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

33502 Products showing for Fuses & Circuit Breakers

220 of 999+
Siemens 224A Tag Fuse, NH3mm, 1.5kV, 210mm
  • RS Stock No. 627-156
  • Mfr. Part No. 3NE5426-0C
1 Pack of 2
PHP37,567.33(exc. VAT)
Schneider Electric, ComPacT MCCB 4P 250A, Fixed Mount
  • RS Stock No. 288-7184
  • Mfr. Part No. C256TM250
Each
PHP46,141.33(exc. VAT)
Better World
Schneider Electric MCCB, Clip-On
  • RS Stock No. 178-7846
  • Mfr. Part No. LV426802
Each
PHP18,396.93(exc. VAT)
Schneider Electric, ComPacT New Generation MCCB 3P 160A, Fixed Mount
  • RS Stock No. 260-7752
  • Mfr. Part No. C16F32D160
Each
PHP82,400.57(exc. VAT)
Siemens, SENTRON MCCB 4P 630A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 270-4819
  • Mfr. Part No. 3VA2563-6KQ42-0AA0
Each
PHP276,600.98(exc. VAT)
Europa EUR1 RCCB, 80A, 4 Pole, 30mA, Type A, 230V ac
  • RS Stock No. 210-4761
  • Mfr. Part No. EUR180.30/4A
Each
PHP5,223.20(exc. VAT)
ABB System Pro M Compact S200 M UC MCB, 2P, 25A Curve C, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 202-914
  • Mfr. Part No. 2CDS272061R0254
Each
PHP16,054.43(exc. VAT)
Better World
Schneider Electric Compact Nsx, Compact Nsx Dc Plug In Kit for use with Compact Nsx 400/630
  • RS Stock No. 221-1251
  • Mfr. Part No. LV432538
Each
PHP55,867.07(exc. VAT)
Littelfuse SMD Non Resettable Fuse 10A, 125V
  • RS Stock No. 895-1593P
  • Mfr. Part No. 0448010.MR
Each (Supplied on a Reel)
PHP94.864(exc. VAT)
Schneider Electric, ComPact MCCB Molded Case Circuit Breaker 3P 40A, Fixed Mount
  • RS Stock No. 221-0964
  • Mfr. Part No. LV429882
Each
PHP112,683.89(exc. VAT)
Schneider Electric, ComPacT New Generation MCCB 3P 100A, Fixed Mount
  • RS Stock No. 260-7778
  • Mfr. Part No. C16H3MA100
Each
PHP71,325.10(exc. VAT)
Better World
Siemens 5SV3 RCCB, 25A, 4 Pole, 500mA, Type B, 400V ac
  • RS Stock No. 211-9721
  • Mfr. Part No. 5SV3742-4
Each
PHP50,220.02(exc. VAT)
Siemens, SENTRON MCCB 1P 60A, Breaking Capacity 5 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-677
  • Mfr. Part No. 3VA5160-4ED11-0AA0
Each
PHP16,957.89(exc. VAT)
Siemens 125A NH Fuse, NH00, 500V ac
  • RS Stock No. 397-430
  • Mfr. Part No. 3NA6832
Each (In a Pack of 3)
PHP612.423(exc. VAT)
Schneider Electric, ComPacT NSX Circuit breaker 1P 30A, Breaking Capacity 25 kA, Busbar System
  • RS Stock No. 654-189
  • Mfr. Part No. IL0301P252
Each
PHP12,541.62(exc. VAT)
Siemens 1 Phase Surge Protector, 25kA, DIN Rail Mount
  • RS Stock No. 211-0191
  • Mfr. Part No. 5SD7463-0
Each
PHP21,596.56(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 25A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 345-318
  • Mfr. Part No. C11B44V025B
Each
PHP157,018.02(exc. VAT)
Eaton 250A Tag Fuse, 56 x 224mm, 1.5kV
  • RS Stock No. 262-572
  • Mfr. Part No. SD2-D-PV
1 Pack of 3
PHP9,180.09(exc. VAT)
ABB Cover for use with Modular Circuit Breakers
  • RS Stock No. 534-8818
  • Mfr. Part No. 12422 M124220000
Each
PHP472.99(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 125A, Fixed Mount
  • RS Stock No. 260-7689
  • Mfr. Part No. C12F3TM125L
Each
PHP48,305.70(exc. VAT)
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