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

33364 Products showing for Fuses & Circuit Breakers

1658 of 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 271-9730
  • Mfr. Part No. 3VA1112-5FE42-0AA0
Each
PHP63,163.74(exc. VAT)
Temporarily out of stock
Wickmann 2.6A Resettable Fuse, 12V dc
  • RS Stock No. 174-0398
  • Mfr. Part No. RF1183-000
1 Reel of 7500
PHP154,176.45(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 110A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-425
  • Mfr. Part No. 3VA5211-6EC41-2AA0
Each
PHP152,590.72(exc. VAT)
Temporarily out of stock
Eaton 25A Cartridge Fuse, 23 x 57mm
  • RS Stock No. 255-161
  • Mfr. Part No. 25KR85
1 Pack of 20
PHP14,757.10(exc. VAT)
Temporarily out of stock
Eaton xComfort KLV Distribution Board Enclosure
  • RS Stock No. 125-096
  • Mfr. Part No. 178827 KLV-36HWS-SF
Each
PHP13,245.99(exc. VAT)
Temporarily out of stock
Siemens SENTRON Motor Mechanism
  • RS Stock No. 277-0745
  • Mfr. Part No. 3WA9111-0AF04
Each
PHP83,363.06(exc. VAT)
Currently unavailable
Schneider Electric EasyPact Electronic Circuit Breaker 100A, Fixed
  • RS Stock No. 122-409
  • Mfr. Part No. LV510667
Each
PHP16,287.27(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 160A 3VA2, 4 channels
  • RS Stock No. 157-359
  • Mfr. Part No. 3VA2216-8HM42-0AA0
Each
PHP225,761.66(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 160A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 209-4910
  • Mfr. Part No. 3VA1116-3EE42-0AA0
Each
PHP60,160.59(exc. VAT)
Temporarily out of stock
ABB Plastic Consumer Unit, IP65 1SLM006500A
  • RS Stock No. 286-4989
  • Mfr. Part No. 1SLM006500A3115
Each
PHP10,111.78(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Linergy Mounting Plate for use with AK5 Series
  • RS Stock No. 211-2279
  • Mfr. Part No. AK5PC34L
Each (In a Pack of 6)
PHP2,620.308(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3690
  • Mfr. Part No. 3VA2025-7KQ32-0AA0
Each
PHP154,833.93(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 80A, Breaking Capacity 70 kA, DIN Rail Mount
  • RS Stock No. 271-9434
  • Mfr. Part No. 3VA1180-6GD42-0AA0
Each
PHP37,773.08(exc. VAT)
Temporarily out of stock
ABB RCBO, 40A Current Rating, 1P Poles, Type C
  • RS Stock No. 237-5235
  • Mfr. Part No. 2CSR275051R2404
Each
PHP12,609.63(exc. VAT)
Temporarily out of stock
Eaton RCBO, 10A Current Rating, 4P Poles, 300mA Trip Sensitivity, Type A, Type D, FRBm6 Range
  • RS Stock No. 123-376
  • Mfr. Part No. 170967 FRBM6-D10/3N/03-A
Each
PHP16,494.17(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 125mA, 125V
  • RS Stock No. 738-2905P
  • Mfr. Part No. 0154.125DR
Each (Supplied on a Reel)
PHP136.62(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-4514
  • Mfr. Part No. 3VA2125-0KQ42-0AA0
Each
PHP167,013.65(exc. VAT)
Temporarily out of stock
ALPHA 630 DIN, Abdeckung Höhe=450mm, Bre
  • RS Stock No. 229-9882
  • Mfr. Part No. 8GK9601-3KK31
Each (In a Pack of 10)
PHP7,774.493(exc. VAT)
Temporarily out of stock
Siemens 2A Centred Tag Fuse, NH000, 690V
  • RS Stock No. 210-6905
  • Mfr. Part No. 3NA6802-6
Each (In a Pack of 3)
PHP4,587.617(exc. VAT)
Temporarily out of stock
Eaton Fuse Holder Installation Gauge
  • RS Stock No. 255-352
  • Mfr. Part No. 263151 Z-D02-D01/PE-10
1 Pack of 12
PHP239.86(exc. VAT)
1
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