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

223 of 999+
Better World
ABB, XT4N MCCB 4P 100A, Fixed Mount
  • RS Stock No. 236-6619
  • Mfr. Part No. 1SDA068155R1 XT4N 160 Ekip LSI 100A FF
Each
PHP128,889.58(exc. VAT)
Schneider Electric Earth Bar L. 450mm x W. 13mm x H. 12mm
  • RS Stock No. 276-8807
  • Mfr. Part No. LVS04200
Each
PHP5,618.38(exc. VAT)
Schneider Electric, C160 MCCB 4P 1.6kA, Breaking Capacity 415 V ac, Fixed Mount
  • RS Stock No. 335-133
  • Mfr. Part No. C160H4FM
Each
PHP728,637.04(exc. VAT)
Schneider Electric, ComPacT MCCB 2P 25A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 428-738
  • Mfr. Part No. C10F2TM025
Each
PHP46,492.31(exc. VAT)
Eaton 25A Bolted Tag Fuse, F2, 550V ac
  • RS Stock No. 181-8514
  • Mfr. Part No. ESD25
1 Box of 20
PHP10,439.42(exc. VAT)
Better World
Siemens Surge Protector, Clip-On Mount
  • RS Stock No. 203-2697
  • Mfr. Part No. 3RT2936-1JL00
Each
PHP1,382.35(exc. VAT)
Schneider Electric, ComPacT New Generation MCCB 3P 125A, Fixed Mount
  • RS Stock No. 260-7740
  • Mfr. Part No. C16B3TM125
Each
PHP53,618.35(exc. VAT)
Eaton, xEnergy MCCB 3P 40A, Breaking Capacity 50 kA
  • RS Stock No. 454-8095
  • Mfr. Part No. 259081 NZMN1-A40
Each
PHP31,870.22(exc. VAT)
Schneider Electric Acti9 3 Phase Distribution Board, 22 Way, 250 A
  • RS Stock No. 339-634
  • Mfr. Part No. SEA9BPN25016S6
Each
PHP727,820.32(exc. VAT)
Finder Busbar, 6 A - 250V
  • RS Stock No. 776-1538
  • Mfr. Part No. 093.16.0
Each
PHP219.07(exc. VAT)
Eaton Phase Busbar 1 Phase Busbar, 277V
  • RS Stock No. 230-707
  • Mfr. Part No. 121981 BB-UL-18/1P-1M/57
Each
PHP2,107.39(exc. VAT)
Siemens SENTRON 5SY8 MCB, 2P, 6A Curve D, 230V AC, 60V DC, 50 kA Breaking Capacity
  • RS Stock No. 610-500
  • Mfr. Part No. 5SY8506-8
Each
PHP8,364.60(exc. VAT)
Better World
ABB, XT3S MCCB 4P 200A, Fixed Mount
  • RS Stock No. 236-6647
  • Mfr. Part No. 1SDA068227R1 XT3S 250 TMD 200A 3P+N FF
Each
PHP57,599.82(exc. VAT)
Phoenix Contact AZK 35 Busbar
  • RS Stock No. 248-2136
  • Mfr. Part No. 0702997
Each (In a Pack of 10)
PHP817.496(exc. VAT)
Schneider Electric Horizontal Distribution Length, 3m, 63A, Canalis Series
  • RS Stock No. 207-228
  • Mfr. Part No. KNA63ED4301
Each
PHP19,995.51(exc. VAT)
Schneider Electric, ComPacT MCCB 4P 25A, Fixed Mount
  • RS Stock No. 260-9412
  • Mfr. Part No. C10B4TM025
Each
PHP44,810.69(exc. VAT)
Siemens SENTRON Adapter for use with 3VA11
  • RS Stock No. 161-878
  • Mfr. Part No. 3VA9157-0LF10
Each
PHP6,756.37(exc. VAT)
Schneider Electric MasterPact Door for use with MasterPact MTZ1 Circuit Breaker
  • RS Stock No. 288-1515
  • Mfr. Part No. LV833857SP
Each
PHP9,461.24(exc. VAT)
Siemens 10A D01 Neozed Fuse, gR, 400V
  • RS Stock No. 202-7052
  • Mfr. Part No. 5SE1310
Each (In a Pack of 10)
PHP1,035.891(exc. VAT)
Sensata Airpax Airpax Thermal Circuit Breaker - R21 2 Pole Panel Mount, 10A Current Rating
  • RS Stock No. 275-0458
  • Mfr. Part No. R21-2-10.0A-B06CV-V
1 Box of 5
PHP15,470.33(exc. VAT)
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