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

162 of 999+
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 80A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9415
  • Mfr. Part No. 3VA1180-3GF42-0AA0
Each
PHP30,060.08(exc. VAT)
Temporarily out of stock
Better World
ABB, XT2H MCCB 4P 3.2A, Fixed Mount
  • RS Stock No. 236-7384
  • Mfr. Part No. 1SDA067608R1 XT2H 160 TMD 3.2A FF
Each
PHP31,091.51(exc. VAT)
In Stock
Schneider Electric Acti9 A9F MCB, 1P, 40A Curve C, 230V AC, 72V DC, 20 kA Breaking Capacity
  • RS Stock No. 288-7096
  • Mfr. Part No. A9F94140
Each
PHP13,192.53(exc. VAT)
In Stock
Siemens SENTRON 2 Phase Busbar, 27mm Pitch
  • RS Stock No. 187-5164
  • Mfr. Part No. 5ST3610
Each
PHP336.10(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 16A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 211-3749
  • Mfr. Part No. 3VA1196-6EE36-0AA0
Each
PHP21,249.06(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 160A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 209-4917
  • Mfr. Part No. 3VA1116-4ED32-0AA0
Each
PHP49,031.67(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 400A, Breaking Capacity 5 kA, Withdrawable
  • RS Stock No. 246-856
  • Mfr. Part No. 191610 NZMN3-4-VX400-AVE
Each
PHP266,851.68(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 500A, Breaking Capacity 4 kA, Fixed Mount
  • RS Stock No. 229-463
  • Mfr. Part No. 109693 NZMC3-4-A500/320
Each
PHP217,660.06(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 4P 50A, Breaking Capacity 70 kA, DIN Rail Mount
  • RS Stock No. 178-7953
  • Mfr. Part No. LV426746
Each
PHP94,450.11(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, Compact MCCB 4P 100A, Breaking Capacity 36 kA, DIN Rail Mount
  • RS Stock No. 178-7980
  • Mfr. Part No. LV426777
Each
PHP74,016.09(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 4P 1.6kA, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 345-342
  • Mfr. Part No. C16BN4FM
Each
PHP1,197,172.13(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 63A, Breaking Capacity 36 kA, Panel Mount
  • RS Stock No. 654-702
  • Mfr. Part No. IL0633P36
Each
PHP40,503.43(exc. VAT)
In Stock
RS PRO 25A British Standard Fuse, F1, 550V ac
  • RS Stock No. 521-2949
Each (In a Pack of 5)
PHP339.706(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 80A, Breaking Capacity 25 kA, Panel Mount
  • RS Stock No. 654-817
  • Mfr. Part No. IL0803P25
Each
PHP29,094.44(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 32A, Breaking Capacity 25 kA, Panel Mount
  • RS Stock No. 654-814
  • Mfr. Part No. IL0323P25
Each
PHP25,557.35(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX MCCB 3P 40A, Breaking Capacity 25 kA, Panel Mount
  • RS Stock No. 654-756
  • Mfr. Part No. IL0403P25
Each
PHP25,557.35(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Insulation accessory for use with Compact Nsx, Easypact Cvs
  • RS Stock No. 221-1261
  • Mfr. Part No. LV432579
Each
PHP3,897.96(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT New generation MCCB 3P 25A, Breaking Capacity 440 V, Fixed Mount
  • RS Stock No. 205-138
  • Mfr. Part No. C11N34V025L
Each
PHP231,416.86(exc. VAT)
Temporarily out of stock
Schneider Electric 3 Phase Surge Arrester, 75kA, 3000V (Volts), Clip-On Mount
  • RS Stock No. 438-762
  • Mfr. Part No. M9L53480
Each
PHP88,794.90(exc. VAT)
In Stock
Hinode Electric Co Ltd 100A Bolted Tag Fuse, 61mm
  • RS Stock No. 103-4250
  • Mfr. Part No. 660GH-100
Each (In a Pack of 5)
PHP1,683.794(exc. VAT)
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