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

186 of 999+
Temporarily out of stock
Lovato P1RD MCCB, 63A, 2 Pole, 300mA, Type A, 230V ac
  • RS Stock No. 276-5667
  • Mfr. Part No. P1RD2P63A300
Each
PHP19,920.47(exc. VAT)
In Stock
Schneider Electric 440V ac Circuit Breaker Circuit Trip for use with Circuits
  • RS Stock No. 130-543
  • Mfr. Part No. C16F44B160
Each
PHP297,441.19(exc. VAT)
Temporarily out of stock
Lovato Terminal for use with P1MB
  • RS Stock No. 825-6144
  • Mfr. Part No. P1X9202
Each
PHP754.51(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller IZMX/INX Circuit breaker 3P 3.2kA, Breaking Capacity 105 kA, Fixed Mount
  • RS Stock No. 246-498
  • Mfr. Part No. 183724 IZMX40H3-V32F-1
Each
PHP1,423,111.19(exc. VAT)
Unavailable
Schneider Electric, NSX MCCB 4P 100A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 219-8394
  • Mfr. Part No. LV433835
Each
PHP176,206.98(exc. VAT)
In Stock
Littelfuse PC Board Non Resettable Fuse, Axial 3A, 125V ac/dc
  • RS Stock No. 541-3293
  • Mfr. Part No. 0251003.NRT1L
Each (In a Pack of 10)
PHP40.788(exc. VAT)
In Stock
Siemens 500A Centred Tag Fuse, NH3L, 1kV
  • RS Stock No. 230-3003
  • Mfr. Part No. 3NE1434-4E
Each (In a Pack of 2)
PHP26,281.015(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New Generation MCCB 3P 150A, Fixed Mount
  • RS Stock No. 260-7757
  • Mfr. Part No. C16F3MA150
Each
PHP66,802.25(exc. VAT)
Being discontinued
RS PRO PC Board Non Resettable Fuse, Axial 3A, 250V ac
  • RS Stock No. 764-9558
Each (In a Pack of 10)
PHP42.961(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 1 Phase Distribution Board, 20 Way
  • RS Stock No. 339-637
  • Mfr. Part No. SEA9DE40
Each
PHP15,970.75(exc. VAT)
Temporarily out of stock
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 100A, Breaking Capacity 3 kA
  • RS Stock No. 245-738
  • Mfr. Part No. 3VA6210-8JP41-0AA0
Each
PHP310,105.11(exc. VAT)
Temporarily out of stock
Siemens Surge Suppressor Unit, 48 → 127V dc, Clip-On Mount
  • RS Stock No. 156-524
  • Mfr. Part No. 3RT1956-1CC02
Each
PHP3,273.64(exc. VAT)
Temporarily out of stock
Schneider Electric, Compact MCCB 4P 800A, Breaking Capacity 30 kA
  • RS Stock No. 354-525
  • Mfr. Part No. C080H4WM
Each
PHP278,947.97(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60H MCB, 1P, 10A Curve C, 100 → 133V AC, 72V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3293
  • Mfr. Part No. A9F54110
Each
PHP1,621.75(exc. VAT)
In Stock
Eaton PXF-A RCCB, 40A, 3+N Pole, 30mA, Type A, 400V ac
  • RS Stock No. 490-466
  • Mfr. Part No. 236776 PXF-40/4/003-A
Each
PHP4,256.95(exc. VAT)
Temporarily out of stock
Schneider Electric RCBO, 32A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Acti9 Range
  • RS Stock No. 654-746
  • Mfr. Part No. A9DH3632
Each
PHP19,582.75(exc. VAT)
Temporarily out of stock
Eaton RCBO, 10A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A, Type B, FRBdM Range
  • RS Stock No. 121-276
  • Mfr. Part No. 168264 FRBDM-B10/1N/003-G/A
Each
PHP11,975.25(exc. VAT)
In Stock
ABB Cover for use with ABB Tmax XT1
  • RS Stock No. 831-9210
  • Mfr. Part No. 1SDA066905R1 KIT FC Cu XT1 3pcs
Each (In a Pack of 3)
PHP1,285.137(exc. VAT)
In Stock
Phoenix Contact Surge Protector, 10kA, DIN Rail Mount
  • RS Stock No. 207-2674
  • Mfr. Part No. 1065316
Each
PHP7,087.51(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New generation MCCB 4P 50A, Breaking Capacity 440 V, Fixed Mount
  • RS Stock No. 205-217
  • Mfr. Part No. C11H44V050B
Each
PHP238,508.91(exc. VAT)
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