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

262 of 999+
Temporarily out of stock
ABB, SACE Tmax XT MCCB Molded Case Circuit Breaker 3P 160A, Breaking Capacity 3 kA, Fixed Mount
  • RS Stock No. 231-9295
  • Mfr. Part No. 1SDA066809R1 XT1B 160 TMD 160A FF
Each
PHP24,538.93(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Straight Busbar Trunking, 3m, 40A, Canalis Series
  • RS Stock No. 211-0362
  • Mfr. Part No. KBA40ED2300W
Each (In a Pack of 6)
PHP6,860.392(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY7 MCB, 2P, 16A Curve D, 230V AC, 60V DC, 25 kA Breaking Capacity
  • RS Stock No. 610-550
  • Mfr. Part No. 5SY7516-8
Each
PHP5,811.20(exc. VAT)
In Stock
Better World
Schneider Electric GFP RCCB, 100A, 4 Pole, 260mA, Type A, 415V ac
  • RS Stock No. 214-2103
  • Mfr. Part No. M9R84491
Each
PHP50,481.44(exc. VAT)
Temporarily out of stock
Schneider Electric Flexible Elbow Busbar Trunking, 250 → 750mm, 400A, Canalis Series
  • RS Stock No. 346-718
  • Mfr. Part No. KSA400DLF4CFM
Each
PHP357,522.60(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY4 MCB, 2P, 8A, Type A, 230V AC, 60V DC, 20 kA Breaking Capacity
  • RS Stock No. 610-581
  • Mfr. Part No. 5SY4508-5
Each
PHP6,442.21(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 MCB, 2P, 63A, Type Z, 400V AC, 125V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-262
  • Mfr. Part No. 2CDS252001R0608
Each
PHP21,419.39(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 400A 3VA, 4 channels
  • RS Stock No. 156-737
  • Mfr. Part No. 3VA2340-5HM42-0AA0
Each
PHP225,024.04(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 70 kA
  • RS Stock No. 209-6971
  • Mfr. Part No. 3VA1112-6EE42-0AA0
Each
PHP55,826.79(exc. VAT)
Temporarily out of stock
Siemens SIVACON Busbar
  • RS Stock No. 626-480
  • Mfr. Part No. 8PQ4000-0BA12
Each
PHP7,924.36(exc. VAT)
In Stock
Better World
Schneider Electric RCBO, 32A Current Rating, 3P+N Poles, 300mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3353
  • Mfr. Part No. A9DV7732
Each
PHP33,733.72(exc. VAT)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 4P 400A, Fixed Mount
  • RS Stock No. 250-4130
  • Mfr. Part No. 1SDA054395R1
Each
PHP346,677.02(exc. VAT)
Temporarily out of stock
Hager NQN MCB, 4P, 32A Curve B, 415V AC, 20 kA Breaking Capacity
  • RS Stock No. 597-938
  • Mfr. Part No. NQN432
Each
PHP29,266.14(exc. VAT)
In Stock
Schneider Electric Linergy Busbar, 25mm Pitch
  • RS Stock No. 130-538
  • Mfr. Part No. LVS04518
Each
PHP36,140.95(exc. VAT)
Temporarily out of stock
ABB S204L MCB, 4P, 40A Curve C, 400V AC, 6 kA Breaking Capacity
  • RS Stock No. 201-400
  • Mfr. Part No. 2CDS244701R0404
Each
PHP19,318.23(exc. VAT)
Temporarily out of stock
ABB Busbar for use with S200C
  • RS Stock No. 250-4788
  • Mfr. Part No. 2CDL803141R1024
1 Box of 15
PHP41,600.98(exc. VAT)
Temporarily out of stock
Schneider Electric RCBO
  • RS Stock No. 239-9993
  • Mfr. Part No. A9TYA4625
Each
PHP34,801.58(exc. VAT)
In Stock
Littelfuse PC Board Non Resettable Fuse, Radial 50mA, 250V ac
  • RS Stock No. 895-1644
  • Mfr. Part No. 37200500431
Each (In a Pack of 10)
PHP53.46(exc. VAT)
Temporarily out of stock
Eaton 160A NH Fuse, 58 x 30 x 125mm, 500V ac
  • RS Stock No. 243-247
  • Mfr. Part No. 160NHG0B NH FUSE 160A 500V GG/GL SIZE 0
1 Pack of 3
PHP1,575.03(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4590
  • Mfr. Part No. 3VA2125-7MS36-0AA0
Each
PHP44,196.95(exc. VAT)
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