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

1653 of 999+
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 100A, Fixed Mount
  • RS Stock No. 260-8035
  • Mfr. Part No. C25W35E100
Each
PHP281,290.61(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 90A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 147-725
  • Mfr. Part No. 3VA5190-5EC31-1AA0
Each
PHP30,528.00(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3567
  • Mfr. Part No. 3VA2010-6KQ46-0AA0
Each
PHP175,030.19(exc. VAT)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 4P 100A, Fixed Mount
  • RS Stock No. 236-7550
  • Mfr. Part No. 1SDA067899R1 XT2H 160 Ekip I 100A FF
Each
PHP69,492.73(exc. VAT)
In Stock
Bourns Surface Mount Fuse 15A, 32V dc
  • RS Stock No. 245-9247P
  • Mfr. Part No. SF-1206SA1500R-2
Each (Supplied on a Reel)
PHP47.824(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 1P 35A, Breaking Capacity 14 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-355
  • Mfr. Part No. 3VA5135-4ED11-1AA0
Each
PHP18,921.42(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3592
  • Mfr. Part No. 3VA2010-7KP46-0AA0
Each
PHP163,062.11(exc. VAT)
Temporarily out of stock
ABB, Tmax XT MCCB 3P 12.5A, Fixed Mount
  • RS Stock No. 237-6210
  • Mfr. Part No. 1SDA067009R1 XT2N 160 TMD 12.5A FF
Each
PHP23,703.72(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 630A, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 432-840
  • Mfr. Part No. C063H360FM
Each
PHP793,515.72(exc. VAT)
In Stock
Bourns Surface Mount Fuse 20A, 32V dc
  • RS Stock No. 245-9251P
  • Mfr. Part No. SF-1206SA2000R-2
Each (Supplied on a Reel)
PHP47.824(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 80A, Fixed Mount
  • RS Stock No. 260-7494
  • Mfr. Part No. C10W36M080
Each
PHP187,868.17(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Wire Connector for use with 3VA1 250
  • RS Stock No. 210-9347
  • Mfr. Part No. 3VA9254-0JB12
Each
PHP4,296.20(exc. VAT)
Temporarily out of stock
Siemens 3SX5601 Adapter for use with 3SE63
  • RS Stock No. 271-9537
  • Mfr. Part No. 3SX56013SV001AK3
Each
PHP5,428.94(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 250A, Breaking Capacity 100 kA, Fixed Mount
  • RS Stock No. 147-359
  • Mfr. Part No. 3VA5225-1BB41-0AA0
Each
PHP156,066.69(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB 4P 125A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-883
  • Mfr. Part No. 3VA5212-6EF41-2AA0
Each
PHP185,207.56(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3982
  • Mfr. Part No. 3VA2110-7HM42-0AA0
Each
PHP100,709.10(exc. VAT)
Temporarily out of stock
ABB RCBO, 25A Current Rating, 1P Poles, Type C
  • RS Stock No. 237-5251
  • Mfr. Part No. 2CSR275151R0254
Each
PHP11,300.14(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-3991
  • Mfr. Part No. 3VA2110-7JP46-0AA0
Each
PHP126,714.04(exc. VAT)
Temporarily out of stock
Better World
Siemens SENTRON Electronic Circuit Breaker 160A 3VA2, 4 channels
  • RS Stock No. 157-152
  • Mfr. Part No. 3VA2216-7HM42-0AA0
Each
PHP200,677.00(exc. VAT)
Temporarily out of stock
Better World
Siemens 5SV3 RCCB, 80A, 2 Pole, 300mA, Type A, 230V ac
  • RS Stock No. 211-9690
  • Mfr. Part No. 5SV3617-8
Each
PHP43,374.60(exc. VAT)
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