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

201 of 999+
Phoenix Contact Thermal Magnetic Circuit Breaker - TMC Single Pole 65V dc Voltage Rating DIN Rail, 1.5A Current Rating
  • RS Stock No. 135-442
  • Mfr. Part No. 0914264
1 Pack of 6
PHP46,423.92(exc. VAT)
Better World
Siemens, SENTRON MCCB 3P 63A, Breaking Capacity 36 kA, Fixed Mount
  • RS Stock No. 874-4275
  • Mfr. Part No. 3VA1163-4EF36-0AA0
Each
PHP27,756.96(exc. VAT)
Siemens Alpha Mounting Rail for use with Standard Mounting Rail
  • RS Stock No. 209-7097
  • Mfr. Part No. 8GK9910-1KK40
Each (In a Pack of 10)
PHP941.448(exc. VAT)
Eaton RCBO, 6A Current Rating, 2P Poles, 100mA Trip Sensitivity, Type A, Type D, FRBdM Range
  • RS Stock No. 121-035
  • Mfr. Part No. 168288 FRBDM-D6/1N/01-G/A
Each
PHP13,029.76(exc. VAT)
Schneider Electric R9E RCCB, 63A, 2 Pole, 30mA, Type AC, 230V
  • RS Stock No. 276-8942
  • Mfr. Part No. R9ERC263
Each
PHP10,868.15(exc. VAT)
Better World
Schneider Electric, ComPacT NSX MCCB 3P 160A, Fixed Mount
  • RS Stock No. 254-6345
  • Mfr. Part No. C16F3TM160
Each
PHP77,279.25(exc. VAT)
ABB S303 MCB, 3P, 1A Curve D, 415V AC, 125V DC, 100 kA Breaking Capacity
  • RS Stock No. 201-322
  • Mfr. Part No. 2CDS383001R0011
Each
PHP34,626.22(exc. VAT)
Better World
Schneider Electric RCBO, 40A Current Rating, 1P+N Poles, 30mA Trip Sensitivity, Type C, Acti9 Range
  • RS Stock No. 238-3334
  • Mfr. Part No. A9DV2640
Each
PHP20,211.70(exc. VAT)
Eaton, Eaton Moeller series NZM MCCB Molded Case Circuit Breaker 3P 250A, Breaking Capacity 4 kA, Plug In
  • RS Stock No. 231-157
  • Mfr. Part No. 113512 NZMC3-S250-AVE
Each
PHP179,538.39(exc. VAT)
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 4P 32A, Breaking Capacity 70 kA, DIN Rail Mount
  • RS Stock No. 271-9906
  • Mfr. Part No. 3VA1132-6GE42-0AA0
Each
PHP37,623.89(exc. VAT)
Siemens SENTRON 5SY8 MCB, 4P, 4A Curve C, 400V AC, 60V DC, 50 kA Breaking Capacity
  • RS Stock No. 610-676
  • Mfr. Part No. 5SY8604-7
Each
PHP17,829.81(exc. VAT)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 4P 400A, Breaking Capacity 5 kA, Fixed Mount
  • RS Stock No. 240-921
  • Mfr. Part No. 191487 NZMN3-4-AX400/VAR
Each
PHP195,153.62(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)
Okaya Electric Industries 3 Phase Surge Protector, 5kA, Surface Mount Mount
  • RS Stock No. 190-2019
  • Mfr. Part No. LV550DI-U4
Each
PHP3,870.86(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)
Siemens 1.25kA Tag Fuse, NH3, 690V
  • RS Stock No. 608-792
  • Mfr. Part No. 3NC3243-1U
1 Pack of 3
PHP47,105.92(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)
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)
Eaton, Eaton Moeller NZM MCCB Molded Case Circuit Breaker 3P 63A, Breaking Capacity 4 kA, Plug In
  • RS Stock No. 231-310
  • Mfr. Part No. 112750 NZMC1-S63-SVE
Each
PHP34,602.74(exc. VAT)
Schneider Electric Acti9 A9P MCB, 1P + N, 24A Curve B, 230V AC, 10 kA Breaking Capacity
  • RS Stock No. 654-243
  • Mfr. Part No. A9P44625
Each
PHP4,667.99(exc. VAT)
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