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

179 of 999+
Temporarily out of stock
Eaton xEffect FAZ MCB, 3P, 6A Curve D, 415V AC, 60V DC, 15 kA Breaking Capacity
  • RS Stock No. 241-216
  • Mfr. Part No. 102264 FAZ-D6/3-NA
Each
PHP17,081.44(exc. VAT)
Temporarily out of stock
Better World
Siemens, SENTRON MCCB Molded Case Circuit Breaker 1P 40A, Breaking Capacity 25 kA, DIN Rail Mount
  • RS Stock No. 271-9910
  • Mfr. Part No. 3VA1140-3ED12-0AA0
Each
PHP9,970.87(exc. VAT)
In Stock
ASSMANN WSW Surge Protector, 10kV, DIN Rail Mount
  • RS Stock No. 649-587
  • Mfr. Part No. DN-95421
Each
PHP2,916.10(exc. VAT)
Temporarily out of stock
ABB F200 RCCB, 125A, 4 Pole, 30mA, Type AC, 230V ac
  • RS Stock No. 225-6117
  • Mfr. Part No. 2CSF204001R1950 F204 AC-125/0,03
Each
PHP92,768.57(exc. VAT)
Temporarily out of stock
Better World
ABB, Tmax XT MCCB 3P 80A, Fixed Mount
  • RS Stock No. 236-6649
  • Mfr. Part No. 1SDA068252R1 XT3N 250 TMG 80A FF
Each
PHP45,725.07(exc. VAT)
Temporarily out of stock
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)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 250A, Fixed Mount
  • RS Stock No. 260-7885
  • Mfr. Part No. C25F3D
Each
PHP60,781.60(exc. VAT)
Temporarily out of stock
Siemens SENTRON 5SY8 MCB, 2P, 50A Curve D, 230V AC, 60V DC, 50 kA Breaking Capacity
  • RS Stock No. 610-280
  • Mfr. Part No. 5SY8550-8
Each
PHP14,454.62(exc. VAT)
Temporarily out of stock
Siemens, SENTRON MCCB Molded Case Circuit Breaker 3P 40A, Breaking Capacity 18 kA, Cable Mount, Panel Mount
  • RS Stock No. 148-378
  • Mfr. Part No. 3VA5140-5ED31-1AA0
Each
PHP26,927.98(exc. VAT)
In Stock
Better World
Schneider Electric iC60 RCD, 40A, 30mA
  • RS Stock No. 734-9201
  • Mfr. Part No. A9Q11440
Each
PHP28,318.47(exc. VAT)
Temporarily out of stock
Better World
Schneider Electric 48V ac/dc Remote Tripping Device Circuit Trip for use with LR3D Series, LRD Series
  • RS Stock No. 744-6970
  • Mfr. Part No. LAD703E
Each
PHP5,602.56(exc. VAT)
Temporarily out of stock
Eaton NZM3 Electronic Circuit Breaker 320A , 4 channels , Fixed
  • RS Stock No. 120-620
  • Mfr. Part No. 168508 NZMN3-4-A320-SVE
Each
PHP224,817.67(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT NSX Circuit breaker 2P 100A, Breaking Capacity 18 KA, Fixed Mount
  • RS Stock No. 119-650
  • Mfr. Part No. C10F2TM100
Each
PHP50,050.29(exc. VAT)
Temporarily out of stock
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)
In Stock
ABB RCBO, 16A Current Rating, 2P Poles, 30mA Trip Sensitivity, Type A, System Pro M Compact Range
  • RS Stock No. 201-6953
  • Mfr. Part No. 2CSR255180R1164 DS201 C16 A30
Each
PHP13,133.88(exc. VAT)
Temporarily out of stock
Schneider Electric, ComPacT MCCB 3P 1kA, Breaking Capacity 30 kA, Fixed Mount
  • RS Stock No. 346-740
  • Mfr. Part No. C100N32EFM
Each
PHP756,229.06(exc. VAT)
Temporarily out of stock
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)
Temporarily out of stock
Siemens, SENTRON MCCB 3P 175A, Breaking Capacity 10 kA, Fixed Mount
  • RS Stock No. 147-475
  • Mfr. Part No. 3VA5217-6EC31-2AA0
Each
PHP139,173.81(exc. VAT)
Temporarily out of stock
Siemens 125A Tag Fuse, 78.5mm, 690V
  • RS Stock No. 608-821
  • Mfr. Part No. 3NE8822-0MK
1 Pack of 3
PHP9,663.32(exc. VAT)
Temporarily out of stock
ABB PBFC 3, 3+N Phase Busbar
  • RS Stock No. 203-389
  • Mfr. Part No. 1STQ007412A0000
Each
PHP87,692.79(exc. VAT)
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