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

46 of 999+
Temporarily out of stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 800A, Fixed Mount
  • RS Stock No. 231-9348
  • Mfr. Part No. 1SDA100718R1 XT6N 800 TMA 800-8000 3pFF
Each
PHP125,825.08(exc. VAT)
In Stock
Schneider Electric Motor Mechanism for use with ComPacT NSX New Generation
  • RS Stock No. 130-994
  • Mfr. Part No. LV429441
Each
PHP92,887.34(exc. VAT)
In Stock
Schneider Electric Square D QO332VS MCB, 3P, 32A, 500V AC, 10 kA Breaking Capacity
  • RS Stock No. 244-964
  • Mfr. Part No. QO332VSC10
Each
PHP18,138.68(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 250A, Fixed Mount
  • RS Stock No. 260-7902
  • Mfr. Part No. C25H3
Each
PHP69,398.32(exc. VAT)
Temporarily out of stock
ABB S802C MCB, 2P, 63A Curve C, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 141-032
  • Mfr. Part No. 2CCS882001R0634
Each
PHP8,852.91(exc. VAT)
Temporarily out of stock
Schneider Electric, Compact MCCB 3P 800A, Breaking Capacity 75 kA, Fixed Mount
  • RS Stock No. 340-921
  • Mfr. Part No. C080B3FM
Each
PHP282,027.03(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 1 Phase Distribution Board, 18 Way, 125 A
  • RS Stock No. 339-811
  • Mfr. Part No. SEA9APN18
Each
PHP20,133.84(exc. VAT)
In Stock
Better World
Schneider Electric Spreader for use with Compact Nsx 100/160/250, Easypact Cvs 100/160/250
  • RS Stock No. 221-1225
  • Mfr. Part No. LV431564
Each
PHP5,782.35(exc. VAT)
Unavailable
Schneider Electric, ComPact MCCB Molded Case Circuit Breaker 4P 100A, Fixed Mount
  • RS Stock No. 221-1061
  • Mfr. Part No. LV433836
Each
PHP197,619.52(exc. VAT)
In Stock
Schneider Electric, ComPacT MCCB 4P 250A, Breaking Capacity 40 kA, Fixed Mount
  • RS Stock No. 260-7867
  • Mfr. Part No. C25B4
Each
PHP76,261.45(exc. VAT)
In Stock
ABB S303 MCB, 3P, 63A Curve C, 415V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 200-327
  • Mfr. Part No. 2CDS383001R0634
Each
PHP32,351.50(exc. VAT)
Temporarily out of stock
Eaton xEffect MCB, 3P, 125A Curve B, 400V AC, 15 kA Breaking Capacity
  • RS Stock No. 243-233
  • Mfr. Part No. 174514 AZ-3-B125
Each
PHP32,110.17(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 160A, Breaking Capacity 6 kA, Plug In
  • RS Stock No. 240-940
  • Mfr. Part No. 191665 NZMS2-4-VX160-SVE
Each
PHP140,023.82(exc. VAT)
In Stock
Schneider Electric Removable Lock for use with Compact NB400, Compact NB600, Compact NG160, Compact NR100, Compact
  • RS Stock No. 188-1209
  • Mfr. Part No. 29370
Each
PHP2,242.65(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 50A, Fixed Mount
  • RS Stock No. 260-9496
  • Mfr. Part No. C10N3MA050
Each
PHP50,184.45(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 2P, 63A Curve C, 240V AC, 60V DC, 10 kA Breaking Capacity
  • RS Stock No. 242-993
  • Mfr. Part No. 190786 FAZ-C63/2-NA
Each
PHP17,741.24(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 50A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 428-746
  • Mfr. Part No. C11E34V050B
Each
PHP133,285.81(exc. VAT)
Temporarily out of stock
Better World
ABB, XT3N MCCB 4P 125A, Fixed Mount
  • RS Stock No. 236-6580
  • Mfr. Part No. 1SDA068063R1 XT3N 250 TMD 125A 3P+N FF
Each
PHP57,510.16(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 500A, Fixed Mount
  • RS Stock No. 260-8262
  • Mfr. Part No. C63W36M500
Each
PHP439,761.50(exc. VAT)
In Stock
ABB S803 Circuit Breaker, 3P, 32A Curve C, 440V AC, 375V DC, 15 kA Breaking Capacity
  • RS Stock No. 287-6385
  • Mfr. Part No. 2CCS883001R0324
Each
PHP9,781.06(exc. VAT)
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