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

212 of 999+
Limited stock
Sato Parts 10A PCB Mount Fuse Holder for 6.3 x 32 mm, 6.35 x 30 x 6.35 x 31.8 mm Fuse, 250V
  • RS Stock No. 229-4964
  • Mfr. Part No. F-200-N
Each
PHP111.32(exc. VAT)
Temporarily out of stock
Hager BFD RCCB, 40A, 1P+N Pole, 300mA, Type F
  • RS Stock No. 602-047
  • Mfr. Part No. BFD240F
Each
PHP37,258.93(exc. VAT)
Currently unavailable
Schurter SMD Non Resettable Fuse 3.15A, 125 V dc, 250V ac
  • RS Stock No. 173-8117
  • Mfr. Part No. 3404.2421.22
1 Reel of 1000
PHP66,033.00(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 K60H MCB Mini Circuit Breaker, 1P, 63A Curve C, 400V AC, 10000 A Breaking Capacity
  • RS Stock No. 588-902
  • Mfr. Part No. A9K12163
Each
PHP773.40(exc. VAT)
Temporarily out of stock
ABB Tmax XT Front Terminal for use with Tmax XT
  • RS Stock No. 237-6273
  • Mfr. Part No. 1SDA067189R1 FC CuAl 2x150 XT3 6PCS
Each
PHP23,671.75(exc. VAT)
Temporarily out of stock
ABB SMISSLINE Busbar for Smissline TP
  • RS Stock No. 246-2356
  • Mfr. Part No. 2CCF800267R0001
Each
PHP1,951.33(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 3P, 45A Curve C, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-304
  • Mfr. Part No. 5SY4345-7
Each
PHP19,003.79(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 500A 3VA, 3 channels
  • RS Stock No. 155-834
  • Mfr. Part No. 3VA2450-0MN32-0AA0
Each
PHP314,295.72(exc. VAT)
Temporarily out of stock
Siemens SENTRON Wire Connector for use with 3VA15/25 1000
  • RS Stock No. 269-7213
  • Mfr. Part No. 3VA9504-0JG23
Each (In a Pack of 2)
PHP10,725.155(exc. VAT)
Limited stock
Better World
Schneider Electric Acti 9 4 Phase Busbar, 415V ac, 18mm Pitch
  • RS Stock No. 776-2770
  • Mfr. Part No. A9XPH512
Each
PHP4,509.66(exc. VAT)
Temporarily out of stock
Schneider Electric Multi9 M9F MCB Mini Circuit Breaker, 3P, 40A Curve C, 240V AC, 10 kA Breaking Capacity
  • RS Stock No. 653-833
  • Mfr. Part No. M9F52340
Each
PHP13,138.39(exc. VAT)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 3P 320A, Fixed Mount
  • RS Stock No. 250-4080
  • Mfr. Part No. 1SDA054348R1
Each
PHP199,385.63(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3627
  • Mfr. Part No. 3VA2010-8KQ42-0AA0
Each
PHP165,739.62(exc. VAT)
Temporarily out of stock
Phoenix Contact 3 Phase Surge Protector, 50kA, 250V ac, DIN Rail Mount
  • RS Stock No. 712-5276
  • Mfr. Part No. 2800188
Each
PHP33,295.17(exc. VAT)
In Stock
RS PRO Non Resettable Fuse 5A, 250V ac
  • RS Stock No. 139-963
1 Bag of 10
PHP394.97(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 3P, 5A Curve D, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 235-145
  • Mfr. Part No. 102263 FAZ-D5/3-NA
Each
PHP17,301.37(exc. VAT)
Temporarily out of stock
Eaton RCBO, 20A Current Rating, 2P Poles, 100mA Trip Sensitivity, Type A, Type C, FRBdM Range
  • RS Stock No. 121-032
  • Mfr. Part No. 168286 FRBDM-C20/1N/01-G/A
Each
PHP13,029.76(exc. VAT)
Temporarily out of stock
Schneider Electric RCBO, 10A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 654-750
  • Mfr. Part No. A9TDFD610
Each
PHP37,262.98(exc. VAT)
Temporarily out of stock
ABB SACE Emax 2 Fixed Part for use with Circuit Breaker
  • RS Stock No. 231-9316
  • Mfr. Part No. 1SDA073910R1 E2.2 W FP Iu=2000 4p HR
Each
PHP183,581.12(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-378
  • Mfr. Part No. 3VA5140-5ED31-1AA0
Each
PHP26,927.98(exc. VAT)
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