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
Fuses - PCB
Fuses - PCB

33502 Products showing for Fuses & Circuit Breakers

194 of 999+
ASSMANN WSW Surge Protector, 10kV, DIN Rail Mount
  • RS Stock No. 649-587
  • Mfr. Part No. DN-95421
Each
PHP2,916.10(exc. VAT)
Siemens SENTRON Retrofit Kit
  • RS Stock No. 277-0934
  • Mfr. Part No. 3WA9111-0EK53
1 Set
PHP26,242.06(exc. VAT)
Schneider Electric, ComPacT MCCB 4P 1.6kA, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 429-395
  • Mfr. Part No. C160N460FM
Each
PHP1,266,022.06(exc. VAT)
Hager NRN MCB, 3P, 40A Curve C, 415V AC, 20 kA Breaking Capacity
  • RS Stock No. 597-948
  • Mfr. Part No. NRN340
Each
PHP21,297.07(exc. VAT)
Siemens, SENTRON MCCB 3P 30A, Breaking Capacity 7 kA, Fixed Mount
  • RS Stock No. 147-867
  • Mfr. Part No. 3VA5230-5ED31-2AA0
Each
PHP67,491.41(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 85 kA
  • RS Stock No. 209-6922
  • Mfr. Part No. 3VA2125-6HN46-0AA0
Each
PHP72,339.13(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 250A, Fixed Mount
  • RS Stock No. 260-7885
  • Mfr. Part No. C25F3D
Each
PHP60,781.60(exc. VAT)
Better World
Schneider Electric Circuit Trip
  • RS Stock No. 212-0242
  • Mfr. Part No. LV431505
Each
PHP149,861.98(exc. VAT)
Siemens, SENTRON MCCB 2P 200A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-315
  • Mfr. Part No. 3VA5220-7ED61-0AA0
Each
PHP101,322.79(exc. VAT)
Wickmann 7.5A Brown Blade Car Fuse, 32V dc
  • RS Stock No. 174-0225
  • Mfr. Part No. 029707.5WXNV
1 Box of 3000
PHP39,204.00(exc. VAT)
Siemens, SENTRON MCCB 3P 15A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-603
  • Mfr. Part No. 3VA5195-1MU31-0AA0
Each
PHP34,278.32(exc. VAT)
Siemens, SENTRON MCCB 4P 630A, Breaking Capacity 35 kA, Fixed Mount
  • RS Stock No. 270-4831
  • Mfr. Part No. 3VA2563-7KQ42-0AA0
Each
PHP421,119.75(exc. VAT)
Littelfuse 0.75A Resettable Fuse, 30V
  • RS Stock No. 517-7048
  • Mfr. Part No. SMD075F-2
Each (In a Pack of 10)
PHP31.779(exc. VAT)
Socomec 3954 Lug Connector for use with SIRCO Load Break Switches
  • RS Stock No. 252-3537
  • Mfr. Part No. 39543020
Each
PHP3,373.13(exc. VAT)
Eaton xEffect MCB, 2P, 100A Curve B, 400V AC, 20 kA Breaking Capacity
  • RS Stock No. 246-359
  • Mfr. Part No. 174500 AZ-2-B100
Each
PHP20,600.36(exc. VAT)
Better World
Siemens, 3VA1 MCCB 3P 250A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 210-3339
  • Mfr. Part No. 3VA1325-5MH32-0AA0
Each
PHP64,652.38(exc. VAT)
Eaton IZMX/INX Electronic Circuit Breaker 800A , 3 channels , Fixed
  • RS Stock No. 132-660
  • Mfr. Part No. 183634 IZMX40H3-P08F-1
Each
PHP807,263.05(exc. VAT)
Siemens SENTRON 5SY4 MCB, 2P, 8A Curve B, 400V AC, 60V DC, 20 kA Breaking Capacity
  • RS Stock No. 610-292
  • Mfr. Part No. 5SY4208-6
Each
PHP5,290.24(exc. VAT)
Siemens 400A Centred Tag Fuse, NH3, 690V
  • RS Stock No. 210-6896
  • Mfr. Part No. 3NA3360-6
Each (In a Pack of 3)
PHP9,280.947(exc. VAT)
Eaton Circuit Trip Circuit Trip for use with IZMX
  • RS Stock No. 132-427
  • Mfr. Part No. 183983 IZMX-PXRP-T-1
Each
PHP220,594.11(exc. VAT)
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