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

1640 of 999+
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4707
  • Mfr. Part No. 3VA2163-0MQ36-0AA0
Each
PHP113,835.21(exc. VAT)
Hager NGT MCB, 3P, 40A, 415V AC, 10 kA Breaking Capacity
  • RS Stock No. 144-4790
  • Mfr. Part No. NGT340
Each
PHP16,000.13(exc. VAT)
Schurter SMD Non Resettable Fuse 4A, 63 V ac, 125V dc
  • RS Stock No. 173-7877
  • Mfr. Part No. 3410.0240.01
Each (In a Bag of 100)
PHP174.557(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-4053
  • Mfr. Part No. 3VA2116-0HM32-0AA0
Each
PHP131,504.16(exc. VAT)
Siemens, SENTRON MCCB 4P 175A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 148-029
  • Mfr. Part No. 3VA5217-7EF41-2AA0
Each
PHP175,080.03(exc. VAT)
Eaton PC Board Non Resettable Fuse, Radial 5A, 250V ac
  • RS Stock No. 169-9502
  • Mfr. Part No. SR-5-5A-BK
Each (In a Bag of 200)
PHP38.175(exc. VAT)
Better World
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 2.5 kA
  • RS Stock No. 245-524
  • Mfr. Part No. 3VA6140-7KT31-0AA0
Each
PHP157,618.44(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-3831
  • Mfr. Part No. 3VA2063-5JP46-0AA0
Each
PHP85,959.37(exc. VAT)
Better World
Siemens SENTRON Electronic Circuit Breaker 160A 3VA2, 3 channels Type N
  • RS Stock No. 157-356
  • Mfr. Part No. 3VA2216-8HL32-0AA0
Each
PHP144,605.66(exc. VAT)
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA2, 4 channels
  • RS Stock No. 157-316
  • Mfr. Part No. 3VA2225-7HM42-0AA0
Each
PHP200,677.00(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3597
  • Mfr. Part No. 3VA2010-7KQ46-0AA0
Each
PHP192,233.18(exc. VAT)
Schneider Electric Unica Unica system+ MCB
  • RS Stock No. 357-199
  • Mfr. Part No. INS44216
Each
PHP13,503.87(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-4527
  • Mfr. Part No. 3VA2125-6HK42-0AA0
Each
PHP72,082.77(exc. VAT)
Schurter PC Board Non Resettable Fuse, Radial 63mA, 250V ac
  • RS Stock No. 173-9768
  • Mfr. Part No. 0034.6603
Each (In a Bag of 100)
PHP52.551(exc. VAT)
Sensata Airpax Airpax Thermal Circuit Breaker - LEG6 Single Pole Panel Mount, 15A Current Rating
  • RS Stock No. 275-0339
  • Mfr. Part No. LEG6-1-62-15.0-01-V
Each
PHP4,011.48(exc. VAT)
Siemens 224A Centred Tag Fuse, NH2, 500V ac
  • RS Stock No. 203-1996
  • Mfr. Part No. 3NA6242
Each (In a Pack of 3)
PHP2,539.33(exc. VAT)
Littelfuse Non-Resettable Wire Ended Fuse 750mA, 125V ac/dc
  • RS Stock No. 738-3052P
  • Mfr. Part No. 0251.750MRT1L
Each (Supplied in a Bag)
PHP36.963(exc. VAT)
ABB Plastic Consumer Unit, IP65 1SLM006500A
  • RS Stock No. 286-4960
  • Mfr. Part No. 1SLM006500A2215
Each
PHP7,843.88(exc. VAT)
Schurter SMD Non Resettable Fuse 750mA, 125V ac/dc
  • RS Stock No. 173-7868
  • Mfr. Part No. 3410.0029.01
Each (In a Bag of 100)
PHP140.728(exc. VAT)
Lovato 1 Phase Surge Protector, 50kA
  • RS Stock No. 216-8298
  • Mfr. Part No. SG21PA300
Each
PHP7,202.95(exc. VAT)
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