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

33491 Products showing for Fuses & Circuit Breakers

9 of 999+
Schneider Electric Acti9 SE10 MCB Mini Circuit Breaker, 1P, 20A Curve C, 415V AC, 10000 A Breaking Capacity
  • RS Stock No. 336-608
  • Mfr. Part No. SE10C120
Each
PHP1,948.89(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 630A, Fixed Mount
  • RS Stock No. 260-8212
  • Mfr. Part No. C63H32D630
Each
PHP401,028.86(exc. VAT)
Schneider Electric Acti9 K60H MCB Mini Circuit Breaker, 2P, 10A Curve C, 400V AC, 10000 A Breaking Capacity
  • RS Stock No. 588-891
  • Mfr. Part No. A9K12210
Each
PHP1,138.62(exc. VAT)
ABB PS1 1 Phase Busbar, 230 → 400V
  • RS Stock No. 225-5981
  • Mfr. Part No. 2CDL210001R1006 PS1/6
Each
PHP243.38(exc. VAT)
Siemens SENTRON 5SY6 MCB, 2P, 30A Curve C, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-378
  • Mfr. Part No. 5SY6230-7
Each
PHP7,337.37(exc. VAT)
Littelfuse PC Board Non Resettable Fuse, Axial 7A, 125V ac/dc
  • RS Stock No. 541-3316
  • Mfr. Part No. 0251007.HAT1L
Each (In a Pack of 10)
PHP49.896(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 50A, Breaking Capacity 7 kA
  • RS Stock No. 159-511
  • Mfr. Part No. 3VA1150-3ED36-0AA0
Each
PHP24,559.15(exc. VAT)
RS PRO Earthing Strap Copper 75 x 13mm Diameter
  • RS Stock No. 264-9219
Each (In a Pack of 5)
PHP213.85(exc. VAT)
Eaton RCD, 20A, 2 Pole, 30mA, Type C, 230V
  • RS Stock No. 922-8737
  • Mfr. Part No. 236249 PKNM-20/1N/C/003-A-MW
Each
PHP9,697.86(exc. VAT)
Schurter 1.6A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 789-7839
  • Mfr. Part No. 0034.1518
Each (In a Bag of 10)
PHP15.856(exc. VAT)
RS PRO 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 668-5969
Each (In a Pack of 10)
PHP24.812(exc. VAT)
Better World
Schneider Electric RCBO, 20A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, Acti 9 Range
  • RS Stock No. 790-9452
  • Mfr. Part No. A9D56620
Each
PHP22,146.84(exc. VAT)
ABB System Pro M Compact S200 M UC MCB, 3P, 30A Curve K, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 202-952
  • Mfr. Part No. 2CDS273061R0527
Each
PHP39,393.01(exc. VAT)
Mersen 2A Ceramic Cartridge Fuse, 10 x 38mm
  • RS Stock No. 188-6956
  • Mfr. Part No. D213098
Each (In a Pack of 10)
PHP83.931(exc. VAT)
Better World
Schneider Electric, ComPacT NSX MCCB 3P 200A, Fixed Mount
  • RS Stock No. 254-6360
  • Mfr. Part No. C25N3TM200
Each
PHP131,699.65(exc. VAT)
RS PRO 1A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-380
Each (In a Pack of 10)
PHP24.907(exc. VAT)
Finder 3 Phase Surge Protector, 40kA, 275V ac
  • RS Stock No. 257-7421
  • Mfr. Part No. 7P2482751020
Each
PHP13,350.80(exc. VAT)
Schneider Electric, EasyPact MCCB 3P 30A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 269-6137
  • Mfr. Part No. EZC100N3030
Each
PHP16,820.75(exc. VAT)
ABB 24 Way Plastic Consumer Unit, 125A, IP65 Mistral65
  • RS Stock No. 811-1906
  • Mfr. Part No. 1SL1204A00 65P12X22
Each
PHP4,858.52(exc. VAT)
Siemens 6A Centred Tag Fuse, NH000, 690V
  • RS Stock No. 210-6899
  • Mfr. Part No. 3NA3801-6
Each (In a Pack of 3)
PHP3,206.387(exc. VAT)
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