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
Fuses - PCB
Fuses - PCB

33502 Products showing for Fuses & Circuit Breakers

175 of 999+
Temporarily out of stock
Better World
ABB, XT4H MCCB 4P 160A, Fixed Mount
  • RS Stock No. 236-6806
  • Mfr. Part No. 1SDA068549R1 XT4H 160 Ekip LSIG 160A FF
Each
PHP168,011.51(exc. VAT)
In Stock
HENSEL ENYBOARD Distribution Board, 63 A
  • RS Stock No. 117-309
  • Mfr. Part No. KV PC 6109
Each
PHP3,879.74(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 3P 16A, Breaking Capacity 70 kA, Clip-On
  • RS Stock No. 178-7798
  • Mfr. Part No. LV426550
Each
PHP33,764.32(exc. VAT)
Temporarily out of stock
Siemens 200A Centred Tag Fuse, NH1, 500V ac
  • RS Stock No. 203-2129
  • Mfr. Part No. 3NA7140
Each (In a Pack of 3)
PHP1,107.503(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 63A, Breaking Capacity 36 kA, Panel Mount
  • RS Stock No. 654-702
  • Mfr. Part No. IL0633P36
Each
PHP40,503.43(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 80A, Breaking Capacity 25 kA, Panel Mount
  • RS Stock No. 654-817
  • Mfr. Part No. IL0803P25
Each
PHP29,094.44(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 32A, Breaking Capacity 25 kA, Panel Mount
  • RS Stock No. 654-814
  • Mfr. Part No. IL0323P25
Each
PHP25,557.35(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 40A, Breaking Capacity 25 kA, Panel Mount
  • RS Stock No. 654-756
  • Mfr. Part No. IL0403P25
Each
PHP25,557.35(exc. VAT)
Currently unavailable
Schurter PC Board Non Resettable Fuse, Axial 63mA, 125V ac/dc
  • RS Stock No. 173-9701
  • Mfr. Part No. 7010.6300.13
Each (In a Bag of 100)
PHP83.549(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Insulation accessory for use with Compact Nsx, Easypact Cvs
  • RS Stock No. 221-1261
  • Mfr. Part No. LV432579
Each
PHP3,897.96(exc. VAT)
Temporarily out of stock
Schneider Electric 3 Phase Surge Arrester, 75kA, 3000V (Volts), Clip-On Mount
  • RS Stock No. 438-762
  • Mfr. Part No. M9L53480
Each
PHP88,794.90(exc. VAT)
In Stock
Hinode Electric Co Ltd 100A Bolted Tag Fuse, 61mm
  • RS Stock No. 103-4250
  • Mfr. Part No. 660GH-100
Each (In a Pack of 5)
PHP1,683.794(exc. VAT)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 4P 40A, Fixed Mount
  • RS Stock No. 236-6773
  • Mfr. Part No. 1SDA068496R1 XT4S 160 Ekip I 40A FF
Each
PHP81,887.32(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-4522
  • Mfr. Part No. 3VA2125-5MP32-0AA0
Each
PHP73,302.50(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric 48V ac/dc Remote Tripping Device Circuit Trip for use with LR3D Series, LRD Series
  • RS Stock No. 744-6970
  • Mfr. Part No. LAD703E
Each
PHP5,602.56(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 2A, 250V
  • RS Stock No. 895-1596P
  • Mfr. Part No. 0443002.DR
Each (Supplied on a Reel)
PHP100.00(exc. VAT)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 4P 100A, Fixed Mount
  • RS Stock No. 236-6782
  • Mfr. Part No. 1SDA068508R1 XT4S 160 Ekip LSIG 100A FF
Each
PHP152,157.38(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT New Generation Trip Unit for use with ComPacT NSX 400/630 Circuit Breakers
  • RS Stock No. 260-8065
  • Mfr. Part No. C4031M320
Each
PHP71,432.66(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 125A, Breaking Capacity 15 kA, Fixed Mount
  • RS Stock No. 347-118
  • Mfr. Part No. C25F6TM125
Each
PHP166,820.42(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY8 MCB, 4P, 6A Curve C, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-492
  • Mfr. Part No. 5SY8406-7
Each
PHP19,810.90(exc. VAT)
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