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

33476 Products showing for Fuses & Circuit Breakers

95 of 999+
Better World
Schneider Electric Horizontal Distribution Busbar Trunking, 5m, 500A, Canalis KS Series
  • RS Stock No. 211-0471
  • Mfr. Part No. KSA500ED45018
Each
PHP249,413.75(exc. VAT)
Eaton RCBO, 10A Current Rating, 3+N Poles, 30mA Trip Sensitivity, Type D, xPole Range
  • RS Stock No. 231-693
  • Mfr. Part No. 120670 mRB6-10/3N/D/003-A
Each
PHP32,550.04(exc. VAT)
Eaton Fuse Holder Cable Clamp
  • RS Stock No. 246-740
  • Mfr. Part No. 183004 XNH2-XCT
1 Pack of 3
PHP2,559.08(exc. VAT)
Phoenix Contact Surge Protector, 20kA, DIN Rail Mount
  • RS Stock No. 207-2722
  • Mfr. Part No. 2906719
Each
PHP7,417.62(exc. VAT)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 80A, Breaking Capacity 16 kA, DIN Rail Mount
  • RS Stock No. 271-9616
  • Mfr. Part No. 3VA10802ED420AA0
Each
PHP29,264.10(exc. VAT)
Siemens 125A Centred Tag Fuse, NH1, 690V
  • RS Stock No. 210-6883
  • Mfr. Part No. 3NA3132-6
Each (In a Pack of 3)
PHP4,073.957(exc. VAT)
Schneider Electric, ComPacT NSX Circuit breaker 4P 100A, Breaking Capacity 40 KA
  • RS Stock No. 119-651
  • Mfr. Part No. C10B44B100
Each
PHP243,108.17(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 25A, Breaking Capacity 55 kA
  • RS Stock No. 209-6787
  • Mfr. Part No. 3VA1125-5ED42-0AA0
Each
PHP30,632.21(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 25A, Breaking Capacity 200 kA, Fixed Mount
  • RS Stock No. 270-4512
  • Mfr. Part No. 3VA2125-0KQ32-0AA0
Each
PHP143,580.98(exc. VAT)
Phoenix Contact Surge Protector, 40kA, DIN Rail Mount
  • RS Stock No. 201-5507
  • Mfr. Part No. 2907874
Each
PHP12,494.57(exc. VAT)
Better World
Siemens SENTRON Electronic Circuit Breaker 250A 3VA2, 4 channels Type N
  • RS Stock No. 157-174
  • Mfr. Part No. 3VA2225-7HL42-0AA0
Each
PHP174,116.84(exc. VAT)
Schneider Electric, ComPacT MCCB 3P 100A, Fixed Mount
  • RS Stock No. 260-7454
  • Mfr. Part No. C10V35E100
Each
PHP178,133.73(exc. VAT)
ETI 10A DI Diazed Fuse, E16 Thread Size, gG - gL, 500V ac
  • RS Stock No. 417-846
  • Mfr. Part No. 2311404
Each (In a Pack of 5)
PHP74.402(exc. VAT)
ABB Tmax XT Motor Operator for use with XT2, XT4
  • RS Stock No. 237-6087
  • Mfr. Part No. 1SDA066469R1 MOE-E XT2-XT4 24VDC
Each
PHP47,909.23(exc. VAT)
Better World
ABB, XT4S MCCB 3P 20A, Fixed Mount
  • RS Stock No. 236-6679
  • Mfr. Part No. 1SDA068300R1 XT4S 160 TMD 20A FF
Each
PHP42,608.76(exc. VAT)
Schneider Electric Surge Arrester, 40kA, 350V ac, Clip-On Mount
  • RS Stock No. 288-7108
  • Mfr. Part No. A9L40301
Each
PHP58,600.94(exc. VAT)
SENTRON for use with 3VA51 Series
  • RS Stock No. 263-546
  • Mfr. Part No. 3VA9138-0DK72
Each
PHP25,145.64(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-3832
  • Mfr. Part No. 3VA2063-5JQ36-0AA0
Each
PHP127,906.24(exc. VAT)
Eaton AFDD, 10A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type B, AFDD+ Range
  • RS Stock No. 146-2816
  • Mfr. Part No. 187168 AFDD-10/2/B/003-A
Each
PHP16,589.27(exc. VAT)
Schneider Electric, PowerPact MCCB 3P 45A, Breaking Capacity 65 kA, Clip-On
  • RS Stock No. 346-812
  • Mfr. Part No. BJF36045
Each
PHP91,141.58(exc. VAT)
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