In a Pack of 10)
PHP92.88(exc. VAT)
Bourns Non Resettable Fuse 2.5A, 125V ac
  • RS Stock No. 191-4196
  • Mfr. Part No. SF-2410HI250T-2
Each (On a Reel of 1000)
PHP40.503(exc. VAT)
HENSEL ENYBOARD Distribution Board, 41 A
  • RS Stock No. 117-788
  • Mfr. Part No. RK 0612 T
Each
PHP4,179.23(exc. VAT)
Littelfuse SMD Non Resettable Fuse 5A, 32V
  • RS Stock No. 820-7120
  • Mfr. Part No. 0438005.WR
Each (In a Pack of 100)
PHP55.698(exc. VAT)
Schneider Electric 250V (Volts) Shunt Release Circuit Trip for use with Masterpact MasterPact MTZ2 Circuit Breaker
  • RS Stock No. 655-033
  • Mfr. Part No. LV833662SP
Each
PHP24,929.27(exc. VAT)
Schneider Electric Motor Mechanism for use with ComPacT, ComPact Compact NSX250 DC, PowerPact
  • RS Stock No. 276-9258
  • Mfr. Part No. LV431541
Each
PHP112,133.50(exc. VAT)
Schneider Electric Acti9 A9F MCB, 3P, 10A Curve B, 440V AC, 180V DC, 25 kA Breaking Capacity
  • RS Stock No. 288-7086
  • Mfr. Part No. A9F93310
Each
PHP19,913.23(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 100A, Fixed Mount
  • RS Stock No. 260-9490
  • Mfr. Part No. C10N34V100
Each
PHP164,036.14(exc. VAT)
Siemens 100A Centred Tag Fuse, NH2, 690V
  • RS Stock No. 210-6888
  • Mfr. Part No. 3NA3230-6
Each (In a Pack of 3)
PHP4,572.147(exc. VAT)
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