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

183 of 999+
In Stock
Siemens 315A NH Fuse, NH2, 690 / 250V ac/dc
  • RS Stock No. 269-8357
  • Mfr. Part No. 3ND2252
Each (In a Pack of 3)
PHP4,036.783(exc. VAT)
Temporarily out of stock
Mersen 32A NH Fuse, NH000, 500V ac
  • RS Stock No. 375-9553
  • Mfr. Part No. Z211438C
Each (In a Pack of 3)
PHP586.167(exc. VAT)
In Stock
Hager for use with KB263A Busbars, KB263C Busbars
  • RS Stock No. 144-4690
  • Mfr. Part No. KZ022
Each (In a Pack of 10)
PHP182.76(exc. VAT)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 3P 500A, Fixed Mount
  • RS Stock No. 250-4185
  • Mfr. Part No. 1SDA054461R1
Each
PHP257,610.21(exc. VAT)
In Stock
Legrand Document Holder for use with DRIVIA cabinets
  • RS Stock No. 786-5712
  • Mfr. Part No. 4 013 89
Each
PHP275.59(exc. VAT)
Temporarily out of stock
Siemens 50A Centred Tag Fuse, NH1, 690V
  • RS Stock No. 210-6878
  • Mfr. Part No. 3NA3120-6
Each (In a Pack of 3)
PHP4,073.957(exc. VAT)
Temporarily out of stock
Leitungsschutzschalter Resi9 1P, 25A, C
  • RS Stock No. 537-867
  • Mfr. Part No. R9F24125
Each
PHP1,902.83(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 160A, Breaking Capacity 15 kA, Fixed Mount
  • RS Stock No. 347-109
  • Mfr. Part No. C16B44B160
Each
PHP260,967.74(exc. VAT)
Temporarily out of stock
Eaton 30A Fuse Holder, 3P, 600V ac/dc
  • RS Stock No. 261-310
  • Mfr. Part No. CHCC3DU
1 Pack of 4
PHP6,593.77(exc. VAT)
Temporarily out of stock
Schneider Electric 30A Fuse Holder, 3P, 600V ac
  • RS Stock No. 212-362
  • Mfr. Part No. DFCC3
1 Pack of 4
PHP22,205.85(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S300P MCB, 3+N, 16A Curve C, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 201-370
  • Mfr. Part No. 2CDS383103R0164
Each
PHP38,501.66(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 12.5A, Fixed Mount
  • RS Stock No. 260-9494
  • Mfr. Part No. C10N3MA013
Each
PHP43,353.86(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200M MCB, 4P, 6A Curve D, 400V AC, 125V DC, 15 kA Breaking Capacity
  • RS Stock No. 202-967
  • Mfr. Part No. 2CDS274001R0061
Each
PHP41,190.87(exc. VAT)
Temporarily out of stock
Siemens 32A NH Fuse, NH000, 500V ac
  • RS Stock No. 396-124
  • Mfr. Part No. 3NA6812
Each (In a Pack of 3)
PHP491.213(exc. VAT)
Temporarily out of stock
Schneider Electric ComPacT Trip Unit for use with ComPacT NSX100
  • RS Stock No. 655-002
  • Mfr. Part No. C1634A160
Each
PHP97,427.45(exc. VAT)
In Stock
Circuit-breaker/thermal 15 A
  • RS Stock No. 577-461
  • Mfr. Part No. 1140-G111-P1M1-15A
Each
PHP913.94(exc. VAT)
In Stock
Appliance Safety Switch/Thermal
  • RS Stock No. 577-470
  • Mfr. Part No. 2-5700-IG1-P10-5A
Each
PHP1,206.93(exc. VAT)
In Stock
Eaton 125A Offset Tag Fuse, 440V ac
  • RS Stock No. 182-1695
  • Mfr. Part No. XS125
Each
PHP6,839.59(exc. VAT)
Temporarily out of stock
Eaton xEffect FAZ MCB, 3P, 20A Curve B, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 247-899
  • Mfr. Part No. 132782 FAZ-B20/3-RT
Each
PHP12,389.54(exc. VAT)
Temporarily out of stock
Eaton Eaton Moeller FAZ-DC MCB Mini Circuit Breaker, 2P, 20A Curve B, 500V DC, 10 kA Breaking Capacity
  • RS Stock No. 125-836
  • Mfr. Part No. 176082 FAZ-B20/2-DC
Each
PHP11,674.11(exc. VAT)
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