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

1627 of 999+
Schneider Electric, ComPacT New generation MCCB 4P 100A, Breaking Capacity 440 V, Fixed Mount
  • RS Stock No. 205-221
  • Mfr. Part No. C25F47E100
Each
PHP465,561.69(exc. VAT)
Siemens SENTRON Connection Kit
  • RS Stock No. 277-0827
  • Mfr. Part No. 3WA9111-0AV28
Each
PHP27,705.68(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-4046
  • Mfr. Part No. 3VA2110-8KQ36-0AA0
Each
PHP143,169.08(exc. VAT)
Eaton 40A Cartridge Fuses, 63.5 x 359mm
  • RS Stock No. 254-751
  • Mfr. Part No. 24OEGMA40
1 Pack of 3
PHP78,098.38(exc. VAT)
Siemens SENTRON Option Plug
  • RS Stock No. 277-0898
  • Mfr. Part No. 3WA9111-0EB02
Each
PHP9,975.88(exc. VAT)
Better World
Siemens 5sV3 RCCB, 80A, 4 Pole, 30mA, Type A, 500V ac
  • RS Stock No. 211-9657
  • Mfr. Part No. 5SV3357-6
Each
PHP117,288.18(exc. VAT)
Schneider Electric, ComPacT MCCB 4P 100A, Fixed Mount
  • RS Stock No. 260-7613
  • Mfr. Part No. C11F4TM100L
Each
PHP47,297.99(exc. VAT)
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 4P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-321
  • Mfr. Part No. 3VA6140-7HN41-2AA0
Each
PHP105,567.70(exc. VAT)
Schurter Surface Mount Fuse 6.3A, 32V ac
  • RS Stock No. 270-7968
  • Mfr. Part No. 3413.0224.22
Each
PHP37.51(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 32A, Breaking Capacity 70 kA
  • RS Stock No. 210-1654
  • Mfr. Part No. 3VA1132-6ED42-0AA0
Each
PHP24,221.44(exc. VAT)
Better World
ABB, Tmax XT MCCB 4P 63A, Fixed Mount
  • RS Stock No. 236-6832
  • Mfr. Part No. 1SDA068582R1 XT4L 160 Ekip LSI 63A FF
Each
PHP214,165.75(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4757
  • Mfr. Part No. 3VA2163-7KP36-0AA0
Each
PHP124,927.66(exc. VAT)
Siemens, SENTRON MCCB 4P 150A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-901
  • Mfr. Part No. 3VA5215-5EC41-0AA0
Each
PHP117,244.89(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3700
  • Mfr. Part No. 3VA2025-8HM36-0AA0
Each
PHP88,581.09(exc. VAT)
Siemens SENTRON Busbar Connector, 450V
  • RS Stock No. 210-1752
  • Mfr. Part No. 5ST3793-3
Each (In a Pack of 3)
PHP2,379.49(exc. VAT)
Hinode Electric Co Ltd 20A Bolted Tag Fuse, 61mm
  • RS Stock No. 103-4241
  • Mfr. Part No. 660GH-020
Each (In a Pack of 5)
PHP1,041.382(exc. VAT)
Siemens 100A Tag Fuse, NH2, 690 / 440V ac/dc
  • RS Stock No. 144-083
  • Mfr. Part No. 3NA6230-6
1 Pack of 3
PHP11,240.40(exc. VAT)
Schurter SMD Non Resettable Fuse 250mA, 250 V ac, 125V dc
  • RS Stock No. 703-2697
  • Mfr. Part No. 3403.0160.24
Each (In a Bag of 10)
PHP39.22(exc. VAT)
Eaton xE?ect - FRCmM-NA RCCB, 40A, 2 Pole, 30mA, 240/415V ac
  • RS Stock No. 120-295
  • Mfr. Part No. 167120 FRCMM-40/2/003-G/A-NA
Each
PHP15,260.32(exc. VAT)
ABB, Tmax XT MCCB 3P 25A, Fixed Mount
  • RS Stock No. 237-6227
  • Mfr. Part No. 1SDA067060R1 XT2N 160 Ekip I 25A FF
Each
PHP49,101.11(exc. VAT)
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