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

1637 of 999+
Eaton 2.6A Resettable Fuse, 6V
  • RS Stock No. 225-8287
  • Mfr. Part No. PTSLR18126V260
Each (In a Pack of 10)
PHP63.244(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 271-9327
  • Mfr. Part No. 3VA1140-4GE46-0AA0
Each
PHP31,388.18(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3714
  • Mfr. Part No. 3VA2025-8JQ42-0AA0
Each
PHP150,077.40(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 40A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-4592
  • Mfr. Part No. 3VA2140-0HL36-0AA0
Each
PHP71,387.54(exc. VAT)
Eaton IZMX40H3-P40F-1 Electronic Circuit Breaker 4kA , Fixed
  • RS Stock No. 132-825
  • Mfr. Part No. 183586 IZMX40H3-P40F-1
Each
PHP2,326,113.62(exc. VAT)
Eaton PC Board Non Resettable Fuse, Radial 5A, 250V ac
  • RS Stock No. 769-3359
  • Mfr. Part No. SS-5-5A-BK
Each (In a Pack of 5)
PHP141.716(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 40A, Breaking Capacity 70 kA
  • RS Stock No. 209-6825
  • Mfr. Part No. 3VA1140-6EF46-0AA0
Each
PHP34,496.32(exc. VAT)
Eaton Eaton xEnergy Main Busbar Support for use with Busbar
  • RS Stock No. 241-287
  • Mfr. Part No. 141872 XNNS-30X30
1 Pack of 5
PHP30,511.03(exc. VAT)
Schurter SMD Non Resettable Fuse 1.5A, 32 V ac, 63V dc
  • RS Stock No. 665-7328P
  • Mfr. Part No. 3412.0117.22.
Each (Supplied on a Reel)
PHP34.043(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 271-9657
  • Mfr. Part No. 3VA11104FD420AA0
Each
PHP35,885.18(exc. VAT)
Lovato 3 Phase Surge Protector
  • RS Stock No. 216-8303
  • Mfr. Part No. SG23NA300R
Each
PHP33,609.52(exc. VAT)
Siemens SENTRON Connection Kit
  • RS Stock No. 277-0765
  • Mfr. Part No. 3WA9111-0AL12
Each
PHP8,566.06(exc. VAT)
Siemens, SENTRON MCCB 3P 250A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 147-852
  • Mfr. Part No. 3VA5225-7EC31-1AA0
Each
PHP132,613.73(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-4691
  • Mfr. Part No. 3VA2163-0HM46-0AA0
Each
PHP116,271.37(exc. VAT)
ABB Tmax Cover for use with Tmax T
  • RS Stock No. 237-5950
  • Mfr. Part No. 1SDA014038R1 LTC T6 F
Each
PHP4,006.65(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 110 kA, Fixed Mount
  • RS Stock No. 270-4732
  • Mfr. Part No. 3VA2163-7HK32-0AA0
Each
PHP53,375.60(exc. VAT)
Schurter SMD Non Resettable Fuse 630mA, 125 V dc, 250V ac
  • RS Stock No. 736-0738P
  • Mfr. Part No. 3403.0164.24
Each (Supplied on a Reel)
PHP39.22(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3959
  • Mfr. Part No. 3VA2110-6JP42-0AA0
Each
PHP116,296.97(exc. VAT)
ABB MCCB Molded Case Circuit Breaker 3P 320A, Fixed Mount
  • RS Stock No. 250-4253
  • Mfr. Part No. 1SDA054551R1
Each
PHP191,082.74(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 100A, Breaking Capacity 85 kA, Fixed Mount
  • RS Stock No. 270-3950
  • Mfr. Part No. 3VA2110-6HK42-0AA0
Each
PHP71,243.75(exc. VAT)
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