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

283 of 999+
Temporarily out of stock
ABB S301 MCB, 1P, 6A Curve B, 415V AC, 125V DC, 100 kA Breaking Capacity
  • RS Stock No. 200-262
  • Mfr. Part No. 2CDS381001R0065
Each
PHP11,036.58(exc. VAT)
Temporarily out of stock
Eaton Busbar, 600V ac, 60mm Pitch
  • RS Stock No. 178-8004
  • Mfr. Part No. 101451 BBA0-25
Each
PHP3,310.91(exc. VAT)
Temporarily out of stock
Hager CFB RCD Switch, 40A, 4 Pole, 300mA, Type B, 230 → 400V
  • RS Stock No. 599-751
  • Mfr. Part No. CFB640F
Each
PHP77,771.88(exc. VAT)
Temporarily out of stock
RS PRO SMD Non-Resettable Surface Mount Fuse 8A, 125V
  • RS Stock No. 252-2213
Each (In a Pack of 50)
PHP16.735(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 250A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 210-1735
  • Mfr. Part No. 3VA2325-7MS32-0AA0
Each
PHP128,473.07(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 800A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 270-4843
  • Mfr. Part No. 3VA2580-5KQ32-0AA0
Each
PHP276,691.10(exc. VAT)
In Stock
Bourns 50A Tag Fuse, 66mm, 240 V ac, 150V dc, 24.1mm
  • RS Stock No. 254-4212
  • Mfr. Part No. PF-MB1-50
Each
PHP4,371.38(exc. VAT)
Temporarily out of stock
Hager RCBO, 16A Current Rating, 1P+N Poles, 10mA Trip Sensitivity, Type AC
  • RS Stock No. 602-215
  • Mfr. Part No. ACC816F
Each
PHP30,146.23(exc. VAT)
In Stock
Eaton 550A Centred Tag Fuse, NH2, 690V ac
  • RS Stock No. 182-1392
  • Mfr. Part No. 170M5811D
Each (In a Box of 3)
PHP25,404.847(exc. VAT)
Temporarily out of stock
Schneider Electric Canalis 1 Phase Busbar, 230-400V
  • RS Stock No. 212-276
  • Mfr. Part No. KBA40ED2203W
1 Pack of 6
PHP56,484.53(exc. VAT)
Temporarily out of stock
ABB Tmax XT Front Terminal for use with Tmax XT
  • RS Stock No. 237-6153
  • Mfr. Part No. 1SDA066893R1 ES XT2 3PCS
Each
PHP3,252.84(exc. VAT)
In Stock
Contactum RCBO, 32A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type B, CCPBR Range
  • RS Stock No. 240-6388
  • Mfr. Part No. CCPBR0632AB
Each
PHP2,059.94(exc. VAT)
Temporarily out of stock
Eaton IZMX40N3-V08F-1 Electronic Circuit Breaker 800A , Fixed
  • RS Stock No. 132-865
  • Mfr. Part No. 183710 IZMX40N3-V08F-1
Each
PHP447,339.59(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 249-032
  • Mfr. Part No. 192138 NZMH2-PX250-BT
Each
PHP189,288.74(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 125A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-891
  • Mfr. Part No. 3VA5212-7EC31-0AA0
Each
PHP99,087.87(exc. VAT)
In Stock
Bourns SMD Non Resettable Fuse 2A, 63V dc
  • RS Stock No. 692-5053
  • Mfr. Part No. SF-1206S200-2
Each (In a Pack of 10)
PHP26.928(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 100A, Breaking Capacity 18 kA, Fixed Mount
  • RS Stock No. 147-772
  • Mfr. Part No. 3VA5210-5EC31-1AA0
Each
PHP75,636.37(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric Acti 9 Cable for use with Acti 9, Acti 9 Smartlink Circuit Breaker
  • RS Stock No. 125-1393
  • Mfr. Part No. A9XCAS06
Each
PHP2,961.04(exc. VAT)
Temporarily out of stock
ABB, Parts MCCB 4P 0A
  • RS Stock No. 236-6843
  • Mfr. Part No. 1SDA068642R1
Each
PHP2,446.92(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA2, 3 channels
  • RS Stock No. 156-670
  • Mfr. Part No. 3VA2325-0HN32-0AA0
Each
PHP224,286.15(exc. VAT)
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