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

185 of 999+
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 209-5171
  • Mfr. Part No. 3VA2163-5KP46-0AA0
Each
PHP106,485.21(exc. VAT)
Siemens SENTRON Connector Plug Socket for use with Molded-Plastic Enclosure
  • RS Stock No. 613-350
  • Mfr. Part No. 5SZ9216
Each
PHP18,563.55(exc. VAT)
Better World
Schneider Electric, Canalis KN Series
  • RS Stock No. 211-0424
  • Mfr. Part No. KNB160ZL20
Each (In a Pack of 10)
PHP306.644(exc. VAT)
Better World
Schneider Electric TeSys Thermal Circuit Breaker - GV3L 3 Pole 690V ac Voltage Rating DIN Rail Mount, 80A Current Rating
  • RS Stock No. 188-4739
  • Mfr. Part No. GV3L80
Each
PHP19,108.72(exc. VAT)
Schneider Electric Acti 9 Cover for use with ARA, IC60, iDPN Vigi, iLD, iSW, ISW-NA, RCA, Reflex iC60
  • RS Stock No. 791-2783
  • Mfr. Part No. A9A26975
Each (In a Pack of 2)
PHP864.04(exc. VAT)
Schneider Electric Interlock for use with Compact NS630b → 1600 Circuit Breaker
  • RS Stock No. 247-1875
  • Mfr. Part No. 33914
Each
PHP114,652.08(exc. VAT)
Better World
ABB, Tmax XT MCCB 3P 100A, Fixed Mount
  • RS Stock No. 236-7514
  • Mfr. Part No. 1SDA067832R1 XT2S 160 Ekip M 100A FF
Each
PHP56,724.92(exc. VAT)
Schneider Electric, ComPacT MCCB 4P 250A, Fixed Mount
  • RS Stock No. 260-7944
  • Mfr. Part No. C25N4
Each
PHP77,479.07(exc. VAT)
Schneider Electric Acti9 SE10 MCB Mini Circuit Breaker, 1P, 16A Curve C, 415V AC, 10000 A Breaking Capacity
  • RS Stock No. 339-307
  • Mfr. Part No. SE10C116
Each
PHP2,020.82(exc. VAT)
Siemens SENTRON Plug for use with Circuit Breaker 3WL10 / 3VA27
  • RS Stock No. 265-649
  • Mfr. Part No. 3VW9011-0AA53
Each
PHP10,483.46(exc. VAT)
Siemens Auxiliary Contact, 6 Contact, 2NC + 4NO, Side Mount, SENTRON
  • RS Stock No. 874-4534
  • Mfr. Part No. 3VA9988-0AA11
Each
PHP5,010.47(exc. VAT)
SENTRON Wire Connector for use with 3VA52 Series
  • RS Stock No. 263-751
  • Mfr. Part No. 3VA9234-0JC13
1 Kit
PHP12,682.79(exc. VAT)
ABB 230 V ac, 400 V ac Isolator Circuit Trip for use with Commanding Load
  • RS Stock No. 231-9593
  • Mfr. Part No. 2CDE284001R0125 E204/125r
1 Box of 1
PHP13,478.41(exc. VAT)
Better World
Siemens, 0AA0 MCCB 4P 200A, Breaking Capacity 70 kA, Fixed Mount
  • RS Stock No. 211-6042
  • Mfr. Part No. 3VA1220-6EF42-0AA0
Each
PHP81,520.59(exc. VAT)
Hager RCBO, 10A Current Rating, 1P Poles, 30mA Trip Sensitivity, Type AC
  • RS Stock No. 251-2015
  • Mfr. Part No. ADC710F
Each
PHP16,002.94(exc. VAT)
Eaton IZMX/INX Electronic Circuit Breaker 4kA , Fixed
  • RS Stock No. 132-896
  • Mfr. Part No. 183762 IZMX40B4-P40F-1
Each
PHP2,772,316.34(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 630A, Breaking Capacity 55 kA, Fixed Mount
  • RS Stock No. 270-3524
  • Mfr. Part No. 3VA1463-5EF42-0AA0
Each
PHP165,105.92(exc. VAT)
Better World
Siemens, SENTRON MCCB 4P 63A, Breaking Capacity 150 kA, Fixed Mount
  • RS Stock No. 270-3907
  • Mfr. Part No. 3VA2063-8JQ42-0AA0
Each
PHP150,077.40(exc. VAT)
ABB RCBO, 20A Current Rating, 1P Poles, Type B
  • RS Stock No. 237-5250
  • Mfr. Part No. 2CSR275151R0205
Each
PHP11,300.14(exc. VAT)
Better World
Schneider Electric Busbar Tap-Off Unit
  • RS Stock No. 219-8901
  • Mfr. Part No. KNB32CP
Each
PHP15,235.76(exc. VAT)
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