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

33476 Products showing for Fuses & Circuit Breakers

86 of 999+
Temporarily out of stock
Siemens 800A Tag Fuse, 151mm, 690V
  • RS Stock No. 608-801
  • Mfr. Part No. 3NE1438-3
1 Pack of 3
PHP66,256.45(exc. VAT)
Temporarily out of stock
Siemens Labelling Plate for use with PT Relais
  • RS Stock No. 266-9622
  • Mfr. Part No. LZS:PT17040
Each (In a Pack of 10)
PHP25.108(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 1.6kA, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 654-858
  • Mfr. Part No. C160N350FM
Each
PHP500,179.94(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 3 Phase Distribution Board, 22 Way, 125 A
  • RS Stock No. 339-357
  • Mfr. Part No. SEA9BPN12514S8
Each
PHP697,838.32(exc. VAT)
In Stock
Better World
Schneider Electric, ComPact MCCB, Fixed Mount
  • RS Stock No. 221-0951
  • Mfr. Part No. LV429414
Each
PHP14,761.66(exc. VAT)
In Stock
Legrand RCCB, 63A, 2 Pole, 30mA, 230V
  • RS Stock No. 266-1362
  • Mfr. Part No. 411650
Each
PHP16,539.37(exc. VAT)
In Stock
Schneider Electric Surge Arrester, 40kA, 460V ac, Clip-On Mount
  • RS Stock No. 288-7109
  • Mfr. Part No. A9L40321
Each
PHP62,445.11(exc. VAT)
Temporarily out of stock
ABB RCBO, 10A Current Rating, 1P Poles, Type C
  • RS Stock No. 189-5647
  • Mfr. Part No. 2CSR245041R1104
Each
PHP6,250.38(exc. VAT)
Stock information currently inaccessible
Bourns 0.065A Resettable Fuse, 220V
  • RS Stock No. 167-4778
  • Mfr. Part No. CMF-RL50-0
Each (In a Box of 600)
PHP25.538(exc. VAT)
In Stock
ABB RCBO, 32A Current Rating, 3P Poles, Type B
  • RS Stock No. 237-5069
  • Mfr. Part No. 2CSR253001R1325
Each
PHP22,667.40(exc. VAT)
Temporarily out of stock
ABB S802N MCB, 2P, 20A Curve C, 690V AC, 36 kA Breaking Capacity
  • RS Stock No. 140-594
  • Mfr. Part No. 2CCS892001R0204
Each
PHP11,367.76(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 250A, Fixed Mount
  • RS Stock No. 260-7958
  • Mfr. Part No. C25R32D250
Each
PHP170,300.70(exc. VAT)
Temporarily out of stock
HENSEL ENYMOD Distribution Board
  • RS Stock No. 117-573
  • Mfr. Part No. Mi 1446
Each
PHP33,005.55(exc. VAT)
Temporarily out of stock
ABB Tmax XT Rear Terminal for use with Tmax XT
  • RS Stock No. 237-6035
  • Mfr. Part No. 1SDA066270R1 R FP XT2 3PCS
Each
PHP4,267.54(exc. VAT)
Temporarily out of stock
Eaton 100A Bottle Fuse, 7.2kV
  • RS Stock No. 228-704
  • Mfr. Part No. 7.2WFMSJ100
Each
PHP51,731.15(exc. VAT)
Temporarily out of stock
SENTRON Wire Connector for use with 3VA61/62 Series
  • RS Stock No. 263-968
  • Mfr. Part No. 3VA9144-0JK11
1 Kit
PHP15,102.05(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY5 MCB, 4P, 4A Curve C, 400V AC, 880V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-594
  • Mfr. Part No. 5SY5404-7
Each
PHP29,422.85(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 30A Curve B, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 245-849
  • Mfr. Part No. 132689 FAZ-B30/1-NA
Each
PHP2,690.51(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 209-4901
  • Mfr. Part No. 3VA1112-6ED42-0AA0
Each
PHP50,940.01(exc. VAT)
Temporarily out of stock
Schneider Electric A9W RCD, 25A, 4 Pole, 30mA, Type A, 400/415V ac
  • RS Stock No. 212-295
  • Mfr. Part No. A9W21425
Each
PHP14,404.36(exc. VAT)
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