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

231 of 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4672
  • Mfr. Part No. 3VA2140-7KQ32-0AA0
Each
PHP135,307.82(exc. VAT)
In Stock
Better World
Siemens SENTRON 5SL60 MCB, 1P + N, 10A Curve C, 230V AC, 60V DC, 6 kA Breaking Capacity
  • RS Stock No. 328-343
  • Mfr. Part No. 5SL6010-7KL
Each
PHP4,970.48(exc. VAT)
Temporarily out of stock
Socomec 25A Tag Fuse, 14 X 51mm, 690V, 51mm
  • RS Stock No. 252-5312
  • Mfr. Part No. 170N1425
Each (In a Pack of 10)
PHP566.276(exc. VAT)
In Stock
ABB PS4 4 Phase Busbar, 230 → 400V, 17.5mm Pitch
  • RS Stock No. 225-5982
  • Mfr. Part No. 2CDL240101R1612 PS4/12/16
Each
PHP2,019.18(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 3P, 32A Curve B, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 204-379
  • Mfr. Part No. 2CDS273061R0325
Each
PHP41,029.96(exc. VAT)
In Stock
Littelfuse SMD Non Resettable Fuse 250mA, 32V
  • RS Stock No. 895-1619
  • Mfr. Part No. 0467.250NR
Each (In a Pack of 10)
PHP45.20(exc. VAT)
In Stock
Omron Busbar
  • RS Stock No. 111-3529
  • Mfr. Part No. PYDN-7.75-200S
Each
PHP480.69(exc. VAT)
Temporarily out of stock
ABB System Pro M Compact S200 M UC MCB, 4P, 2A Curve K, 400V AC, 440V DC, 10 kA Breaking Capacity
  • RS Stock No. 202-995
  • Mfr. Part No. 2CDS274061R0277
Each
PHP55,399.42(exc. VAT)
In Stock
Eaton 25A Bolted Tag Fuse, 500 V dc, 690V ac, 63.5mm
  • RS Stock No. 182-1629
  • Mfr. Part No. 25ET
Each
PHP1,166.98(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 211-3766
  • Mfr. Part No. 3VA2040-6KP36-0AA0
Each
PHP91,989.77(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 160A 3VA2, 3 channels
  • RS Stock No. 157-167
  • Mfr. Part No. 3VA2216-7MQ32-0AA0
Each
PHP163,050.15(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 50A, Fixed Mount
  • RS Stock No. 260-7478
  • Mfr. Part No. C10V4TM050
Each
PHP111,468.43(exc. VAT)
Temporarily out of stock
Eaton 32A Fuse Holder for 10 x 38mm Fuse, 1P, 600V ac
  • RS Stock No. 261-311
  • Mfr. Part No. CHM1DNU
1 Pack of 6
PHP5,942.61(exc. VAT)
Currently unavailable
Schurter PC Board Non Resettable Fuse 2.5A, 125V ac/dc
  • RS Stock No. 865-7834
  • Mfr. Part No. 0034.4225
Each (In a Pack of 10)
PHP125.048(exc. VAT)
In Stock
Eaton Eaton xEnergy Main Partitions for use with NZM4
  • RS Stock No. 244-356
  • Mfr. Part No. 184665 XTPPN4CH
Each
PHP1,649.50(exc. VAT)
Temporarily out of stock
Hager MCCB 4P 125A, Breaking Capacity 2 kA, DIN Rail Mount
  • RS Stock No. 144-4931
  • Mfr. Part No. HCA126H
Each
PHP40,466.35(exc. VAT)
In Stock
Hager GAMMA 1 Phase Distribution Board, 1 Way, 63 A
  • RS Stock No. 252-2608
  • Mfr. Part No. GD113A
Each
PHP3,310.23(exc. VAT)
In Stock
Eaton PXF-A RCCB, 25A, 1+N Pole, 30mA, Type A, 440V ac
  • RS Stock No. 490-157
  • Mfr. Part No. 236744 PXF-25/2/003-A
Each
PHP3,300.79(exc. VAT)
Temporarily out of stock
Mersen Surge Protector
  • RS Stock No. 179-3079
  • Mfr. Part No. 83230000 / SP23-20K-N
Each
PHP2,608.21(exc. VAT)
Temporarily out of stock
ABB PBFC 3, 3+N Phase Busbar
  • RS Stock No. 201-488
  • Mfr. Part No. 1STQ007408A0000
Each
PHP79,268.76(exc. VAT)
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