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

33476 Products showing for Fuses & Circuit Breakers

68 of 999+
Schneider Electric, ComPacT NSX MCCB 3P 50A, Breaking Capacity 25 kA, Panel Mount
  • RS Stock No. 654-701
  • Mfr. Part No. IL0503P25
Each
PHP25,557.35(exc. VAT)
Siemens 315A Centred Tag Fuse, NH2L, 1kV
  • RS Stock No. 230-2996
  • Mfr. Part No. 3NE1330-4D
Each (In a Pack of 2)
PHP19,234.37(exc. VAT)
ABB 100A Tag Fuse, 150 x 40 x 72mm, 500V
  • RS Stock No. 251-3474
  • Mfr. Part No. 1SCA022627R5380
1 Box of 3
PHP5,090.38(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 50A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 874-4326
  • Mfr. Part No. 3VA1150-4EF36-0AA0
Each
PHP25,232.98(exc. VAT)
Schneider Electric ComPact Mechanical Interlock Kit for use with ComPact NSX Circuit Breaker
  • RS Stock No. 247-1754
  • Mfr. Part No. 32609
Each
PHP116,627.59(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 50A, Breaking Capacity 55 kA
  • RS Stock No. 209-7000
  • Mfr. Part No. 3VA1150-5ED32-0AA0
Each
PHP23,853.99(exc. VAT)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 50A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 271-9604
  • Mfr. Part No. 3VA10504ED360AA0
Each
PHP21,417.31(exc. VAT)
Europa Busbar
  • RS Stock No. 849-6260
  • Mfr. Part No. ECWBB4
Each
PHP211.46(exc. VAT)
Siemens Surge Arrester
  • RS Stock No. 226-1629
  • Mfr. Part No. 5SD7481-1
Each
PHP30,217.05(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 50A, Breaking Capacity 10 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-444
  • Mfr. Part No. 3VA5150-6ED31-0AA0
Each
PHP28,802.51(exc. VAT)
Siemens 63A NH Fuse, NH000, 500V ac
  • RS Stock No. 396-067
  • Mfr. Part No. 3NA3822
1 Pack of 3
PHP6,500.56(exc. VAT)
RS PRO Industrial Surge Protector, 40kA, 5.3kV, DIN Rail Mount
  • RS Stock No. 101-776
Each
PHP6,856.32(exc. VAT)
Siemens, Sentron MCCB Molded Case Circuit Breaker 3P 1kA, Breaking Capacity 35 kA
  • RS Stock No. 249-120
  • Mfr. Part No. 3VA6610-6JP32-0AA0
Each
PHP571,825.02(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 1kA, Breaking Capacity 34 kA, Fixed Mount
  • RS Stock No. 127-171
  • Mfr. Part No. 179329 N4-4-1000-S15-PV-NA
Each
PHP565,004.18(exc. VAT)
ABB S800U MCB, 4P, 100A Curve K, 240V AC, 50 kA Breaking Capacity
  • RS Stock No. 140-856
  • Mfr. Part No. 2CCS864017R0637
Each
PHP55,888.19(exc. VAT)
Siemens SENTRON 5SY5 MCB, 4P, 16A Curve C, 400V AC, 880V DC, 15 kA Breaking Capacity
  • RS Stock No. 610-633
  • Mfr. Part No. 5SY5416-7
Each
PHP26,047.66(exc. VAT)
ABB, Tmax MCCB 3P 320A, Fixed Mount
  • RS Stock No. 237-5961
  • Mfr. Part No. 1SDA054320R1 T5N400 FF PR222-LSI 320A
Each
PHP79,834.83(exc. VAT)
Littelfuse 7.5A Brown Blade Car Fuse, 32V dc
  • RS Stock No. 787-4237
  • Mfr. Part No. 029707.5L
Each (In a Pack of 5)
PHP25.146(exc. VAT)
Littelfuse 250A Panel Mount Fuse Block
  • RS Stock No. 878-3946
  • Mfr. Part No. 02980900Z
Each
PHP1,109.59(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 400A, Fixed Mount
  • RS Stock No. 260-8096
  • Mfr. Part No. C40F3TM400D
Each
PHP231,936.89(exc. VAT)
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