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

197 of 999+
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)
Eaton 4A British Standard Fuse, F1, 550V ac
  • RS Stock No. 413-478
  • Mfr. Part No. NSD4
Each (In a Pack of 5)
PHP482.724(exc. VAT)
Siemens SENTRON 3 Phase Busbar, 17.8mm Pitch
  • RS Stock No. 202-7064
  • Mfr. Part No. 5ST3624
Each (In a Pack of 10)
PHP1,015.683(exc. VAT)
Schneider Electric, Compact MCCB 4P 1.6kA, Fixed Mount
  • RS Stock No. 247-1818
  • Mfr. Part No. 33484
Each
PHP499,318.59(exc. VAT)
Siemens SENTRON 5SY4 MCB, 2P, 32A, Type A, 400V AC, 60V DC, 20 kA Breaking Capacity
  • RS Stock No. 610-420
  • Mfr. Part No. 5SY4232-5
Each
PHP10,492.44(exc. VAT)
Hager HMC MCB, 2P, 80A, 400V AC, 15 Breaking Capacity
  • RS Stock No. 602-110
  • Mfr. Part No. HMC280
Each
PHP27,564.35(exc. VAT)
Hager BF RCCB, 25A, 2P Pole, 300mA, Type A
  • RS Stock No. 602-183
  • Mfr. Part No. BF225
Each
PHP27,991.17(exc. VAT)
Schneider Electric for use with ComPact NS630b → 1600 Circuit Breaker
  • RS Stock No. 247-1758
  • Mfr. Part No. 33195
Each
PHP4,099.93(exc. VAT)
Siemens SIRIUS 3 Phase Busbar, 690V
  • RS Stock No. 218-865
  • Mfr. Part No. 3RV2925-5AB
Each
PHP1,391.44(exc. VAT)
Siemens 250A NH Fuse, NH2, 690 / 250V ac/dc
  • RS Stock No. 269-8355
  • Mfr. Part No. 3ND2244
Each (In a Pack of 3)
PHP3,750.13(exc. VAT)
Littelfuse 15A Blue Blade Car Fuse, 32V ac/dc
  • RS Stock No. 878-3286
  • Mfr. Part No. 0MIN015.V
Each (In a Pack of 50)
PHP52.21(exc. VAT)
Eaton PC Board Non Resettable Fuse, Radial 1A, 250V ac
  • RS Stock No. 769-3261
  • Mfr. Part No. SR-5F-1A-BK
Each (In a Pack of 5)
PHP114.266(exc. VAT)
Mersen 32A Bolted Tag Fuse, A3, 460 V dc, 690V ac, 73mm
  • RS Stock No. 178-1115
  • Mfr. Part No. E1006599 / BTIS69V32M50
Each (In a Pack of 10)
PHP1,128.553(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4753
  • Mfr. Part No. 3VA2163-7JQ36-0AA0
Each
PHP128,424.98(exc. VAT)
Siemens SIRIUS 3 Phase Busbar, 55mm Pitch
  • RS Stock No. 755-2848
  • Mfr. Part No. 3RV1915-2AB
Each
PHP1,202.27(exc. VAT)
Better World
Schneider Electric, ComPacT NSX MCCB 3P 63A, Fixed Mount
  • RS Stock No. 254-6319
  • Mfr. Part No. C11H3TM063L
Each
PHP37,685.68(exc. VAT)
ABB RCBO, 20A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type B, System Pro M Compact Range
  • RS Stock No. 181-4380
  • Mfr. Part No. DS-ARC1 M B20 A30
Each
PHP22,980.21(exc. VAT)
Eaton xEffect FAZ MCB, 3P, 50A Curve C, 240V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 239-786
  • Mfr. Part No. 190791 FAZ-C50/3-NA
Each
PHP24,852.40(exc. VAT)
Schneider Electric, EasyPact Circuit breaker 4P 400A, Breaking Capacity 50 kA, Fixed Mount
  • RS Stock No. 100-835
  • Mfr. Part No. EZC400H4400N
Each
PHP71,507.07(exc. VAT)
Schneider Electric R9R RCCB, 25A, 2 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 654-672
  • Mfr. Part No. R9R22225
Each
PHP6,867.78(exc. VAT)
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