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

280 of 999+
Temporarily out of stock
Better World
Schneider Electric Surge Protector, 2kA, DIN Rail Mount
  • RS Stock No. 776-3874
  • Mfr. Part No. A9L16299
Each
PHP43,795.35(exc. VAT)
Temporarily out of stock
Siemens ALPHA Terminal Element for use with Terminal Block
  • RS Stock No. 210-9435
  • Mfr. Part No. 8GB2052-1
Each
PHP2,127.80(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3840
  • Mfr. Part No. 3VA2063-6HM36-0AA0
Each
PHP83,775.57(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Acti9 iIG40 RCCB, 25A, 3+N Pole, 300mA, Type AC, 380 → 415V ac
  • RS Stock No. 238-3474
  • Mfr. Part No. A9R77725
Each
PHP23,636.87(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 1P 125A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 271-9709
  • Mfr. Part No. 3VA11124ED120AA0
Each
PHP24,450.86(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 20A, Breaking Capacity 55 kA
  • RS Stock No. 210-1635
  • Mfr. Part No. 3VA1120-5ED42-0AA0
Each
PHP30,944.79(exc. VAT)
Being discontinued
RS PRO PC Board Non Resettable Fuse, Axial 1A, 250V ac
  • RS Stock No. 764-9548
Each (In a Pack of 10)
PHP41.372(exc. VAT)
In Stock
TE Connectivity for use with Circuit Breaker
  • RS Stock No. 782-7824
  • Mfr. Part No. 1-1423696-6
Each (In a Pack of 5)
PHP152.856(exc. VAT)
In Stock
Better World
Schneider Electric 2P Switch Disconnector Circuit Trip for use with Acti 9 Isobar A type Distribution Boards
  • RS Stock No. 806-7307
  • Mfr. Part No. SEA91252
Each
PHP3,723.25(exc. VAT)
Temporarily out of stock
Eaton 400A Bolted Tag Fuse, 415V ac, 92mm
  • RS Stock No. 181-8598
  • Mfr. Part No. 400PJ31-7
1 Box of 5
PHP26,191.97(exc. VAT)
In Stock
Better World
Schneider Electric iC60 RCD, 25A, 30mA
  • RS Stock No. 734-9703
  • Mfr. Part No. A9Q31225
Each
PHP25,459.92(exc. VAT)
Temporarily out of stock
Siemens 125A Tag Fuse, 103mm, 690V, 75.8mm
  • RS Stock No. 608-787
  • Mfr. Part No. 3NC2611-0MK
1 Pack of 3
PHP8,364.60(exc. VAT)
In Stock
ifm electronic Protection Module for use with Uninterrupted Power Supply
  • RS Stock No. 100-570
  • Mfr. Part No. DF1220
Each
PHP5,724.04(exc. VAT)
In Stock
Eaton RCBO, 6A Current Rating, 4P Poles, 30mA Trip Sensitivity, Type A, Type C, FRBm6 Range
  • RS Stock No. 123-713
  • Mfr. Part No. 170996 FRBM6-C6/3N/003-A
Each
PHP16,267.81(exc. VAT)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 3P 32A, Fixed Mount
  • RS Stock No. 236-6600
  • Mfr. Part No. 1SDA068115R1 XT4N 160 MA 32 FF
Each
PHP31,943.50(exc. VAT)
Currently unavailable
Schurter SMD Non Resettable Fuse 4A, 250 V ac, 125V dc
  • RS Stock No. 754-6308
  • Mfr. Part No. 3405.0172.24
Each (In a Pack of 10)
PHP37.514(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT Terminal Shield for use with Circuit Breaker
  • RS Stock No. 214-758
  • Mfr. Part No. LV433693
Each
PHP5,728.73(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 25A, Fixed Mount
  • RS Stock No. 260-9526
  • Mfr. Part No. C10R36M025
Each
PHP162,117.48(exc. VAT)
In Stock
Murrelektronik Limited Mico Pro Circuit Breaker
  • RS Stock No. 285-5871
  • Mfr. Part No. 9000-41011-0200000
Each
PHP3,001.39(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric - Easy Series, EasyPact CVS Circuit breaker 4P 25A, Breaking Capacity 36kA, Fixed Mount
  • RS Stock No. 260-9737
  • Mfr. Part No. LV510341
Each
PHP37,790.64(exc. VAT)
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