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

33493 Products showing for Fuses & Circuit Breakers

117 of 999+
ABB, SACE Tmax T MCCB Molded Case Circuit Breaker 4P 800A, Fixed Mount
  • RS Stock No. 232-0130
  • Mfr. Part No. 1SDA060222R1 T6N800 FF TMA 800A
Each
PHP238,893.38(exc. VAT)
RS PRO 25A Natural Blade Car Fuse, 32V dc
  • RS Stock No. 563-475
Each (In a Pack of 10)
PHP28.835(exc. VAT)
Siemens SENTRON Adapter for use with Circuit Breaker 3VA1
  • RS Stock No. 272-0209
  • Mfr. Part No. 3VA9187-0SH20
Each
PHP5,140.04(exc. VAT)
Littelfuse 10A Red Blade Car Fuse, 32V dc
  • RS Stock No. 787-4104P
  • Mfr. Part No. 0297010.WXNV
Each (Supplied in a Bag)
PHP15.345(exc. VAT)
ABB 2CCS MCB, 2P, 125A, 50 KA Breaking Capacity
  • RS Stock No. 141-178
  • Mfr. Part No. 2CCS862001R1845
Each
PHP24,875.93(exc. VAT)
Siemens SENTRON Communication Module for use with 3VA
  • RS Stock No. 210-9419
  • Mfr. Part No. 3VA9987-0TA20
Each
PHP49,896.43(exc. VAT)
ABB System M Pro S200 MCB, 3P, 20A Curve B, 400V AC, 12V DC, 10 kA Breaking Capacity
  • RS Stock No. 288-0885
  • Mfr. Part No. 2CDS253001R0205
Each
PHP5,915.62(exc. VAT)
Eaton Eaton xEnergy Main Assembly Kit for use with NZM2-3
  • RS Stock No. 246-412
  • Mfr. Part No. 185206 XPA-NZM2-3-ARC
Each
PHP1,737.47(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 211-3725
  • Mfr. Part No. 3VA1125-3EE42-0AA0
Each
PHP26,276.56(exc. VAT)
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC Single Pole 65V ac/dc Voltage Rating DIN Rail, 5A Current Rating
  • RS Stock No. 135-839
  • Mfr. Part No. 0914316
1 Pack of 6
PHP30,490.91(exc. VAT)
Siemens 3RV1917 Cable Connector for use with Circuit Breaker 3RV1
  • RS Stock No. 272-0029
  • Mfr. Part No. 3RV19175C
Each (In a Pack of 10)
PHP330.278(exc. VAT)
SIBA 250A NH Fuse, NH1, 690V
  • RS Stock No. 893-8578
  • Mfr. Part No. 20-211-08/250A
Each (In a Pack of 3)
PHP2,212.017(exc. VAT)
Eaton 2A Bolted Tag Fuse, A2, 460 V dc, 660V ac, 73mm
  • RS Stock No. 181-8731
  • Mfr. Part No. TIA2
Each
PHP1,253.78(exc. VAT)
Littelfuse 8A Resettable Fuse, 16V
  • RS Stock No. 517-6966
  • Mfr. Part No. RGEF800
Each (In a Pack of 5)
PHP42.372(exc. VAT)
Schneider Electric ComPact NSX Interlock Kit for use with Compact NSX 400/630 circuit breaker
  • RS Stock No. 219-9412
  • Mfr. Part No. LV432614
Each
PHP18,909.01(exc. VAT)
Sensata Airpax Airpax Thermal Circuit Breaker - IEG6 Single Pole Panel Mount, 30A Current Rating
  • RS Stock No. 275-0198
  • Mfr. Part No. IEG6-1-51-30.0-A-01-V
1 Box of 5
PHP15,911.28(exc. VAT)
Wickmann PC Board Non Resettable Fuse, Radial 3.15A, 125V ac
  • RS Stock No. 226-0787
  • Mfr. Part No. 3951315000
Each (In a Pack of 10)
PHP85.50(exc. VAT)
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 30A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-572
  • Mfr. Part No. 3VA5130-5EC31-1AA0
Each
PHP27,827.72(exc. VAT)
Schneider Electric TeSys Auxiliary Contact for use with GV2/GV3 (Except GV3ME)
  • RS Stock No. 211-945
  • Mfr. Part No. GVAED0113
Each
PHP2,405.30(exc. VAT)
Siemens 5SV33 RCCB, 80A, 4 Pole, 30mA, Type B, 440V
  • RS Stock No. 328-471
  • Mfr. Part No. 5SV3347-4KK60
Each
PHP167,888.83(exc. VAT)
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