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

240 of 999+
Better World
Siemens, SENTRON MCCB 2P 125A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 271-9710
  • Mfr. Part No. 3VA11124ED220AA0
Each
PHP42,186.39(exc. VAT)
Better World
ABB, Tmax XT MCCB 4P 10A, Fixed Mount
  • RS Stock No. 236-7527
  • Mfr. Part No. 1SDA067851R1 XT2S 160 Ekip LSIG 10A FF
Each
PHP125,881.94(exc. VAT)
RS PRO Three Phase Industrial Surge Protector, 40kA, 1.35kV, DIN Rail Mount
  • RS Stock No. 101-792
Each
PHP33,954.55(exc. VAT)
ABB RCBO, 50A Current Rating, 2P Poles, Type B
  • RS Stock No. 237-5047
  • Mfr. Part No. 2CSR252001R1505
Each
PHP21,317.93(exc. VAT)
Eaton RCCB, 25A, 4 Pole, 500mA, Type AC, 230 V ac, 400 V ac
  • RS Stock No. 227-0708
  • Mfr. Part No. 264297 PFGM-25/4/05
Each
PHP15,160.76(exc. VAT)
Siemens Sentron Trip alarm switch for use with 3VA Series Circuit Breaker
  • RS Stock No. 874-4512
  • Mfr. Part No. 3VA9988-0AB11
Each
PHP3,654.09(exc. VAT)
Schneider Electric, ComPacT New Generation MCCB 3P 20A, Breaking Capacity 100 kA, Screw Mount
  • RS Stock No. 244-920
  • Mfr. Part No. BJL36020LU
Each
PHP52,146.78(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 2P 25A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-318
  • Mfr. Part No. 3VA5125-5ED21-1AA0
Each
PHP25,427.80(exc. VAT)
Eaton 500A Centred Tag Fuse, NH01, 500V ac
  • RS Stock No. 703-8765
  • Mfr. Part No. 500NHG3B
Each
PHP2,039.14(exc. VAT)
Schneider Electric Acti9 Acti9 Reflex MCB, 2P, 10A Curve B, 230V AC, 24V DC, 10 KA Breaking Capacity
  • RS Stock No. 205-370
  • Mfr. Part No. A9C61210
Each
PHP63,776.27(exc. VAT)
Siemens SENTRON 5SJ4301 MCB, 3P, 1A Curve C, 400V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 299-627
  • Mfr. Part No. 5SJ4301-7HG42
Each
PHP22,974.78(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 500A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 270-3500
  • Mfr. Part No. 3VA1450-4EF32-0AA0
Each
PHP107,318.31(exc. VAT)
Eaton 550A Bolted Tag Fuse, FMM, 500 V dc, 690V ac, 85mm
  • RS Stock No. 182-1374
  • Mfr. Part No. 550FMM
Each
PHP10,661.69(exc. VAT)
Siemens, SENTRON MCCB 2P 50A, Breaking Capacity 25 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-671
  • Mfr. Part No. 3VA5150-4ED21-0AA0
Each
PHP30,491.36(exc. VAT)
Eaton 2A Tag Fuse, 12 x 47mm, 240V
  • RS Stock No. 228-913
  • Mfr. Part No. SSD2
1 Pack of 20
PHP10,888.66(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 211-3775
  • Mfr. Part No. 3VA2110-6HL42-0AA0
Each
PHP71,097.83(exc. VAT)
Schneider Electric Acti9 A9F0 MCB, 2P, 2A Curve C, 440V AC, 125V DC, 25 kA Breaking Capacity
  • RS Stock No. 212-097
  • Mfr. Part No. A9F04202
Each
PHP8,778.36(exc. VAT)
Europa Busbar
  • RS Stock No. 849-6279
  • Mfr. Part No. ECWBB6
Each
PHP289.41(exc. VAT)
Better World
Schneider Electric iID RCCB, 63A, 2 Pole, 300mA, Type A-SI, 240V ac
  • RS Stock No. 248-3702
  • Mfr. Part No. A9R35263
Each
PHP37,586.47(exc. VAT)
ABB RCBO, 40A Current Rating, 1P Poles, Type B
  • RS Stock No. 237-5256
  • Mfr. Part No. 2CSR275151R0405
Each
PHP11,795.16(exc. VAT)
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