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

227 of 999+
Littelfuse SMD Non Resettable Fuse 2.5A, 32V
  • RS Stock No. 624-3067
  • Mfr. Part No. 1206SFS250F/32-2
Each (In a Pack of 10)
PHP69.20(exc. VAT)
Better World
Schneider Electric iC60 RCD, 25A, 1+N Pole, 10mA
  • RS Stock No. 776-8722
  • Mfr. Part No. A9V10225
Each
PHP17,428.83(exc. VAT)
Siemens, SENTRON MCCB 4P 110A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-428
  • Mfr. Part No. 3VA5211-6ED41-2AA0
Each
PHP150,673.70(exc. VAT)
Eaton Busbar, 600V ac, 60mm Pitch
  • RS Stock No. 178-8004
  • Mfr. Part No. 101451 BBA0-25
Each
PHP3,310.91(exc. VAT)
Schurter OGN-SMD Series Thermoplastic Fuse Cover for 5 x 20mm Fuse
  • RS Stock No. 269-3797
  • Mfr. Part No. 0853.0571
Each
PHP56.27(exc. VAT)
Eaton RCCB, 25A, 1+N Pole, 30mA, Type AC, 230V ac
  • RS Stock No. 667-0605
  • Mfr. Part No. 235390 PFIM-25/2/003-MW
Each
PHP9,814.43(exc. VAT)
ABB ON-OFF Switch Circuit Trip
  • RS Stock No. 189-5646
  • Mfr. Part No. 703005
Each
PHP1,563.28(exc. VAT)
Better World
Siemens SENTRON Electronic Circuit Breaker 160A 3VA2, 3 channels
  • RS Stock No. 157-365
  • Mfr. Part No. 3VA2216-8JQ32-0AA0
Each
PHP233,139.72(exc. VAT)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 160A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 271-9767
  • Mfr. Part No. 3VA1116-4ED22-0AA0
Each
PHP45,375.72(exc. VAT)
Sensata Airpax Airpax Thermal Circuit Breaker - IEG1 Single Pole Panel Mount, 20A Current Rating
  • RS Stock No. 275-0193
  • Mfr. Part No. IEG1-1-72-20.0-A-21-V
1 Box of 5
PHP14,719.32(exc. VAT)
Legrand MCB, 16A, 4 Pole, 400V
  • RS Stock No. 255-2320
  • Mfr. Part No. 408126
Each
PHP16,922.10(exc. VAT)
Siemens 630A Tag Fuse, NH3, 690V
  • RS Stock No. 608-732
  • Mfr. Part No. 3NC3236-1U
1 Pack of 3
PHP37,860.83(exc. VAT)
Europa RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type C
  • RS Stock No. 153-3459
  • Mfr. Part No. EUBLMC16C30A
Each
PHP4,116.06(exc. VAT)
Schurter Surface Mount Fuse 630mA, 250V ac
  • RS Stock No. 270-7938
  • Mfr. Part No. 3403.0164.11
Each
PHP50.99(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4535
  • Mfr. Part No. 3VA2125-6JP36-0AA0
Each
PHP100,709.10(exc. VAT)
Siemens SENTRON Busbar, 1000V
  • RS Stock No. 202-7175
  • Mfr. Part No. 5ST3666-0HG
Each (In a Pack of 10)
PHP700.985(exc. VAT)
Eaton 25A DII Bottle Fuse, E27 Thread Size, gG, 500V ac
  • RS Stock No. 181-8474
  • Mfr. Part No. 25D27
1 Box of 25
PHP3,286.65(exc. VAT)
Eaton 24V ac/dc Shunt Trip Shunt trip for use with N(S)1(-4) Series, NZM1(-4) Series
  • RS Stock No. 454-8203
  • Mfr. Part No. 259708 NZM1-XA24AC/DC
Each
PHP8,956.69(exc. VAT)
Siemens, SENTRON MCCB 3P 1kA, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 270-4782
  • Mfr. Part No. 3VA2510-6HM32-0AA0
Each
PHP454,778.85(exc. VAT)
ABB Tmax XT Trip Unit for use with Tmax XT
  • RS Stock No. 237-6288
  • Mfr. Part No. 1SDA067229R1
Each
PHP16,455.12(exc. VAT)
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