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

269 of 999+
Temporarily out of stock
Siemens SENTRON Busbar Adapter, 690V ac, 40mm Pitch
  • RS Stock No. 272-0363
  • Mfr. Part No. 8US1903-3AB00
Each
PHP2,285.85(exc. VAT)
In Stock
Eaton 125A Centred Tag Fuse, 1.5 x 5.75in, 600V
  • RS Stock No. 773-3564
  • Mfr. Part No. LPJ-125SP
Each
PHP24,547.93(exc. VAT)
In Stock
Eaton xE?ect - FRCmM-NA RCCB, 25A, 4 Pole, 30mA, Type A, 240/415V ac
  • RS Stock No. 120-728
  • Mfr. Part No. 167125 FRCMM-25/4/003-A-NA
Each
PHP12,353.45(exc. VAT)
In Stock
Better World
Schneider Electric RCBO, 25A Current Rating, 3P+N Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3268
  • Mfr. Part No. A9DA7725
Each
PHP32,153.95(exc. VAT)
In Stock
Better World
Schneider Electric iID RCCB, 25A, 4 Pole, 300mA
  • RS Stock No. 734-9352
  • Mfr. Part No. A9R14425
Each
PHP15,802.08(exc. VAT)
In Stock
Phoenix Contact 5A Brown Automotive Car Fuse, 32V No
  • RS Stock No. 253-7606
  • Mfr. Part No. 2908367
Each (In a Pack of 2)
PHP538.56(exc. VAT)
Temporarily out of stock
ABB Tmax XT Key Lock for use with Tmax XT
  • RS Stock No. 237-6106
  • Mfr. Part No. 1SDA066602R1 KLC XT2-4 RONIS TYPE C
Each
PHP7,444.20(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 630A, Fixed Mount
  • RS Stock No. 260-8238
  • Mfr. Part No. C63R45E630
Each
PHP515,786.44(exc. VAT)
In Stock
Better World
Siemens RCBO, 10A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type AC, Sentron Range
  • RS Stock No. 196-3608
  • Mfr. Part No. 5SU13531KK10
Each
PHP14,307.64(exc. VAT)
Temporarily out of stock
Legrand DX3 RCCB, 25A, 1+N Pole, 30mA, Type AC
  • RS Stock No. 732-0095
  • Mfr. Part No. 4 116 31
Each
PHP9,406.59(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, ComPacT NSX MCCB 4P 50A, Fixed Mount
  • RS Stock No. 254-6324
  • Mfr. Part No. C11N4TM050L
Each
PHP51,564.45(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 3P, 5A Curve C, 400V AC, 60V DC, 35 kA Breaking Capacity
  • RS Stock No. 610-301
  • Mfr. Part No. 5SY4311-7
Each
PHP10,932.68(exc. VAT)
In Stock
Schneider Electric Multi9 M9F1 MCB, 1P, 10A Curve B, 415V AC, 72V DC, 3 kA Breaking Capacity
  • RS Stock No. 212-122
  • Mfr. Part No. M9F10110
Each
PHP1,459.61(exc. VAT)
Temporarily out of stock
Eaton IZMX16B4-P12F-1 Electronic Circuit Breaker 1.25kA , Fixed
  • RS Stock No. 127-715
  • Mfr. Part No. 183401 IZMX16B4-P12F-1
Each
PHP706,905.14(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 1.6kA IZMX/INX, 4 channels , Fixed
  • RS Stock No. 127-757
  • Mfr. Part No. 183548 IZMX16B4-V16F-1
Each
PHP776,344.47(exc. VAT)
Temporarily out of stock
Bourns Thermal Fuse +77°C 200 mA, 28V
  • RS Stock No. 258-6372
  • Mfr. Part No. LC77AY-1
Each (In a Bag of 5000)
PHP40.862(exc. VAT)
Temporarily out of stock
Eaton IZMX16H3-P08W-1 Electronic Circuit Breaker 800A , DIN Rail
  • RS Stock No. 127-555
  • Mfr. Part No. 183480 IZMX16H3-P08W-1
Each
PHP569,674.23(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 500A 3VA2, 3 channels
  • RS Stock No. 155-918
  • Mfr. Part No. 3VA2450-5HK32-0AA0
Each
PHP194,774.98(exc. VAT)
Temporarily out of stock
Eaton IZMX/INX Electronic Circuit Breaker 630A , Fixed
  • RS Stock No. 127-703
  • Mfr. Part No. 183336 IZMX16H3-V06F-1
Each
PHP342,741.92(exc. VAT)
Temporarily out of stock
Eaton 25A Bolted Tag Fuse, A2, 660 V ac, 250V dc, 73mm
  • RS Stock No. 181-8695
  • Mfr. Part No. 25H07-660
Each
PHP1,866.12(exc. VAT)
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