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

181 of 999+
In Stock
Schurter PC Board Non Resettable Fuse, Radial 6.3A, 250V ac
  • RS Stock No. 284-5596
  • Mfr. Part No. 7100.1073.13
Each (In a Pack of 10)
PHP81.85(exc. VAT)
In Stock
Schurter SMD Non Resettable Fuse 250mA, 125V ac/dc
  • RS Stock No. 131-583
  • Mfr. Part No. 3404.0006.11
Each (In a Pack of 10)
PHP61.439(exc. VAT)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 3P 630A, Fixed Mount
  • RS Stock No. 250-4252
  • Mfr. Part No. 1SDA054550R1
Each
PHP415,862.68(exc. VAT)
Temporarily out of stock
Eaton xEnergy Main Distribution Board
  • RS Stock No. 230-114
  • Mfr. Part No. 121449 XPNBCB-E-06
Each
PHP7,624.33(exc. VAT)
Temporarily out of stock
ABB S802C MCB, 2P, 20A Curve K, 415V AC, 25 kA Breaking Capacity
  • RS Stock No. 140-531
  • Mfr. Part No. 2CCS882001R0487
Each
PHP9,773.15(exc. VAT)
In Stock
Better World
Schneider Electric RCBO, 20A Current Rating, 3P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3287
  • Mfr. Part No. A9DK1720
Each
PHP30,692.48(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-3920
  • Mfr. Part No. 3VA2110-0HL42-0AA0
Each
PHP96,887.22(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 2.5 kA, Fixed Mount
  • RS Stock No. 270-4765
  • Mfr. Part No. 3VA2163-7MN36-0AA0
Each
PHP70,562.88(exc. VAT)
In Stock
Schneider Electric Multi 9 Busbar Connector, 1000V, 18mm Pitch
  • RS Stock No. 214-2108
  • Mfr. Part No. M9XUPC04
Each
PHP4,682.21(exc. VAT)
Temporarily out of stock
ABB, Tmax XT MCCB 3P 32A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 237-6140
  • Mfr. Part No. 1SDA066802R1 XT1B 160 TMD 32A FF
Each
PHP18,335.58(exc. VAT)
In Stock
Better World
Schneider Electric Vigi iDT40 RCD, 40A, 3 Pole, 300mA, 400V
  • RS Stock No. 191-6152
  • Mfr. Part No. A9Y63740
Each
PHP21,222.71(exc. VAT)
Temporarily out of stock
ABB MCCB Molded Case Circuit Breaker 3P 630A, Fixed Mount
  • RS Stock No. 250-4143
  • Mfr. Part No. 1SDA054415R1
Each
PHP274,739.92(exc. VAT)
Unavailable
Schneider Electric ComPact NSX Interlock Kit for use with Compact NSX 400/630 circuit breaker
  • RS Stock No. 219-9412
  • Mfr. Part No. LV432614
Each
PHP18,909.01(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 1kA, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 270-4781
  • Mfr. Part No. 3VA2510-6HK42-0AA0
Each
PHP574,456.42(exc. VAT)
In Stock
Eaton 30A Green Automotive Car Fuse, 32V dc
  • RS Stock No. 848-2560
  • Mfr. Part No. ATC-30
Each
PHP67.32(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 4P 400A, Breaking Capacity 9 kA, Plug In
  • RS Stock No. 230-886
  • Mfr. Part No. 113581 NZMH3-4-A400/250-AVE
Each
PHP289,504.74(exc. VAT)
Temporarily out of stock
Siemens 125A Tag Fuse, 97.5mm, 700V
  • RS Stock No. 608-693
  • Mfr. Part No. 3NB1724-0KK13
1 Pack of 3
PHP17,059.39(exc. VAT)
Temporarily out of stock
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 4P 400A, Breaking Capacity 5 kA, Plug In
  • RS Stock No. 244-195
  • Mfr. Part No. 150147 NZMN3-4-VE400-T
Each
PHP320,441.94(exc. VAT)
Temporarily out of stock
Better World
Siemens, 0AA0 MCCB 4P 40A, Breaking Capacity 25 kA, Fixed Mount
  • RS Stock No. 211-6008
  • Mfr. Part No. 3VA1140-3EE42-0AA0
Each
PHP26,276.56(exc. VAT)
Temporarily out of stock
Schneider Electric, PowerPact Circuit breaker 2P 30A, Breaking Capacity 18 kA, Clip-On
  • RS Stock No. 335-260
  • Mfr. Part No. BDL26030LU
Each
PHP22,806.25(exc. VAT)
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