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

33476 Products showing for Fuses & Circuit Breakers

20 of 999+
In Stock
Siemens SENTRON Handle Coupler for use with Residual Current Miniature Circuit Breaker
  • RS Stock No. 202-7116
  • Mfr. Part No. 5ST3805-1
Each
PHP1,605.49(exc. VAT)
Unavailable
Schneider Electric, ComPact MCCB Molded Case Circuit Breaker 4P 250A, Fixed Mount
  • RS Stock No. 221-1066
  • Mfr. Part No. LV433856
Each
PHP334,581.40(exc. VAT)
In Stock
Eaton 6A DII Bottle Fuse, E27 Thread Size, gG, 500V ac
  • RS Stock No. 181-8933
  • Mfr. Part No. 6D27Q
Each
PHP180.12(exc. VAT)
In Stock
Schneider Electric Single Phase Surge Arrester, 20kA, 460V (Volts), Clip-On Mount
  • RS Stock No. 130-972
  • Mfr. Part No. A9L20321
Each
PHP69,012.41(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 RCD, 6A
  • RS Stock No. 219-9025
  • Mfr. Part No. A9N26946
Each
PHP8,804.40(exc. VAT)
Being discontinued
RS PRO 2A F Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-431
Each (In a Pack of 10)
PHP24.907(exc. VAT)
In Stock
Eaton 630A Centred Tag Fuse, NH3, 500V ac
  • RS Stock No. 703-8768
  • Mfr. Part No. 630NHG3B
Each
PHP2,490.41(exc. VAT)
In Stock
Bourns 0.5A Resettable Fuse, 60V
  • RS Stock No. 647-8493
  • Mfr. Part No. MF-R050
Each (In a Pack of 10)
PHP28.542(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 250A, Fixed Mount
  • RS Stock No. 254-6361
  • Mfr. Part No. C25N3TM250
Each
PHP141,040.84(exc. VAT)
In Stock
Better World
Schneider Electric, ComPacT NSX MCCB 3P 200A, Fixed Mount
  • RS Stock No. 254-6355
  • Mfr. Part No. C25F3TM200
Each
PHP126,326.16(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 iC60N MCB, 2P, 2A Curve C, 12 → 60 V, 100 → 130 V, 220 → 240 V, 380
  • RS Stock No. 734-9131
  • Mfr. Part No. A9F74202
Each
PHP9,857.77(exc. VAT)
In Stock
WJ Furse Copper Alloy Earth Clamp Nominal Rod dia. 16mm
  • RS Stock No. 153-2963
  • Mfr. Part No. 7TCA083220R0010 CR515
Each (In a Pack of 10)
PHP644.383(exc. VAT)
In Stock
Littelfuse Phosphor Bronze PCB Mount Fuse Clip for 5 x 20mm Cartridge Fuse
  • RS Stock No. 787-4173
  • Mfr. Part No. 52100001009
Each (In a Pack of 10)
PHP10.748(exc. VAT)
Being discontinued
RS PRO 10A T Glass Cartridge Fuse, 5 x 20mm
  • RS Stock No. 563-334
Each (In a Pack of 10)
PHP19.267(exc. VAT)
In Stock
Eaton xComfort IKA standard series Distribution Board
  • RS Stock No. 125-763
  • Mfr. Part No. 174206 IKA-1/12-OT
Each
PHP4,338.39(exc. VAT)
Temporarily out of stock
Schneider Electric Acti9 K60N MCB Mini Circuit Breaker, 3P, 20A Curve B, 400V AC, 6000 A Breaking Capacity
  • RS Stock No. 588-896
  • Mfr. Part No. A9K01320
Each
PHP1,306.19(exc. VAT)
In Stock
Eaton, xEnergy MCCB 3P 100A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 454-8073
  • Mfr. Part No. 259079 NZMB1-A100
Each
PHP30,161.34(exc. VAT)
Temporarily out of stock
ABB, SACE FORMULA MCCB Molded Case Circuit Breaker 1P 20A, Fixed Mount
  • RS Stock No. 231-9291
  • Mfr. Part No. 1SDA066686R1 / A1N 125 TMF 20-400 1p F F
Each
PHP8,848.23(exc. VAT)
In Stock
Better World
Schneider Electric Acti 9 Rotary Handle for use with iC60 MCB, iDPN Vigi, ilD MCB, iSW-NA
  • RS Stock No. 791-3023
  • Mfr. Part No. A9A27005
Each
PHP6,032.44(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Acti 9 RCD
  • RS Stock No. 219-9027
  • Mfr. Part No. A9N26948
Each
PHP8,804.40(exc. VAT)
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