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

154 of 999+
Better World
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 55 kA
  • RS Stock No. 210-1612
  • Mfr. Part No. 3VA1110-5ED36-0AA0
Each
PHP35,541.69(exc. VAT)
ABB 4 Way Plastic Consumer Unit, 63A, IP65 Mistral65
  • RS Stock No. 811-1880
  • Mfr. Part No. 1SL1200A00 65P04X12
Each
PHP1,644.98(exc. VAT)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 20A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9812
  • Mfr. Part No. 3VA1120-3ED46-0AA0
Each
PHP28,348.59(exc. VAT)
Littelfuse 150A Orange Bolt Down Car Fuse, 32V dc
  • RS Stock No. 787-4394
  • Mfr. Part No. 0298150.ZXEH
Each
PHP380.25(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 125A, Breaking Capacity 25 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-274
  • Mfr. Part No. 3VA5112-6ED21-1AA0
Each
PHP57,530.50(exc. VAT)
Schneider Electric Resi9 R9PF MCB, 3P, 20A, 400V AC, 3000 A Breaking Capacity
  • RS Stock No. 276-8968
  • Mfr. Part No. R9PFC720
Each
PHP7,434.03(exc. VAT)
Littelfuse 10A Resettable Fuse, 16V
  • RS Stock No. 506-961
  • Mfr. Part No. RGEF1000
Each (In a Pack of 5)
PHP61.776(exc. VAT)
Eaton 600A Tag Fuse, 101 x 101mm
  • RS Stock No. 261-691
  • Mfr. Part No. TPL-CZ
Each
PHP13,158.68(exc. VAT)
Siemens 200A Centred Tag Fuse, NH1, 500V ac
  • RS Stock No. 203-2129
  • Mfr. Part No. 3NA7140
Each (In a Pack of 3)
PHP1,107.503(exc. VAT)
Siemens SENTRON 3 Phase Busbar
  • RS Stock No. 187-5202
  • Mfr. Part No. 5ST3740-1
Each
PHP6,993.23(exc. VAT)
Better World
Schneider Electric RCBO, 32A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3338
  • Mfr. Part No. A9DV3632
Each
PHP20,761.49(exc. VAT)
Siemens, SENTRON MCCB 3P 150A, Breaking Capacity 65 kA, Fixed Mount
  • RS Stock No. 147-383
  • Mfr. Part No. 3VA5215-0BB31-0AA0
Each
PHP58,931.75(exc. VAT)
Siemens RCBO, 6A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type B, SENTRON Range
  • RS Stock No. 627-034
  • Mfr. Part No. 5SU1354-6GV06
1 Pack of 36
PHP268,144.92(exc. VAT)
Schneider Electric, PowerPact MCCB 3P 225A, Breaking Capacity 14 kA, DIN Rail Mount
  • RS Stock No. 341-442
  • Mfr. Part No. NJDF36225TW
Each
PHP223,887.82(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 209-5187
  • Mfr. Part No. 3VA2216-5MN32-0AA0
Each
PHP61,394.05(exc. VAT)
Schurter SMD Non Resettable Fuse 2A, 250 V ac, 125V dc
  • RS Stock No. 703-2758
  • Mfr. Part No. 3404.2419.22
Each (In a Bag of 10)
PHP72.187(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 210-1725
  • Mfr. Part No. 3VA2125-5HN36-0AA0
Each
PHP62,486.96(exc. VAT)
Schurter PC Board Non Resettable Fuse, Axial 500mA, 125V ac/dc
  • RS Stock No. 173-9669
  • Mfr. Part No. 7010.7050.13
Each (In a Bag of 100)
PHP72.187(exc. VAT)
ABB Emax 2, Tmax XT Terminal for use with Circuit Breaker
  • RS Stock No. 231-9311
  • Mfr. Part No. 1SDA073906R1 E6.2-XT7/M 10pz
Each
PHP4,797.92(exc. VAT)
Schneider Electric, PowerPact MCCB 4P 50A, Breaking Capacity 18 kA, Clip-On
  • RS Stock No. 288-7140
  • Mfr. Part No. BGF46050
Each
PHP30,538.51(exc. VAT)
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