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

33476 Products showing for Fuses & Circuit Breakers

96 of 999+
In Stock
Siemens 125A Centred Tag Fuse, NH1, 690V
  • RS Stock No. 210-6883
  • Mfr. Part No. 3NA3132-6
Each (In a Pack of 3)
PHP4,073.957(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 4P 100A, Breaking Capacity 40 KA
  • RS Stock No. 119-651
  • Mfr. Part No. C10B44B100
Each
PHP243,108.17(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 55 kA
  • RS Stock No. 209-6787
  • Mfr. Part No. 3VA1125-5ED42-0AA0
Each
PHP30,632.21(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-4512
  • Mfr. Part No. 3VA2125-0KQ32-0AA0
Each
PHP143,580.98(exc. VAT)
In Stock
Phoenix Contact Surge Protector, 40kA, DIN Rail Mount
  • RS Stock No. 201-5507
  • Mfr. Part No. 2907874
Each
PHP12,494.57(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA2, 4 channels Type N
  • RS Stock No. 157-174
  • Mfr. Part No. 3VA2225-7HL42-0AA0
Each
PHP174,116.84(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 100A, Fixed Mount
  • RS Stock No. 260-7454
  • Mfr. Part No. C10V35E100
Each
PHP178,133.73(exc. VAT)
In Stock
ABB Tmax XT Motor Operator for use with XT2, XT4
  • RS Stock No. 237-6087
  • Mfr. Part No. 1SDA066469R1 MOE-E XT2-XT4 24VDC
Each
PHP47,909.23(exc. VAT)
Temporarily out of stock
Better World
ABB, XT4S MCCB 3P 20A, Fixed Mount
  • RS Stock No. 236-6679
  • Mfr. Part No. 1SDA068300R1 XT4S 160 TMD 20A FF
Each
PHP42,608.76(exc. VAT)
In Stock
Schneider Electric Surge Arrester, 40kA, 350V ac, Clip-On Mount
  • RS Stock No. 288-7108
  • Mfr. Part No. A9L40301
Each
PHP58,600.94(exc. VAT)
Temporarily out of stock
SENTRON for use with 3VA51 Series
  • RS Stock No. 263-546
  • Mfr. Part No. 3VA9138-0DK72
Each
PHP25,145.64(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-3832
  • Mfr. Part No. 3VA2063-5JQ36-0AA0
Each
PHP127,906.24(exc. VAT)
Temporarily out of stock
Eaton AFDD, 10A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type B, AFDD+ Range
  • RS Stock No. 146-2816
  • Mfr. Part No. 187168 AFDD-10/2/B/003-A
Each
PHP16,589.27(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact MCCB 3P 45A, Breaking Capacity 65 kA, Clip-On
  • RS Stock No. 346-812
  • Mfr. Part No. BJF36045
Each
PHP91,141.58(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 25A, Breaking Capacity 25 kA, Panel Mount
  • RS Stock No. 654-806
  • Mfr. Part No. IL0253P25
Each
PHP25,557.35(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 1P, 3A Curve D, 240V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 247-132
  • Mfr. Part No. 102141 FAZ-D3/1-RT
Each
PHP6,224.10(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 80A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 147-570
  • Mfr. Part No. 3VA5180-6EC31-1AA0
Each
PHP36,978.60(exc. VAT)
In Stock
ABB Copper Copper Bar for Use with TriLine
  • RS Stock No. 237-6597
  • Mfr. Part No. 2CPX061360R9999
1 Box of 1
PHP158,428.25(exc. VAT)
In Stock
Schurter PC Board Non Resettable Fuse, Radial 50mA, 250V ac
  • RS Stock No. 284-5192
  • Mfr. Part No. 0034.6602
Each (In a Pack of 10)
PHP55.57(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 70A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 147-559
  • Mfr. Part No. 3VA5170-6EC31-1AA0
Each
PHP36,978.60(exc. VAT)
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