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

33476 Products showing for Fuses & Circuit Breakers

17 of 999+
Littelfuse 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 541-4410
  • Mfr. Part No. 0217002.MXP
Each (In a Pack of 10)
PHP13.828(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)
Schneider Electric Acti9 3 Phase Distribution Board, 4 Way, 250 A
  • RS Stock No. 244-936
  • Mfr. Part No. SE12B250
Each
PHP25,178.43(exc. VAT)
Siemens SENTRON 5SY4 MCB, 2P, 60A Curve C, 400V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-313
  • Mfr. Part No. 5SY4260-7
Each
PHP14,087.75(exc. VAT)
Eaton 16A British Standard Fuse, A2, 660V ac, 73mm
  • RS Stock No. 415-143
  • Mfr. Part No. TIA16
Each (In a Pack of 5)
PHP939.752(exc. VAT)
Penta Fiberglass Earth Clamp Max. Conductor Size Cable CC 70mm² / terre 35mm² 317.5mm
  • RS Stock No. 248-9892
  • Mfr. Part No. PIMT49S
Each
PHP172,598.73(exc. VAT)
ABB SU 200 M Circuit Breaker, 2P, 15A Curve K, 440V AC, 96V DC, 15 kA Breaking Capacity
  • RS Stock No. 287-6395
  • Mfr. Part No. 2CDS272337R0457
Each
PHP7,664.82(exc. VAT)
nVent ERICO DPCB Busbar
  • RS Stock No. 646-833
  • Mfr. Part No. 550400
Each
PHP7,393.13(exc. VAT)
Better World
Schneider Electric iID RCCB, 25A, 2 Pole, 300mA
  • RS Stock No. 734-9337
  • Mfr. Part No. A9R14225
Each
PHP9,827.66(exc. VAT)
Better World
Schneider Electric Acti 9 iC60H MCB, 2P, 10A Curve C, 440V AC, 100 → 133V DC, 10 kA Breaking Capacity
  • RS Stock No. 791-3341
  • Mfr. Part No. A9F54210
Each
PHP4,623.14(exc. VAT)
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 80A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9734
  • Mfr. Part No. LV510336
Each
PHP31,750.50(exc. VAT)
Siemens SENTRON 5SY4 MCB, 2P, 4A Curve B, 230V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-504
  • Mfr. Part No. 5SY4504-6
Each
PHP3,874.13(exc. VAT)
ABB F200 RCCB, 40A, 2 Pole, 30mA, Type AC, 230V ac
  • RS Stock No. 537-7361
  • Mfr. Part No. 2CSF202001R1400 F202 AC-40/0,03
Each
PHP12,266.84(exc. VAT)
Sensata Airpax Airpax Thermal Circuit Breaker - R11 Single Pole Panel Mount, 20A Current Rating
  • RS Stock No. 275-0455
  • Mfr. Part No. R11-2-20.0A-B06CV-V
Each
PHP1,631.62(exc. VAT)
Hager NEN MCB, 2P, 63A Curve B, 240 → 400V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4969
  • Mfr. Part No. NEN263
Each
PHP16,836.48(exc. VAT)
Eaton 3A Bolt Fixing Photovoltaic Fuse, 1000V dc, 49.7mm
  • RS Stock No. 703-8245
  • Mfr. Part No. PV-3A10-T
Each
PHP647.00(exc. VAT)
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 3P 40A, Breaking Capacity 25kA, Fixed Mount
  • RS Stock No. 260-9714
  • Mfr. Part No. LV510303
Each
PHP20,725.20(exc. VAT)
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 80A, Fixed Mount
  • RS Stock No. 232-0248
  • Mfr. Part No. 1SDA067396R1 XT1C 160 TMD 80A FF
Each
PHP16,399.25(exc. VAT)
Penta Fiberglass Earth Set Max. Conductor Size Cable CC 70mm² / terre 35mm² 317.5mm
  • RS Stock No. 248-9891
  • Mfr. Part No. PIMT49
Each
PHP162,043.71(exc. VAT)
Schneider Electric RCBO, 16A Current Rating, 4P Poles, 30mA Trip Sensitivity, Type B, Acti9 Range
  • RS Stock No. 654-647
  • Mfr. Part No. A9D67416
Each
PHP24,726.94(exc. VAT)
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